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Message-Id: <8b8e7aee9172dd5b7e45f406e3d8f56a937fe1cc.1607519069.git.christophe.leroy@csgroup.eu>
Date: Wed, 9 Dec 2020 13:04:48 +0000 (UTC)
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>
Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 3/5] powerpc: Remove support for 40x
From: Christophe Leroy <christophe.leroy@....fr>
Now that 40x platforms have gone, remove support
for 40x in the core of powerpc arch.
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
arch/powerpc/Kconfig | 8 +-
arch/powerpc/Kconfig.debug | 13 -
arch/powerpc/Makefile | 1 -
arch/powerpc/include/asm/cputable.h | 7 -
arch/powerpc/include/asm/irq.h | 2 +-
arch/powerpc/include/asm/mmu.h | 4 -
arch/powerpc/include/asm/nohash/32/mmu-40x.h | 68 --
arch/powerpc/include/asm/nohash/32/pgtable.h | 4 +-
arch/powerpc/include/asm/nohash/32/pte-40x.h | 88 ---
arch/powerpc/include/asm/nohash/mmu.h | 5 +-
arch/powerpc/include/asm/reg.h | 27 +-
arch/powerpc/include/asm/reg_booke.h | 100 +--
arch/powerpc/include/asm/time.h | 7 +-
arch/powerpc/include/asm/udbg.h | 1 -
arch/powerpc/kernel/Makefile | 1 -
arch/powerpc/kernel/asm-offsets.c | 4 +-
arch/powerpc/kernel/cputable.c | 276 -------
arch/powerpc/kernel/entry_32.S | 75 +-
arch/powerpc/kernel/head_32.h | 33 -
arch/powerpc/kernel/head_40x.S | 715 -------------------
arch/powerpc/kernel/irq.c | 2 +-
arch/powerpc/kernel/kgdb.c | 4 +-
arch/powerpc/kernel/misc_32.S | 40 --
arch/powerpc/kernel/setup.h | 2 +-
arch/powerpc/kernel/setup_32.c | 2 +-
arch/powerpc/kernel/time.c | 2 +-
arch/powerpc/kernel/traps.c | 2 +-
arch/powerpc/kernel/udbg.c | 3 -
arch/powerpc/kernel/udbg_16550.c | 23 -
arch/powerpc/mm/mmu_decl.h | 8 +-
arch/powerpc/mm/nohash/40x.c | 152 ----
arch/powerpc/mm/nohash/Makefile | 1 -
arch/powerpc/mm/nohash/tlb_low.S | 27 +-
arch/powerpc/platforms/4xx/pci.c | 100 ---
arch/powerpc/platforms/Kconfig.cputype | 9 +-
35 files changed, 29 insertions(+), 1787 deletions(-)
delete mode 100644 arch/powerpc/include/asm/nohash/32/mmu-40x.h
delete mode 100644 arch/powerpc/include/asm/nohash/32/pte-40x.h
delete mode 100644 arch/powerpc/kernel/head_40x.S
delete mode 100644 arch/powerpc/mm/nohash/40x.c
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9e679ba0811c..e97fa9020951 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -339,7 +339,7 @@ config ARCH_SUSPEND_POSSIBLE
def_bool y
depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
(PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
- || 44x || 40x
+ || 44x
config ARCH_SUSPEND_NONZERO_CPU
def_bool y
@@ -370,7 +370,7 @@ config ARCH_SUPPORTS_UPROBES
config PPC_ADV_DEBUG_REGS
bool
- depends on 40x || BOOKE
+ depends on BOOKE
default y
config PPC_ADV_DEBUG_IACS
@@ -1041,7 +1041,7 @@ config GENERIC_ISA_DMA
config PPC_INDIRECT_PCI
bool
depends on PCI
- default y if 40x || 44x
+ default y if 44x
config SBUS
bool
@@ -1066,7 +1066,7 @@ config FSL_PMC
config PPC4xx_CPM
bool
default y
- depends on SUSPEND && (44x || 40x)
+ depends on SUSPEND && 44x
help
PPC4xx Clock Power Management (CPM) support (suspend/resume).
It also enables support for two different idle states (idle-wait
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index b88900f4832f..5fe2b5667b42 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -224,14 +224,6 @@ config PPC_EARLY_DEBUG_44x
inbuilt serial port. If you enable this, ensure you set
PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
-config PPC_EARLY_DEBUG_40x
- bool "Early serial debugging for IBM/AMCC 40x CPUs"
- depends on 40x
- help
- Select this to enable early debugging for IBM 40x chips via the
- inbuilt serial port. This works on chips with a 16550 compatible
- UART.
-
config PPC_EARLY_DEBUG_CPM
bool "Early serial debugging for Freescale CPM-based serial ports"
depends on SERIAL_CPM
@@ -332,11 +324,6 @@ config PPC_EARLY_DEBUG_44x_PHYSHIGH
depends on PPC_EARLY_DEBUG_44x
default "0x1"
-config PPC_EARLY_DEBUG_40x_PHYSADDR
- hex "Early debug UART physical address"
- depends on PPC_EARLY_DEBUG_40x
- default "0xef600300"
-
config PPC_EARLY_DEBUG_CPM_ADDR
hex "CPM UART early debug transmit descriptor address"
depends on PPC_EARLY_DEBUG_CPM
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index fde3dbe57bda..c799a88b867c 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -265,7 +265,6 @@ KBUILD_CFLAGS += $(cflags-y)
head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
head-$(CONFIG_PPC_BOOK3S_32) := arch/powerpc/kernel/head_book3s_32.o
head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
-head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 8a4e1ed8a4a2..3ec018370d96 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -375,7 +375,6 @@ static inline void cpu_feature_keys_init(void) { }
CPU_FTR_COMMON | CPU_FTR_FPU_UNAVAILABLE | CPU_FTR_NOEXECUTE)
#define CPU_FTRS_CLASSIC32 (CPU_FTR_COMMON)
#define CPU_FTRS_8XX (CPU_FTR_NOEXECUTE)
-#define CPU_FTRS_40X (CPU_FTR_NOEXECUTE)
#define CPU_FTRS_44X (CPU_FTR_NOEXECUTE)
#define CPU_FTRS_440x6 (CPU_FTR_NOEXECUTE | \
CPU_FTR_INDEXED_DCR)
@@ -516,9 +515,6 @@ enum {
#ifdef CONFIG_PPC_8xx
CPU_FTRS_8XX |
#endif
-#ifdef CONFIG_40x
- CPU_FTRS_40X |
-#endif
#ifdef CONFIG_PPC_47x
CPU_FTRS_47X | CPU_FTR_476_DD2 |
#elif defined(CONFIG_44x)
@@ -585,9 +581,6 @@ enum {
#ifdef CONFIG_PPC_8xx
CPU_FTRS_8XX &
#endif
-#ifdef CONFIG_40x
- CPU_FTRS_40X &
-#endif
#ifdef CONFIG_PPC_47x
CPU_FTRS_47X &
#elif defined(CONFIG_44x)
diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h
index 4f983ca4030a..4e6434c7d8d1 100644
--- a/arch/powerpc/include/asm/irq.h
+++ b/arch/powerpc/include/asm/irq.h
@@ -39,7 +39,7 @@ struct pt_regs;
#define __ARCH_HAS_DO_SOFTIRQ
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
/*
* Per-cpu stacks for handling critical, debug and machine check
* level interrupts.
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 620e8fe6f8fd..c43d79de9ccf 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -16,7 +16,6 @@
*/
#define MMU_FTR_HPTE_TABLE ASM_CONST(0x00000001)
#define MMU_FTR_TYPE_8xx ASM_CONST(0x00000002)
-#define MMU_FTR_TYPE_40x ASM_CONST(0x00000004)
#define MMU_FTR_TYPE_44x ASM_CONST(0x00000008)
#define MMU_FTR_TYPE_FSL_E ASM_CONST(0x00000010)
#define MMU_FTR_TYPE_47x ASM_CONST(0x00000020)
@@ -163,9 +162,6 @@ enum {
#ifdef CONFIG_PPC_8xx
MMU_FTR_TYPE_8xx |
#endif
-#ifdef CONFIG_40x
- MMU_FTR_TYPE_40x |
-#endif
#ifdef CONFIG_PPC_47x
MMU_FTR_TYPE_47x | MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL |
#elif defined(CONFIG_44x)
diff --git a/arch/powerpc/include/asm/nohash/32/mmu-40x.h b/arch/powerpc/include/asm/nohash/32/mmu-40x.h
deleted file mode 100644
index 8a8f13a22cf4..000000000000
--- a/arch/powerpc/include/asm/nohash/32/mmu-40x.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_POWERPC_MMU_40X_H_
-#define _ASM_POWERPC_MMU_40X_H_
-
-/*
- * PPC40x support
- */
-
-#define PPC40X_TLB_SIZE 64
-
-/*
- * TLB entries are defined by a "high" tag portion and a "low" data
- * portion. On all architectures, the data portion is 32-bits.
- *
- * TLB entries are managed entirely under software control by reading,
- * writing, and searchoing using the 4xx-specific tlbre, tlbwr, and tlbsx
- * instructions.
- */
-
-#define TLB_LO 1
-#define TLB_HI 0
-
-#define TLB_DATA TLB_LO
-#define TLB_TAG TLB_HI
-
-/* Tag portion */
-
-#define TLB_EPN_MASK 0xFFFFFC00 /* Effective Page Number */
-#define TLB_PAGESZ_MASK 0x00000380
-#define TLB_PAGESZ(x) (((x) & 0x7) << 7)
-#define PAGESZ_1K 0
-#define PAGESZ_4K 1
-#define PAGESZ_16K 2
-#define PAGESZ_64K 3
-#define PAGESZ_256K 4
-#define PAGESZ_1M 5
-#define PAGESZ_4M 6
-#define PAGESZ_16M 7
-#define TLB_VALID 0x00000040 /* Entry is valid */
-
-/* Data portion */
-
-#define TLB_RPN_MASK 0xFFFFFC00 /* Real Page Number */
-#define TLB_PERM_MASK 0x00000300
-#define TLB_EX 0x00000200 /* Instruction execution allowed */
-#define TLB_WR 0x00000100 /* Writes permitted */
-#define TLB_ZSEL_MASK 0x000000F0
-#define TLB_ZSEL(x) (((x) & 0xF) << 4)
-#define TLB_ATTR_MASK 0x0000000F
-#define TLB_W 0x00000008 /* Caching is write-through */
-#define TLB_I 0x00000004 /* Caching is inhibited */
-#define TLB_M 0x00000002 /* Memory is coherent */
-#define TLB_G 0x00000001 /* Memory is guarded from prefetch */
-
-#ifndef __ASSEMBLY__
-
-typedef struct {
- unsigned int id;
- unsigned int active;
- void __user *vdso;
-} mm_context_t;
-
-#endif /* !__ASSEMBLY__ */
-
-#define mmu_virtual_psize MMU_PAGE_4K
-#define mmu_linear_psize MMU_PAGE_256M
-
-#endif /* _ASM_POWERPC_MMU_40X_H_ */
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 96522f7f0618..ed716aa0ba9d 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -126,9 +126,7 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot);
* (hardware-defined) PowerPC PTE as closely as possible.
*/
-#if defined(CONFIG_40x)
-#include <asm/nohash/32/pte-40x.h>
-#elif defined(CONFIG_44x)
+#if defined(CONFIG_44x)
#include <asm/nohash/32/pte-44x.h>
#elif defined(CONFIG_FSL_BOOKE) && defined(CONFIG_PTE_64BIT)
#include <asm/nohash/pte-book3e.h>
diff --git a/arch/powerpc/include/asm/nohash/32/pte-40x.h b/arch/powerpc/include/asm/nohash/32/pte-40x.h
deleted file mode 100644
index 2d3153cfc0d7..000000000000
--- a/arch/powerpc/include/asm/nohash/32/pte-40x.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_POWERPC_NOHASH_32_PTE_40x_H
-#define _ASM_POWERPC_NOHASH_32_PTE_40x_H
-#ifdef __KERNEL__
-
-/*
- * At present, all PowerPC 400-class processors share a similar TLB
- * architecture. The instruction and data sides share a unified,
- * 64-entry, fully-associative TLB which is maintained totally under
- * software control. In addition, the instruction side has a
- * hardware-managed, 4-entry, fully-associative TLB which serves as a
- * first level to the shared TLB. These two TLBs are known as the UTLB
- * and ITLB, respectively (see "mmu.h" for definitions).
- *
- * There are several potential gotchas here. The 40x hardware TLBLO
- * field looks like this:
- *
- * 0 1 2 3 4 ... 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- * RPN..................... 0 0 EX WR ZSEL....... W I M G
- *
- * Where possible we make the Linux PTE bits match up with this
- *
- * - bits 20 and 21 must be cleared, because we use 4k pages (40x can
- * support down to 1k pages), this is done in the TLBMiss exception
- * handler.
- * - We use only zones 0 (for kernel pages) and 1 (for user pages)
- * of the 16 available. Bit 24-26 of the TLB are cleared in the TLB
- * miss handler. Bit 27 is PAGE_USER, thus selecting the correct
- * zone.
- * - PRESENT *must* be in the bottom two bits because swap cache
- * entries use the top 30 bits. Because 40x doesn't support SMP
- * anyway, M is irrelevant so we borrow it for PAGE_PRESENT. Bit 30
- * is cleared in the TLB miss handler before the TLB entry is loaded.
- * - All other bits of the PTE are loaded into TLBLO without
- * modification, leaving us only the bits 20, 21, 24, 25, 26, 30 for
- * software PTE bits. We actually use bits 21, 24, 25, and
- * 30 respectively for the software bits: ACCESSED, DIRTY, RW, and
- * PRESENT.
- */
-
-#define _PAGE_GUARDED 0x001 /* G: page is guarded from prefetch */
-#define _PAGE_PRESENT 0x002 /* software: PTE contains a translation */
-#define _PAGE_NO_CACHE 0x004 /* I: caching is inhibited */
-#define _PAGE_WRITETHRU 0x008 /* W: caching is write-through */
-#define _PAGE_USER 0x010 /* matches one of the zone permission bits */
-#define _PAGE_SPECIAL 0x020 /* software: Special page */
-#define _PAGE_DIRTY 0x080 /* software: dirty page */
-#define _PAGE_RW 0x100 /* hardware: WR, anded with dirty in exception */
-#define _PAGE_EXEC 0x200 /* hardware: EX permission */
-#define _PAGE_ACCESSED 0x400 /* software: R: page referenced */
-
-/* No page size encoding in the linux PTE */
-#define _PAGE_PSIZE 0
-
-/* cache related flags non existing on 40x */
-#define _PAGE_COHERENT 0
-
-#define _PAGE_KERNEL_RO 0
-#define _PAGE_KERNEL_ROX _PAGE_EXEC
-#define _PAGE_KERNEL_RW (_PAGE_DIRTY | _PAGE_RW)
-#define _PAGE_KERNEL_RWX (_PAGE_DIRTY | _PAGE_RW | _PAGE_EXEC)
-
-#define _PMD_PRESENT 0x400 /* PMD points to page of PTEs */
-#define _PMD_PRESENT_MASK _PMD_PRESENT
-#define _PMD_BAD 0x802
-#define _PMD_SIZE_4M 0x0c0
-#define _PMD_SIZE_16M 0x0e0
-#define _PMD_USER 0
-
-#define _PTE_NONE_MASK 0
-
-/* Until my rework is finished, 40x still needs atomic PTE updates */
-#define PTE_ATOMIC_UPDATES 1
-
-#define _PAGE_BASE_NC (_PAGE_PRESENT | _PAGE_ACCESSED)
-#define _PAGE_BASE (_PAGE_BASE_NC)
-
-/* Permission masks used to generate the __P and __S table */
-#define PAGE_NONE __pgprot(_PAGE_BASE)
-#define PAGE_SHARED __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW)
-#define PAGE_SHARED_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW | _PAGE_EXEC)
-#define PAGE_COPY __pgprot(_PAGE_BASE | _PAGE_USER)
-#define PAGE_COPY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
-#define PAGE_READONLY __pgprot(_PAGE_BASE | _PAGE_USER)
-#define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_NOHASH_32_PTE_40x_H */
diff --git a/arch/powerpc/include/asm/nohash/mmu.h b/arch/powerpc/include/asm/nohash/mmu.h
index edc793e5f08f..8b1d252cd6a9 100644
--- a/arch/powerpc/include/asm/nohash/mmu.h
+++ b/arch/powerpc/include/asm/nohash/mmu.h
@@ -2,10 +2,7 @@
#ifndef _ASM_POWERPC_NOHASH_MMU_H_
#define _ASM_POWERPC_NOHASH_MMU_H_
-#if defined(CONFIG_40x)
-/* 40x-style software loaded TLB */
-#include <asm/nohash/32/mmu-40x.h>
-#elif defined(CONFIG_44x)
+#if defined(CONFIG_44x)
/* 44x-style software loaded TLB */
#include <asm/nohash/32/mmu-44x.h>
#elif defined(CONFIG_PPC_BOOK3E_MMU)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index b9492f2b0608..d2a0b29db3ea 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -18,9 +18,9 @@
#include <asm/feature-fixups.h>
/* Pickup Book E specific registers. */
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
#include <asm/reg_booke.h>
-#endif /* CONFIG_BOOKE || CONFIG_40x */
+#endif
#ifdef CONFIG_FSL_EMB_PERFMON
#include <asm/reg_fsl_emb.h>
@@ -236,14 +236,10 @@
/* Special Purpose Registers (SPRNs)*/
-#ifdef CONFIG_40x
-#define SPRN_PID 0x3B1 /* Process ID */
-#else
#define SPRN_PID 0x030 /* Process ID */
#ifdef CONFIG_BOOKE
#define SPRN_PID0 SPRN_PID/* Process ID Register 0 */
#endif
-#endif
#define SPRN_CTR 0x009 /* Count Register */
#define SPRN_DSCR 0x11
@@ -1108,15 +1104,6 @@
* - SPRG2 indicator that we are in RTAS
* - SPRG4 (603 only) pseudo TLB LRU data
*
- * 32-bit 40x:
- * - SPRG0 scratch for exception vectors
- * - SPRG1 scratch for exception vectors
- * - SPRG2 scratch for exception vectors
- * - SPRG4 scratch for exception vectors (not 403)
- * - SPRG5 scratch for exception vectors (not 403)
- * - SPRG6 scratch for exception vectors (not 403)
- * - SPRG7 scratch for exception vectors (not 403)
- *
* 32-bit 440 and FSL BookE:
* - SPRG0 scratch for exception vectors
* - SPRG1 scratch for exception vectors (*)
@@ -1208,16 +1195,6 @@
#define SPRN_SPRG_603_LRU SPRN_SPRG4
#endif
-#ifdef CONFIG_40x
-#define SPRN_SPRG_SCRATCH0 SPRN_SPRG0
-#define SPRN_SPRG_SCRATCH1 SPRN_SPRG1
-#define SPRN_SPRG_SCRATCH2 SPRN_SPRG2
-#define SPRN_SPRG_SCRATCH3 SPRN_SPRG4
-#define SPRN_SPRG_SCRATCH4 SPRN_SPRG5
-#define SPRN_SPRG_SCRATCH5 SPRN_SPRG6
-#define SPRN_SPRG_SCRATCH6 SPRN_SPRG7
-#endif
-
#ifdef CONFIG_BOOKE
#define SPRN_SPRG_RSCRATCH0 SPRN_SPRG0
#define SPRN_SPRG_WSCRATCH0 SPRN_SPRG0
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h
index 262782f08fd4..533d8a0caddf 100644
--- a/arch/powerpc/include/asm/reg_booke.h
+++ b/arch/powerpc/include/asm/reg_booke.h
@@ -42,9 +42,6 @@
#define MSR_KERNEL (MSR_ | MSR_64BIT)
#define MSR_USER32 (MSR_ | MSR_PR | MSR_EE)
#define MSR_USER64 (MSR_USER32 | MSR_64BIT)
-#elif defined (CONFIG_40x)
-#define MSR_KERNEL (MSR_ME|MSR_RI|MSR_IR|MSR_DR|MSR_CE)
-#define MSR_USER (MSR_KERNEL|MSR_PR|MSR_EE)
#else
#define MSR_KERNEL (MSR_ME|MSR_RI|MSR_CE)
#define MSR_USER (MSR_KERNEL|MSR_PR|MSR_EE)
@@ -157,7 +154,6 @@
#define SPRN_TLB3CFG 0x2B3 /* TLB 3 Config Register */
#define SPRN_EPR 0x2BE /* External Proxy Register */
#define SPRN_CCR1 0x378 /* Core Configuration Register 1 */
-#define SPRN_ZPR 0x3B0 /* Zone Protection Register (40x) */
#define SPRN_MAS7 0x3B0 /* MMU Assist Register 7 */
#define SPRN_MMUCR 0x3B2 /* MMU Control Register */
#define SPRN_CCR0 0x3B3 /* Core Configuration Register 0 */
@@ -166,7 +162,6 @@
#define SPRN_SGR 0x3B9 /* Storage Guarded Register */
#define SPRN_DCWR 0x3BA /* Data Cache Write-thru Register */
#define SPRN_SLER 0x3BB /* Little-endian real mode */
-#define SPRN_SU0R 0x3BC /* "User 0" real mode (40x) */
#define SPRN_DCMP 0x3D1 /* Data TLB Compare Register */
#define SPRN_ICDBDR 0x3D3 /* Instruction Cache Debug Data Register */
#define SPRN_EVPR 0x3D6 /* Exception Vector Prefix Register */
@@ -202,21 +197,6 @@
#define SPRN_TSR 0x150 /* Timer Status Register */
#define SPRN_TCR 0x154 /* Timer Control Register */
#endif /* Book E */
-#ifdef CONFIG_40x
-#define SPRN_DBCR1 0x3BD /* Debug Control Register 1 */
-#define SPRN_ESR 0x3D4 /* Exception Syndrome Register */
-#define SPRN_DEAR 0x3D5 /* Data Error Address Register */
-#define SPRN_TSR 0x3D8 /* Timer Status Register */
-#define SPRN_TCR 0x3DA /* Timer Control Register */
-#define SPRN_SRR2 0x3DE /* Save/Restore Register 2 */
-#define SPRN_SRR3 0x3DF /* Save/Restore Register 3 */
-#define SPRN_DBSR 0x3F0 /* Debug Status Register */
-#define SPRN_DBCR0 0x3F2 /* Debug Control Register 0 */
-#define SPRN_DAC1 0x3F6 /* Data Address Compare 1 */
-#define SPRN_DAC2 0x3F7 /* Data Address Compare 2 */
-#define SPRN_CSRR0 SPRN_SRR2 /* Critical Save and Restore Register 0 */
-#define SPRN_CSRR1 SPRN_SRR3 /* Critical Save and Restore Register 1 */
-#endif
#define SPRN_HACOP 0x15F /* Hypervisor Available Coprocessor Register */
/* Bit definitions for CCR1. */
@@ -320,20 +300,6 @@
#define DBSR_IAC12ATS 0x00000002 /* Instr Address Compare 1/2 Toggle */
#define DBSR_IAC34ATS 0x00000001 /* Instr Address Compare 3/4 Toggle */
#endif
-#ifdef CONFIG_40x
-#define DBSR_IC 0x80000000 /* Instruction Completion */
-#define DBSR_BT 0x40000000 /* Branch taken */
-#define DBSR_IRPT 0x20000000 /* Exception Debug Event */
-#define DBSR_TIE 0x10000000 /* Trap Instruction debug Event */
-#define DBSR_IAC1 0x04000000 /* Instruction Address Compare 1 Event */
-#define DBSR_IAC2 0x02000000 /* Instruction Address Compare 2 Event */
-#define DBSR_IAC3 0x00080000 /* Instruction Address Compare 3 Event */
-#define DBSR_IAC4 0x00040000 /* Instruction Address Compare 4 Event */
-#define DBSR_DAC1R 0x01000000 /* Data Address Compare 1 Read Event */
-#define DBSR_DAC1W 0x00800000 /* Data Address Compare 1 Write Event */
-#define DBSR_DAC2R 0x00400000 /* Data Address Compare 2 Read Event */
-#define DBSR_DAC2W 0x00200000 /* Data Address Compare 2 Write Event */
-#endif
/* Bit definitions related to the ESR. */
#define ESR_MCI 0x80000000 /* Machine Check - Instruction */
@@ -355,69 +321,7 @@
#define ESR_SPV 0x00000080 /* Signal Processing operation */
/* Bit definitions related to the DBCR0. */
-#if defined(CONFIG_40x)
-#define DBCR0_EDM 0x80000000 /* External Debug Mode */
-#define DBCR0_IDM 0x40000000 /* Internal Debug Mode */
-#define DBCR0_RST 0x30000000 /* all the bits in the RST field */
-#define DBCR0_RST_SYSTEM 0x30000000 /* System Reset */
-#define DBCR0_RST_CHIP 0x20000000 /* Chip Reset */
-#define DBCR0_RST_CORE 0x10000000 /* Core Reset */
-#define DBCR0_RST_NONE 0x00000000 /* No Reset */
-#define DBCR0_IC 0x08000000 /* Instruction Completion */
-#define DBCR0_ICMP DBCR0_IC
-#define DBCR0_BT 0x04000000 /* Branch Taken */
-#define DBCR0_BRT DBCR0_BT
-#define DBCR0_EDE 0x02000000 /* Exception Debug Event */
-#define DBCR0_IRPT DBCR0_EDE
-#define DBCR0_TDE 0x01000000 /* TRAP Debug Event */
-#define DBCR0_IA1 0x00800000 /* Instr Addr compare 1 enable */
-#define DBCR0_IAC1 DBCR0_IA1
-#define DBCR0_IA2 0x00400000 /* Instr Addr compare 2 enable */
-#define DBCR0_IAC2 DBCR0_IA2
-#define DBCR0_IA12 0x00200000 /* Instr Addr 1-2 range enable */
-#define DBCR0_IA12X 0x00100000 /* Instr Addr 1-2 range eXclusive */
-#define DBCR0_IA3 0x00080000 /* Instr Addr compare 3 enable */
-#define DBCR0_IAC3 DBCR0_IA3
-#define DBCR0_IA4 0x00040000 /* Instr Addr compare 4 enable */
-#define DBCR0_IAC4 DBCR0_IA4
-#define DBCR0_IA34 0x00020000 /* Instr Addr 3-4 range Enable */
-#define DBCR0_IA34X 0x00010000 /* Instr Addr 3-4 range eXclusive */
-#define DBCR0_IA12T 0x00008000 /* Instr Addr 1-2 range Toggle */
-#define DBCR0_IA34T 0x00004000 /* Instr Addr 3-4 range Toggle */
-#define DBCR0_FT 0x00000001 /* Freeze Timers on debug event */
-
-#define dbcr_iac_range(task) ((task)->thread.debug.dbcr0)
-#define DBCR_IAC12I DBCR0_IA12 /* Range Inclusive */
-#define DBCR_IAC12X (DBCR0_IA12 | DBCR0_IA12X) /* Range Exclusive */
-#define DBCR_IAC12MODE (DBCR0_IA12 | DBCR0_IA12X) /* IAC 1-2 Mode Bits */
-#define DBCR_IAC34I DBCR0_IA34 /* Range Inclusive */
-#define DBCR_IAC34X (DBCR0_IA34 | DBCR0_IA34X) /* Range Exclusive */
-#define DBCR_IAC34MODE (DBCR0_IA34 | DBCR0_IA34X) /* IAC 3-4 Mode Bits */
-
-/* Bit definitions related to the DBCR1. */
-#define DBCR1_DAC1R 0x80000000 /* DAC1 Read Debug Event */
-#define DBCR1_DAC2R 0x40000000 /* DAC2 Read Debug Event */
-#define DBCR1_DAC1W 0x20000000 /* DAC1 Write Debug Event */
-#define DBCR1_DAC2W 0x10000000 /* DAC2 Write Debug Event */
-
-#define dbcr_dac(task) ((task)->thread.debug.dbcr1)
-#define DBCR_DAC1R DBCR1_DAC1R
-#define DBCR_DAC1W DBCR1_DAC1W
-#define DBCR_DAC2R DBCR1_DAC2R
-#define DBCR_DAC2W DBCR1_DAC2W
-
-/*
- * Are there any active Debug Events represented in the
- * Debug Control Registers?
- */
-#define DBCR0_ACTIVE_EVENTS (DBCR0_ICMP | DBCR0_IAC1 | DBCR0_IAC2 | \
- DBCR0_IAC3 | DBCR0_IAC4)
-#define DBCR1_ACTIVE_EVENTS (DBCR1_DAC1R | DBCR1_DAC2R | \
- DBCR1_DAC1W | DBCR1_DAC2W)
-#define DBCR_ACTIVE_EVENTS(dbcr0, dbcr1) (((dbcr0) & DBCR0_ACTIVE_EVENTS) || \
- ((dbcr1) & DBCR1_ACTIVE_EVENTS))
-
-#elif defined(CONFIG_BOOKE)
+#ifdef CONFIG_BOOKE
#define DBCR0_EDM 0x80000000 /* External Debug Mode */
#define DBCR0_IDM 0x40000000 /* Internal Debug Mode */
#define DBCR0_RST 0x30000000 /* all the bits in the RST field */
@@ -518,7 +422,7 @@
#define DBCR_ACTIVE_EVENTS(dbcr0, dbcr1) (((dbcr0) & DBCR0_ACTIVE_EVENTS) || \
((dbcr1) & DBCR1_ACTIVE_EVENTS))
-#endif /* #elif defined(CONFIG_BOOKE) */
+#endif /* CONFIG_BOOKE */
/* Bit definitions related to the TCR. */
#define TCR_WP(x) (((x)&0x3)<<30) /* WDT Period */
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 8f789b597bae..8f9f3357b298 100644
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -55,9 +55,6 @@ static inline u64 get_vtb(void)
*/
static inline u64 get_dec(void)
{
- if (IS_ENABLED(CONFIG_40x))
- return mfspr(SPRN_PIT);
-
return mfspr(SPRN_DEC);
}
@@ -68,9 +65,7 @@ static inline u64 get_dec(void)
*/
static inline void set_dec(u64 val)
{
- if (IS_ENABLED(CONFIG_40x))
- mtspr(SPRN_PIT, (u32)val);
- else if (IS_ENABLED(CONFIG_BOOKE))
+ if (IS_ENABLED(CONFIG_BOOKE))
mtspr(SPRN_DEC, val);
else
mtspr(SPRN_DEC, val - 1);
diff --git a/arch/powerpc/include/asm/udbg.h b/arch/powerpc/include/asm/udbg.h
index 0ea9e70ed78b..e07687fb3b96 100644
--- a/arch/powerpc/include/asm/udbg.h
+++ b/arch/powerpc/include/asm/udbg.h
@@ -45,7 +45,6 @@ extern void __init udbg_init_rtas_console(void);
extern void __init udbg_init_debug_beat(void);
extern void __init udbg_init_btext(void);
extern void __init udbg_init_44x_as1(void);
-extern void __init udbg_init_40x_realmode(void);
extern void __init udbg_init_cpm(void);
extern void __init udbg_init_usbgecko(void);
extern void __init udbg_init_memcons(void);
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fe2ef598e2ea..e67a95d8298d 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -97,7 +97,6 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o
extra-$(CONFIG_PPC64) := head_64.o
extra-$(CONFIG_PPC_BOOK3S_32) := head_book3s_32.o
-extra-$(CONFIG_40x) := head_40x.o
extra-$(CONFIG_44x) := head_44x.o
extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
extra-$(CONFIG_PPC_8xx) := head_8xx.o
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index b12d7c049bfe..e5caefb72a69 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -56,7 +56,7 @@
#endif
#ifdef CONFIG_PPC32
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
#include "head_booke.h"
#endif
#endif
@@ -366,7 +366,7 @@ int main(void)
#if defined(CONFIG_PPC32)
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
DEFINE(EXC_LVL_SIZE, STACK_EXC_LVL_FRAME_SIZE);
DEFINE(MAS0, STACK_INT_FRAME_SIZE+offsetof(struct exception_regs, mas0));
/* we overload MMUCR for 44x on MAS0 since they are mutually exclusive */
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index f2fcd29aab23..551a99d27936 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1258,282 +1258,6 @@ static struct cpu_spec __initdata cpu_specs[] = {
.platform = "ppc823",
},
#endif /* CONFIG_PPC_8xx */
-#ifdef CONFIG_40x
- { /* STB 04xxx */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x41810000,
- .cpu_name = "STB04xxx",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* NP405L */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x41610000,
- .cpu_name = "NP405L",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* NP4GS3 */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x40B10000,
- .cpu_name = "NP4GS3",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* NP405H */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x41410000,
- .cpu_name = "NP405H",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405GPr */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x50910000,
- .cpu_name = "405GPr",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* STBx25xx */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x51510000,
- .cpu_name = "STBx25xx",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405LP */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x41F10000,
- .cpu_name = "405LP",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EP */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x51210000,
- .cpu_name = "405EP",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EX Rev. A/B with Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910007,
- .cpu_name = "405EX Rev. A/B",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EX Rev. C without Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x1291000d,
- .cpu_name = "405EX Rev. C",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EX Rev. C with Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x1291000f,
- .cpu_name = "405EX Rev. C",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EX Rev. D without Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910003,
- .cpu_name = "405EX Rev. D",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EX Rev. D with Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910005,
- .cpu_name = "405EX Rev. D",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EXr Rev. A/B without Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910001,
- .cpu_name = "405EXr Rev. A/B",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EXr Rev. C without Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910009,
- .cpu_name = "405EXr Rev. C",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EXr Rev. C with Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x1291000b,
- .cpu_name = "405EXr Rev. C",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EXr Rev. D without Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910000,
- .cpu_name = "405EXr Rev. D",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* 405EXr Rev. D with Security */
- .pvr_mask = 0xffff000f,
- .pvr_value = 0x12910002,
- .cpu_name = "405EXr Rev. D",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- {
- /* 405EZ */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x41510000,
- .cpu_name = "405EZ",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* APM8018X */
- .pvr_mask = 0xffff0000,
- .pvr_value = 0x7ff11432,
- .cpu_name = "APM8018X",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- },
- { /* default match */
- .pvr_mask = 0x00000000,
- .pvr_value = 0x00000000,
- .cpu_name = "(generic 40x PPC)",
- .cpu_features = CPU_FTRS_40X,
- .cpu_user_features = PPC_FEATURE_32 |
- PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
- .mmu_features = MMU_FTR_TYPE_40x,
- .icache_bsize = 32,
- .dcache_bsize = 32,
- .machine_check = machine_check_4xx,
- .platform = "ppc405",
- }
-
-#endif /* CONFIG_40x */
#ifdef CONFIG_44x
#ifndef CONFIG_PPC_47x
{
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 58177c71dfd4..c203cc4a81c8 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -104,28 +104,6 @@ crit_transfer_to_handler:
_ASM_NOKPROBE_SYMBOL(crit_transfer_to_handler)
#endif
-#ifdef CONFIG_40x
- .globl crit_transfer_to_handler
-crit_transfer_to_handler:
- lwz r0,crit_r10@l(0)
- stw r0,GPR10(r11)
- lwz r0,crit_r11@l(0)
- stw r0,GPR11(r11)
- mfspr r0,SPRN_SRR0
- stw r0,crit_srr0@l(0)
- mfspr r0,SPRN_SRR1
- stw r0,crit_srr1@l(0)
-
- /* set the stack limit to the current stack */
- mfspr r8,SPRN_SPRG_THREAD
- lwz r0,KSP_LIMIT(r8)
- stw r0,saved_ksp_limit@l(0)
- rlwinm r0,r1,0,0,(31 - THREAD_SHIFT)
- stw r0,KSP_LIMIT(r8)
- /* fall through */
-_ASM_NOKPROBE_SYMBOL(crit_transfer_to_handler)
-#endif
-
/*
* This code finishes saving the registers to the exception frame
* and jumps to the appropriate handler for the exception, turning
@@ -155,7 +133,7 @@ transfer_to_handler:
addi r2, r12, -THREAD
addi r11,r1,STACK_FRAME_OVERHEAD
stw r11,PT_REGS(r12)
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_BOOKE
/* Check to see if the dbcr0 register is set up to debug. Use the
internal debug mode bit to do this. */
lwz r12,THREAD_DBCR0(r12)
@@ -165,7 +143,7 @@ transfer_to_handler:
#ifdef CONFIG_PPC_BOOK3S_32
kuep_lock r11, r12
#endif
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_BOOKE
beq+ 3f
/* From user and task is ptraced - load up global dbcr0 */
li r12,-1 /* clear all pending debug events */
@@ -235,9 +213,6 @@ transfer_to_handler_cont:
mtspr SPRN_SRR1,r10
mtlr r9
rfi /* jump to handler, enable MMU */
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
#if defined (CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500)
4: rlwinm r12,r12,0,~_TLF_NAPPING
@@ -267,9 +242,6 @@ _ASM_NOKPROBE_SYMBOL(transfer_to_handler_cont)
mtspr SPRN_SRR0,r12
mtspr SPRN_SRR1,r0
rfi
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
reenable_mmu:
/*
@@ -328,9 +300,6 @@ stack_ovf:
mtspr SPRN_SRR0,r9
mtspr SPRN_SRR1,r10
rfi
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
_ASM_NOKPROBE_SYMBOL(stack_ovf)
#endif
@@ -478,9 +447,6 @@ syscall_exit_finish:
mtspr SPRN_SRR0,r7
mtspr SPRN_SRR1,r8
rfi
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
_ASM_NOKPROBE_SYMBOL(syscall_exit_finish)
#ifdef CONFIG_44x
2: li r7,0
@@ -611,9 +577,6 @@ ret_from_kernel_syscall:
mtspr SPRN_SRR0, r9
mtspr SPRN_SRR1, r10
rfi
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
_ASM_NOKPROBE_SYMBOL(ret_from_kernel_syscall)
/*
@@ -817,9 +780,6 @@ fast_exception_return:
REST_GPR(12, r11)
lwz r11,GPR11(r11)
rfi
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
_ASM_NOKPROBE_SYMBOL(fast_exception_return)
#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
@@ -1087,18 +1047,6 @@ _ASM_NOKPROBE_SYMBOL(exc_exit_restart)
* time of the critical interrupt.
*
*/
-#ifdef CONFIG_40x
-#define PPC_40x_TURN_OFF_MSR_DR \
- /* avoid any possible TLB misses here by turning off MSR.DR, we \
- * assume the instructions here are mapped by a pinned TLB entry */ \
- li r10,MSR_IR; \
- mtmsr r10; \
- isync; \
- tophys(r1, r1);
-#else
-#define PPC_40x_TURN_OFF_MSR_DR
-#endif
-
#define RET_FROM_EXC_LEVEL(exc_lvl_srr0, exc_lvl_srr1, exc_lvl_rfi) \
REST_NVGPRS(r1); \
lwz r3,_MSR(r1); \
@@ -1118,7 +1066,6 @@ _ASM_NOKPROBE_SYMBOL(exc_exit_restart)
mtlr r11; \
lwz r10,_CCR(r1); \
mtcrf 0xff,r10; \
- PPC_40x_TURN_OFF_MSR_DR; \
lwz r9,_DEAR(r1); \
lwz r10,_ESR(r1); \
mtspr SPRN_DEAR,r9; \
@@ -1169,24 +1116,6 @@ _ASM_NOKPROBE_SYMBOL(exc_exit_restart)
#define RESTORE_MMU_REGS
#endif
-#ifdef CONFIG_40x
- .globl ret_from_crit_exc
-ret_from_crit_exc:
- mfspr r9,SPRN_SPRG_THREAD
- lis r10,saved_ksp_limit@ha;
- lwz r10,saved_ksp_limit@l(r10);
- tovirt(r9,r9);
- stw r10,KSP_LIMIT(r9)
- lis r9,crit_srr0@ha;
- lwz r9,crit_srr0@l(r9);
- lis r10,crit_srr1@ha;
- lwz r10,crit_srr1@l(r10);
- mtspr SPRN_SRR0,r9;
- mtspr SPRN_SRR1,r10;
- RET_FROM_EXC_LEVEL(SPRN_CSRR0, SPRN_CSRR1, PPC_RFCI)
-_ASM_NOKPROBE_SYMBOL(ret_from_crit_exc)
-#endif /* CONFIG_40x */
-
#ifdef CONFIG_BOOKE
.globl ret_from_crit_exc
ret_from_crit_exc:
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h
index 541664d95702..0ca6a13261b9 100644
--- a/arch/powerpc/kernel/head_32.h
+++ b/arch/powerpc/kernel/head_32.h
@@ -97,16 +97,12 @@
mfspr r12,SPRN_SRR0
mfspr r9,SPRN_SRR1
#endif
-#ifdef CONFIG_40x
- rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */
-#else
#ifdef CONFIG_VMAP_STACK
li r10, MSR_KERNEL & ~MSR_IR /* can take exceptions */
#else
li r10,MSR_KERNEL & ~(MSR_IR|MSR_DR) /* can take exceptions */
#endif
mtmsr r10 /* (except for mach check in rtas) */
-#endif
stw r0,GPR0(r11)
lis r10,STACK_FRAME_REGS_MARKER@ha /* exception frame marker */
addi r10,r10,STACK_FRAME_REGS_MARKER@l
@@ -147,16 +143,12 @@
mfcr r10
rlwinm r10,r10,0,4,2 /* Clear SO bit in CR */
stw r10,_CCR(r11) /* save registers */
-#ifdef CONFIG_40x
- rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */
-#else
#ifdef CONFIG_VMAP_STACK
LOAD_REG_IMMEDIATE(r10, MSR_KERNEL & ~MSR_IR) /* can take exceptions */
#else
LOAD_REG_IMMEDIATE(r10, MSR_KERNEL & ~(MSR_IR|MSR_DR)) /* can take exceptions */
#endif
mtmsr r10 /* (except for mach check in rtas) */
-#endif
lis r10,STACK_FRAME_REGS_MARKER@ha /* exception frame marker */
stw r2,GPR2(r11)
addi r10,r10,STACK_FRAME_REGS_MARKER@l
@@ -170,29 +162,7 @@
addi r11,r1,STACK_FRAME_OVERHEAD
addi r2,r12,-THREAD
stw r11,PT_REGS(r12)
-#if defined(CONFIG_40x)
- /* Check to see if the dbcr0 register is set up to debug. Use the
- internal debug mode bit to do this. */
- lwz r12,THREAD_DBCR0(r12)
- andis. r12,r12,DBCR0_IDM@h
-#endif
ACCOUNT_CPU_USER_ENTRY(r2, r11, r12)
-#if defined(CONFIG_40x)
- beq+ 3f
- /* From user and task is ptraced - load up global dbcr0 */
- li r12,-1 /* clear all pending debug events */
- mtspr SPRN_DBSR,r12
- lis r11,global_dbcr0@ha
- tophys(r11,r11)
- addi r11,r11,global_dbcr0@l
- lwz r12,0(r11)
- mtspr SPRN_DBCR0,r12
- lwz r12,4(r11)
- addi r12,r12,-1
- stw r12,4(r11)
-#endif
-
-3:
tovirt_novmstack r2, r2 /* set r2 to current */
lis r11, transfer_to_syscall@h
ori r11, r11, transfer_to_syscall@l
@@ -213,9 +183,6 @@
mtspr SPRN_SRR1,r10
mtspr SPRN_SRR0,r11
rfi /* jump to handler, enable MMU */
-#ifdef CONFIG_40x
- b . /* Prevent prefetch past rfi */
-#endif
99: b ret_from_kernel_syscall
.endm
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
deleted file mode 100644
index a1ae00689e0f..000000000000
--- a/arch/powerpc/kernel/head_40x.S
+++ /dev/null
@@ -1,715 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (c) 1995-1996 Gary Thomas <gdt@...uxppc.org>
- * Initial PowerPC version.
- * Copyright (c) 1996 Cort Dougan <cort@...nmt.edu>
- * Rewritten for PReP
- * Copyright (c) 1996 Paul Mackerras <paulus@...anu.edu.au>
- * Low-level exception handers, MMU support, and rewrite.
- * Copyright (c) 1997 Dan Malek <dmalek@....net>
- * PowerPC 8xx modifications.
- * Copyright (c) 1998-1999 TiVo, Inc.
- * PowerPC 403GCX modifications.
- * Copyright (c) 1999 Grant Erickson <grant@...e.umn.edu>
- * PowerPC 403GCX/405GP modifications.
- * Copyright 2000 MontaVista Software Inc.
- * PPC405 modifications
- * PowerPC 403GCX/405GP modifications.
- * Author: MontaVista Software, Inc.
- * frank_rowand@...sta.com or source@...sta.com
- * debbie_chu@...sta.com
- *
- * Module name: head_4xx.S
- *
- * Description:
- * Kernel execution entry point code.
- */
-
-#include <linux/init.h>
-#include <linux/pgtable.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/cputable.h>
-#include <asm/thread_info.h>
-#include <asm/ppc_asm.h>
-#include <asm/asm-offsets.h>
-#include <asm/ptrace.h>
-#include <asm/export.h>
-
-#include "head_32.h"
-
-/* As with the other PowerPC ports, it is expected that when code
- * execution begins here, the following registers contain valid, yet
- * optional, information:
- *
- * r3 - Board info structure pointer (DRAM, frequency, MAC address, etc.)
- * r4 - Starting address of the init RAM disk
- * r5 - Ending address of the init RAM disk
- * r6 - Start of kernel command line string (e.g. "mem=96m")
- * r7 - End of kernel command line string
- *
- * This is all going to change RSN when we add bi_recs....... -- Dan
- */
- __HEAD
-_ENTRY(_stext);
-_ENTRY(_start);
-
- mr r31,r3 /* save device tree ptr */
-
- /* We have to turn on the MMU right away so we get cache modes
- * set correctly.
- */
- bl initial_mmu
-
-/* We now have the lower 16 Meg mapped into TLB entries, and the caches
- * ready to work.
- */
-turn_on_mmu:
- lis r0,MSR_KERNEL@h
- ori r0,r0,MSR_KERNEL@l
- mtspr SPRN_SRR1,r0
- lis r0,start_here@h
- ori r0,r0,start_here@l
- mtspr SPRN_SRR0,r0
- rfi /* enables MMU */
- b . /* prevent prefetch past rfi */
-
-/*
- * This area is used for temporarily saving registers during the
- * critical exception prolog.
- */
- . = 0xc0
-crit_save:
-_ENTRY(crit_r10)
- .space 4
-_ENTRY(crit_r11)
- .space 4
-_ENTRY(crit_srr0)
- .space 4
-_ENTRY(crit_srr1)
- .space 4
-_ENTRY(saved_ksp_limit)
- .space 4
-
-/*
- * Exception prolog for critical exceptions. This is a little different
- * from the normal exception prolog above since a critical exception
- * can potentially occur at any point during normal exception processing.
- * Thus we cannot use the same SPRG registers as the normal prolog above.
- * Instead we use a couple of words of memory at low physical addresses.
- * This is OK since we don't support SMP on these processors.
- */
-#define CRITICAL_EXCEPTION_PROLOG \
- stw r10,crit_r10@l(0); /* save two registers to work with */\
- stw r11,crit_r11@l(0); \
- mfcr r10; /* save CR in r10 for now */\
- mfspr r11,SPRN_SRR3; /* check whether user or kernel */\
- andi. r11,r11,MSR_PR; \
- lis r11,critirq_ctx@ha; \
- tophys(r11,r11); \
- lwz r11,critirq_ctx@l(r11); \
- beq 1f; \
- /* COMING FROM USER MODE */ \
- mfspr r11,SPRN_SPRG_THREAD; /* if from user, start at top of */\
- lwz r11,TASK_STACK-THREAD(r11); /* this thread's kernel stack */\
-1: addi r11,r11,THREAD_SIZE-INT_FRAME_SIZE; /* Alloc an excpt frm */\
- tophys(r11,r11); \
- stw r10,_CCR(r11); /* save various registers */\
- stw r12,GPR12(r11); \
- stw r9,GPR9(r11); \
- mflr r10; \
- stw r10,_LINK(r11); \
- mfspr r12,SPRN_DEAR; /* save DEAR and ESR in the frame */\
- stw r12,_DEAR(r11); /* since they may have had stuff */\
- mfspr r9,SPRN_ESR; /* in them at the point where the */\
- stw r9,_ESR(r11); /* exception was taken */\
- mfspr r12,SPRN_SRR2; \
- stw r1,GPR1(r11); \
- mfspr r9,SPRN_SRR3; \
- stw r1,0(r11); \
- tovirt(r1,r11); \
- rlwinm r9,r9,0,14,12; /* clear MSR_WE (necessary?) */\
- stw r0,GPR0(r11); \
- lis r10, STACK_FRAME_REGS_MARKER@ha; /* exception frame marker */\
- addi r10, r10, STACK_FRAME_REGS_MARKER@l; \
- stw r10, 8(r11); \
- SAVE_4GPRS(3, r11); \
- SAVE_2GPRS(7, r11)
-
- /*
- * State at this point:
- * r9 saved in stack frame, now saved SRR3 & ~MSR_WE
- * r10 saved in crit_r10 and in stack frame, trashed
- * r11 saved in crit_r11 and in stack frame,
- * now phys stack/exception frame pointer
- * r12 saved in stack frame, now saved SRR2
- * CR saved in stack frame, CR0.EQ = !SRR3.PR
- * LR, DEAR, ESR in stack frame
- * r1 saved in stack frame, now virt stack/excframe pointer
- * r0, r3-r8 saved in stack frame
- */
-
-/*
- * Exception vectors.
- */
-#define CRITICAL_EXCEPTION(n, label, hdlr) \
- START_EXCEPTION(n, label); \
- CRITICAL_EXCEPTION_PROLOG; \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- EXC_XFER_TEMPLATE(hdlr, n+2, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \
- crit_transfer_to_handler, ret_from_crit_exc)
-
-/*
- * 0x0100 - Critical Interrupt Exception
- */
- CRITICAL_EXCEPTION(0x0100, CriticalInterrupt, unknown_exception)
-
-/*
- * 0x0200 - Machine Check Exception
- */
- CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
-
-/*
- * 0x0300 - Data Storage Exception
- * This happens for just a few reasons. U0 set (but we don't do that),
- * or zone protection fault (user violation, write to protected page).
- * The other Data TLB exceptions bail out to this point
- * if they can't resolve the lightweight TLB fault.
- */
- START_EXCEPTION(0x0300, DataStorage)
- EXCEPTION_PROLOG
- mfspr r5, SPRN_ESR /* Grab the ESR, save it, pass arg3 */
- stw r5, _ESR(r11)
- mfspr r4, SPRN_DEAR /* Grab the DEAR, save it, pass arg2 */
- stw r4, _DEAR(r11)
- EXC_XFER_LITE(0x300, handle_page_fault)
-
-/*
- * 0x0400 - Instruction Storage Exception
- * This is caused by a fetch from non-execute or guarded pages.
- */
- START_EXCEPTION(0x0400, InstructionAccess)
- EXCEPTION_PROLOG
- mr r4,r12 /* Pass SRR0 as arg2 */
- stw r4, _DEAR(r11)
- li r5,0 /* Pass zero as arg3 */
- EXC_XFER_LITE(0x400, handle_page_fault)
-
-/* 0x0500 - External Interrupt Exception */
- EXCEPTION(0x0500, HardwareInterrupt, do_IRQ, EXC_XFER_LITE)
-
-/* 0x0600 - Alignment Exception */
- START_EXCEPTION(0x0600, Alignment)
- EXCEPTION_PROLOG
- mfspr r4,SPRN_DEAR /* Grab the DEAR and save it */
- stw r4,_DEAR(r11)
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_STD(0x600, alignment_exception)
-
-/* 0x0700 - Program Exception */
- START_EXCEPTION(0x0700, ProgramCheck)
- EXCEPTION_PROLOG
- mfspr r4,SPRN_ESR /* Grab the ESR and save it */
- stw r4,_ESR(r11)
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_STD(0x700, program_check_exception)
-
- EXCEPTION(0x0800, Trap_08, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x0900, Trap_09, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x0A00, Trap_0A, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x0B00, Trap_0B, unknown_exception, EXC_XFER_STD)
-
-/* 0x0C00 - System Call Exception */
- START_EXCEPTION(0x0C00, SystemCall)
- SYSCALL_ENTRY 0xc00
-/* Trap_0D is commented out to get more space for system call exception */
-
-/* EXCEPTION(0x0D00, Trap_0D, unknown_exception, EXC_XFER_STD) */
- EXCEPTION(0x0E00, Trap_0E, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x0F00, Trap_0F, unknown_exception, EXC_XFER_STD)
-
-/* 0x1000 - Programmable Interval Timer (PIT) Exception */
- . = 0x1000
- b Decrementer
-
-/* 0x1010 - Fixed Interval Timer (FIT) Exception
-*/
- . = 0x1010
- b FITException
-
-/* 0x1020 - Watchdog Timer (WDT) Exception
-*/
- . = 0x1020
- b WDTException
-
-/* 0x1100 - Data TLB Miss Exception
- * As the name implies, translation is not in the MMU, so search the
- * page tables and fix it. The only purpose of this function is to
- * load TLB entries from the page table if they exist.
- */
- START_EXCEPTION(0x1100, DTLBMiss)
- mtspr SPRN_SPRG_SCRATCH0, r10 /* Save some working registers */
- mtspr SPRN_SPRG_SCRATCH1, r11
- mtspr SPRN_SPRG_SCRATCH3, r12
- mtspr SPRN_SPRG_SCRATCH4, r9
- mfcr r12
- mfspr r9, SPRN_PID
- mtspr SPRN_SPRG_SCRATCH5, r9
- mfspr r10, SPRN_DEAR /* Get faulting address */
-
- /* If we are faulting a kernel address, we have to use the
- * kernel page tables.
- */
- lis r11, PAGE_OFFSET@h
- cmplw r10, r11
- blt+ 3f
- lis r11, swapper_pg_dir@h
- ori r11, r11, swapper_pg_dir@l
- li r9, 0
- mtspr SPRN_PID, r9 /* TLB will have 0 TID */
- b 4f
-
- /* Get the PGD for the current thread.
- */
-3:
- mfspr r11,SPRN_SPRG_THREAD
- lwz r11,PGDIR(r11)
-4:
- tophys(r11, r11)
- rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
- lwz r11, 0(r11) /* Get L1 entry */
- andi. r9, r11, _PMD_PRESENT /* Check if it points to a PTE page */
- beq 2f /* Bail if no table */
-
- rlwimi r11, r10, 22, 20, 29 /* Compute PTE address */
- lwz r11, 0(r11) /* Get Linux PTE */
- li r9, _PAGE_PRESENT | _PAGE_ACCESSED
- andc. r9, r9, r11 /* Check permission */
- bne 5f
-
- rlwinm r9, r11, 1, _PAGE_RW /* dirty => rw */
- and r9, r9, r11 /* hwwrite = dirty & rw */
- rlwimi r11, r9, 0, _PAGE_RW /* replace rw by hwwrite */
-
- /* Create TLB tag. This is the faulting address plus a static
- * set of bits. These are size, valid, E, U0.
- */
- li r9, 0x00c0
- rlwimi r10, r9, 0, 20, 31
-
- b finish_tlb_load
-
-2: /* Check for possible large-page pmd entry */
- rlwinm. r9, r11, 2, 22, 24
- beq 5f
-
- /* Create TLB tag. This is the faulting address, plus a static
- * set of bits (valid, E, U0) plus the size from the PMD.
- */
- ori r9, r9, 0x40
- rlwimi r10, r9, 0, 20, 31
-
- b finish_tlb_load
-
-5:
- /* The bailout. Restore registers to pre-exception conditions
- * and call the heavyweights to help us out.
- */
- mfspr r9, SPRN_SPRG_SCRATCH5
- mtspr SPRN_PID, r9
- mtcr r12
- mfspr r9, SPRN_SPRG_SCRATCH4
- mfspr r12, SPRN_SPRG_SCRATCH3
- mfspr r11, SPRN_SPRG_SCRATCH1
- mfspr r10, SPRN_SPRG_SCRATCH0
- b DataStorage
-
-/* 0x1200 - Instruction TLB Miss Exception
- * Nearly the same as above, except we get our information from different
- * registers and bailout to a different point.
- */
- START_EXCEPTION(0x1200, ITLBMiss)
- mtspr SPRN_SPRG_SCRATCH0, r10 /* Save some working registers */
- mtspr SPRN_SPRG_SCRATCH1, r11
- mtspr SPRN_SPRG_SCRATCH3, r12
- mtspr SPRN_SPRG_SCRATCH4, r9
- mfcr r12
- mfspr r9, SPRN_PID
- mtspr SPRN_SPRG_SCRATCH5, r9
- mfspr r10, SPRN_SRR0 /* Get faulting address */
-
- /* If we are faulting a kernel address, we have to use the
- * kernel page tables.
- */
- lis r11, PAGE_OFFSET@h
- cmplw r10, r11
- blt+ 3f
- lis r11, swapper_pg_dir@h
- ori r11, r11, swapper_pg_dir@l
- li r9, 0
- mtspr SPRN_PID, r9 /* TLB will have 0 TID */
- b 4f
-
- /* Get the PGD for the current thread.
- */
-3:
- mfspr r11,SPRN_SPRG_THREAD
- lwz r11,PGDIR(r11)
-4:
- tophys(r11, r11)
- rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
- lwz r11, 0(r11) /* Get L1 entry */
- andi. r9, r11, _PMD_PRESENT /* Check if it points to a PTE page */
- beq 2f /* Bail if no table */
-
- rlwimi r11, r10, 22, 20, 29 /* Compute PTE address */
- lwz r11, 0(r11) /* Get Linux PTE */
- li r9, _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_EXEC
- andc. r9, r9, r11 /* Check permission */
- bne 5f
-
- rlwinm r9, r11, 1, _PAGE_RW /* dirty => rw */
- and r9, r9, r11 /* hwwrite = dirty & rw */
- rlwimi r11, r9, 0, _PAGE_RW /* replace rw by hwwrite */
-
- /* Create TLB tag. This is the faulting address plus a static
- * set of bits. These are size, valid, E, U0.
- */
- li r9, 0x00c0
- rlwimi r10, r9, 0, 20, 31
-
- b finish_tlb_load
-
-2: /* Check for possible large-page pmd entry */
- rlwinm. r9, r11, 2, 22, 24
- beq 5f
-
- /* Create TLB tag. This is the faulting address, plus a static
- * set of bits (valid, E, U0) plus the size from the PMD.
- */
- ori r9, r9, 0x40
- rlwimi r10, r9, 0, 20, 31
-
- b finish_tlb_load
-
-5:
- /* The bailout. Restore registers to pre-exception conditions
- * and call the heavyweights to help us out.
- */
- mfspr r9, SPRN_SPRG_SCRATCH5
- mtspr SPRN_PID, r9
- mtcr r12
- mfspr r9, SPRN_SPRG_SCRATCH4
- mfspr r12, SPRN_SPRG_SCRATCH3
- mfspr r11, SPRN_SPRG_SCRATCH1
- mfspr r10, SPRN_SPRG_SCRATCH0
- b InstructionAccess
-
- EXCEPTION(0x1300, Trap_13, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1400, Trap_14, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1600, Trap_16, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1700, Trap_17, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1800, Trap_18, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1900, Trap_19, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1A00, Trap_1A, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1B00, Trap_1B, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1C00, Trap_1C, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1D00, Trap_1D, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1E00, Trap_1E, unknown_exception, EXC_XFER_STD)
- EXCEPTION(0x1F00, Trap_1F, unknown_exception, EXC_XFER_STD)
-
-/* Check for a single step debug exception while in an exception
- * handler before state has been saved. This is to catch the case
- * where an instruction that we are trying to single step causes
- * an exception (eg ITLB/DTLB miss) and thus the first instruction of
- * the exception handler generates a single step debug exception.
- *
- * If we get a debug trap on the first instruction of an exception handler,
- * we reset the MSR_DE in the _exception handler's_ MSR (the debug trap is
- * a critical exception, so we are using SPRN_CSRR1 to manipulate the MSR).
- * The exception handler was handling a non-critical interrupt, so it will
- * save (and later restore) the MSR via SPRN_SRR1, which will still have
- * the MSR_DE bit set.
- */
- /* 0x2000 - Debug Exception */
- START_EXCEPTION(0x2000, DebugTrap)
- CRITICAL_EXCEPTION_PROLOG
-
- /*
- * If this is a single step or branch-taken exception in an
- * exception entry sequence, it was probably meant to apply to
- * the code where the exception occurred (since exception entry
- * doesn't turn off DE automatically). We simulate the effect
- * of turning off DE on entry to an exception handler by turning
- * off DE in the SRR3 value and clearing the debug status.
- */
- mfspr r10,SPRN_DBSR /* check single-step/branch taken */
- andis. r10,r10,DBSR_IC@h
- beq+ 2f
-
- andi. r10,r9,MSR_IR|MSR_PR /* check supervisor + MMU off */
- beq 1f /* branch and fix it up */
-
- mfspr r10,SPRN_SRR2 /* Faulting instruction address */
- cmplwi r10,0x2100
- bgt+ 2f /* address above exception vectors */
-
- /* here it looks like we got an inappropriate debug exception. */
-1: rlwinm r9,r9,0,~MSR_DE /* clear DE in the SRR3 value */
- lis r10,DBSR_IC@h /* clear the IC event */
- mtspr SPRN_DBSR,r10
- /* restore state and get out */
- lwz r10,_CCR(r11)
- lwz r0,GPR0(r11)
- lwz r1,GPR1(r11)
- mtcrf 0x80,r10
- mtspr SPRN_SRR2,r12
- mtspr SPRN_SRR3,r9
- lwz r9,GPR9(r11)
- lwz r12,GPR12(r11)
- lwz r10,crit_r10@l(0)
- lwz r11,crit_r11@l(0)
- rfci
- b .
-
- /* continue normal handling for a critical exception... */
-2: mfspr r4,SPRN_DBSR
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_TEMPLATE(DebugException, 0x2002, \
- (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \
- crit_transfer_to_handler, ret_from_crit_exc)
-
- /* Programmable Interval Timer (PIT) Exception. (from 0x1000) */
-Decrementer:
- EXCEPTION_PROLOG
- lis r0,TSR_PIS@h
- mtspr SPRN_TSR,r0 /* Clear the PIT exception */
- addi r3,r1,STACK_FRAME_OVERHEAD
- EXC_XFER_LITE(0x1000, timer_interrupt)
-
- /* Fixed Interval Timer (FIT) Exception. (from 0x1010) */
-FITException:
- EXCEPTION_PROLOG
- addi r3,r1,STACK_FRAME_OVERHEAD;
- EXC_XFER_STD(0x1010, unknown_exception)
-
- /* Watchdog Timer (WDT) Exception. (from 0x1020) */
-WDTException:
- CRITICAL_EXCEPTION_PROLOG;
- addi r3,r1,STACK_FRAME_OVERHEAD;
- EXC_XFER_TEMPLATE(WatchdogException, 0x1020+2,
- (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)),
- crit_transfer_to_handler, ret_from_crit_exc)
-
-/* Other PowerPC processors, namely those derived from the 6xx-series
- * have vectors from 0x2100 through 0x2F00 defined, but marked as reserved.
- * However, for the 4xx-series processors these are neither defined nor
- * reserved.
- */
-
- /* Damn, I came up one instruction too many to fit into the
- * exception space :-). Both the instruction and data TLB
- * miss get to this point to load the TLB.
- * r10 - TLB_TAG value
- * r11 - Linux PTE
- * r9 - available to use
- * PID - loaded with proper value when we get here
- * Upon exit, we reload everything and RFI.
- * Actually, it will fit now, but oh well.....a common place
- * to load the TLB.
- */
-tlb_4xx_index:
- .long 0
-finish_tlb_load:
- /*
- * Clear out the software-only bits in the PTE to generate the
- * TLB_DATA value. These are the bottom 2 bits of the RPM, the
- * top 3 bits of the zone field, and M.
- */
- li r9, 0x0ce2
- andc r11, r11, r9
-
- /* load the next available TLB index. */
- lwz r9, tlb_4xx_index@l(0)
- addi r9, r9, 1
- andi. r9, r9, PPC40X_TLB_SIZE - 1
- stw r9, tlb_4xx_index@l(0)
-
- tlbwe r11, r9, TLB_DATA /* Load TLB LO */
- tlbwe r10, r9, TLB_TAG /* Load TLB HI */
-
- /* Done...restore registers and get out of here.
- */
- mfspr r9, SPRN_SPRG_SCRATCH5
- mtspr SPRN_PID, r9
- mtcr r12
- mfspr r9, SPRN_SPRG_SCRATCH4
- mfspr r12, SPRN_SPRG_SCRATCH3
- mfspr r11, SPRN_SPRG_SCRATCH1
- mfspr r10, SPRN_SPRG_SCRATCH0
- rfi /* Should sync shadow TLBs */
- b . /* prevent prefetch past rfi */
-
-/* This is where the main kernel code starts.
- */
-start_here:
-
- /* ptr to current */
- lis r2,init_task@h
- ori r2,r2,init_task@l
-
- /* ptr to phys current thread */
- tophys(r4,r2)
- addi r4,r4,THREAD /* init task's THREAD */
- mtspr SPRN_SPRG_THREAD,r4
-
- /* stack */
- lis r1,init_thread_union@ha
- addi r1,r1,init_thread_union@l
- li r0,0
- stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1)
-
- bl early_init /* We have to do this with MMU on */
-
-/*
- * Decide what sort of machine this is and initialize the MMU.
- */
-#ifdef CONFIG_KASAN
- bl kasan_early_init
-#endif
- li r3,0
- mr r4,r31
- bl machine_init
- bl MMU_init
-
-/* Go back to running unmapped so we can load up new values
- * and change to using our exception vectors.
- * On the 4xx, all we have to do is invalidate the TLB to clear
- * the old 16M byte TLB mappings.
- */
- lis r4,2f@h
- ori r4,r4,2f@l
- tophys(r4,r4)
- lis r3,(MSR_KERNEL & ~(MSR_IR|MSR_DR))@h
- ori r3,r3,(MSR_KERNEL & ~(MSR_IR|MSR_DR))@l
- mtspr SPRN_SRR0,r4
- mtspr SPRN_SRR1,r3
- rfi
- b . /* prevent prefetch past rfi */
-
-/* Load up the kernel context */
-2:
- sync /* Flush to memory before changing TLB */
- tlbia
- isync /* Flush shadow TLBs */
-
- /* set up the PTE pointers for the Abatron bdiGDB.
- */
- lis r6, swapper_pg_dir@h
- ori r6, r6, swapper_pg_dir@l
- lis r5, abatron_pteptrs@h
- ori r5, r5, abatron_pteptrs@l
- stw r5, 0xf0(0) /* Must match your Abatron config file */
- tophys(r5,r5)
- stw r6, 0(r5)
-
-/* Now turn on the MMU for real! */
- lis r4,MSR_KERNEL@h
- ori r4,r4,MSR_KERNEL@l
- lis r3,start_kernel@h
- ori r3,r3,start_kernel@l
- mtspr SPRN_SRR0,r3
- mtspr SPRN_SRR1,r4
- rfi /* enable MMU and jump to start_kernel */
- b . /* prevent prefetch past rfi */
-
-/* Set up the initial MMU state so we can do the first level of
- * kernel initialization. This maps the first 16 MBytes of memory 1:1
- * virtual to physical and more importantly sets the cache mode.
- */
-initial_mmu:
- tlbia /* Invalidate all TLB entries */
- isync
-
- /* We should still be executing code at physical address 0x0000xxxx
- * at this point. However, start_here is at virtual address
- * 0xC000xxxx. So, set up a TLB mapping to cover this once
- * translation is enabled.
- */
-
- lis r3,KERNELBASE@h /* Load the kernel virtual address */
- ori r3,r3,KERNELBASE@l
- tophys(r4,r3) /* Load the kernel physical address */
-
- iccci r0,r3 /* Invalidate the i-cache before use */
-
- /* Load the kernel PID.
- */
- li r0,0
- mtspr SPRN_PID,r0
- sync
-
- /* Configure and load one entry into TLB slots 63 */
- clrrwi r4,r4,10 /* Mask off the real page number */
- ori r4,r4,(TLB_WR | TLB_EX) /* Set the write and execute bits */
-
- clrrwi r3,r3,10 /* Mask off the effective page number */
- ori r3,r3,(TLB_VALID | TLB_PAGESZ(PAGESZ_16M))
-
- li r0,63 /* TLB slot 63 */
-
- tlbwe r4,r0,TLB_DATA /* Load the data portion of the entry */
- tlbwe r3,r0,TLB_TAG /* Load the tag portion of the entry */
-
- isync
-
- /* Establish the exception vector base
- */
- lis r4,KERNELBASE@h /* EVPR only uses the high 16-bits */
- tophys(r0,r4) /* Use the physical address */
- mtspr SPRN_EVPR,r0
-
- blr
-
-_GLOBAL(abort)
- mfspr r13,SPRN_DBCR0
- oris r13,r13,DBCR0_RST_SYSTEM@h
- mtspr SPRN_DBCR0,r13
-
-_GLOBAL(set_context)
-
-#ifdef CONFIG_BDI_SWITCH
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is the second parameter.
- */
- lis r5, abatron_pteptrs@ha
- stw r4, abatron_pteptrs@l + 0x4(r5)
-#endif
- sync
- mtspr SPRN_PID,r3
- isync /* Need an isync to flush shadow */
- /* TLBs after changing PID */
- blr
-
-/* We put a few things here that have to be page-aligned. This stuff
- * goes at the beginning of the data segment, which is page-aligned.
- */
- .data
- .align 12
- .globl sdata
-sdata:
- .globl empty_zero_page
-empty_zero_page:
- .space 4096
-EXPORT_SYMBOL(empty_zero_page)
- .globl swapper_pg_dir
-swapper_pg_dir:
- .space PGD_TABLE_SIZE
-
-/* Room for two PTE pointers, usually the kernel and current user pointers
- * to their respective root page table.
- */
-abatron_pteptrs:
- .space 8
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 7d0f7682d01d..e69ba409dda1 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -760,7 +760,7 @@ void __init init_IRQ(void)
ppc_md.init_IRQ();
}
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
void *critirq_ctx[NR_CPUS] __read_mostly;
void *dbgirq_ctx[NR_CPUS] __read_mostly;
void *mcheckirq_ctx[NR_CPUS] __read_mostly;
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 409080208a6c..95a238696ce6 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -48,7 +48,7 @@ static struct hard_trap_info
{ 0x0800, 0x08 /* SIGFPE */ }, /* fp unavailable */
{ 0x0900, 0x0e /* SIGALRM */ }, /* decrementer */
{ 0x0c00, 0x14 /* SIGCHLD */ }, /* system call */
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_BOOKE
{ 0x2002, 0x05 /* SIGTRAP */ }, /* debug */
#if defined(CONFIG_FSL_BOOKE)
{ 0x2010, 0x08 /* SIGFPE */ }, /* spe unavailable */
@@ -67,7 +67,7 @@ static struct hard_trap_info
{ 0x2010, 0x08 /* SIGFPE */ }, /* fp unavailable */
{ 0x2020, 0x08 /* SIGFPE */ }, /* ap unavailable */
#endif
-#else /* ! (defined(CONFIG_40x) || defined(CONFIG_BOOKE)) */
+#else /* !CONFIG_BOOKE */
{ 0x0d00, 0x05 /* SIGTRAP */ }, /* single-step */
#if defined(CONFIG_PPC_8xx)
{ 0x1000, 0x04 /* SIGILL */ }, /* software emulation */
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 717e658b90fd..a6d76af11cdb 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -215,46 +215,6 @@ _GLOBAL(low_choose_7447a_dfs)
#endif /* CONFIG_CPU_FREQ_PMAC && CONFIG_PPC_BOOK3S_32 */
-#ifdef CONFIG_40x
-
-/*
- * Do an IO access in real mode
- */
-_GLOBAL(real_readb)
- mfmsr r7
- rlwinm r0,r7,0,~MSR_DR
- sync
- mtmsr r0
- sync
- isync
- lbz r3,0(r3)
- sync
- mtmsr r7
- sync
- isync
- blr
-_ASM_NOKPROBE_SYMBOL(real_readb)
-
- /*
- * Do an IO access in real mode
- */
-_GLOBAL(real_writeb)
- mfmsr r7
- rlwinm r0,r7,0,~MSR_DR
- sync
- mtmsr r0
- sync
- isync
- stb r3,0(r4)
- sync
- mtmsr r7
- sync
- isync
- blr
-_ASM_NOKPROBE_SYMBOL(real_writeb)
-
-#endif /* CONFIG_40x */
-
/*
* Copy a whole page. We use the dcbz instruction on the destination
* to reduce memory traffic (it eliminates the unnecessary reads of
diff --git a/arch/powerpc/kernel/setup.h b/arch/powerpc/kernel/setup.h
index 2dd0d9cb5a20..f0687f34a5b0 100644
--- a/arch/powerpc/kernel/setup.h
+++ b/arch/powerpc/kernel/setup.h
@@ -29,7 +29,7 @@ void setup_tlb_core_data(void);
static inline void setup_tlb_core_data(void) { };
#endif
-#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE)
void exc_lvl_early_init(void);
#else
static inline void exc_lvl_early_init(void) { };
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 8ba49a6bf515..cff64de781dc 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -175,7 +175,7 @@ void __init emergency_stack_init(void)
}
#endif
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
void __init exc_lvl_early_init(void)
{
unsigned int i, hw_cpu;
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 92481463f9dc..8d15d66a00e8 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -737,7 +737,7 @@ static int __init get_freq(char *name, int cells, unsigned long *val)
static void start_cpu_decrementer(void)
{
-#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE
unsigned int tcr;
/* Clear any pending timer interrupts */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 3ec7b443fe6b..44399b798490 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -2178,7 +2178,7 @@ void unrecoverable_exception(struct pt_regs *regs)
}
NOKPROBE_SYMBOL(unrecoverable_exception);
-#if defined(CONFIG_BOOKE_WDT) || defined(CONFIG_40x)
+#ifdef CONFIG_BOOKE_WDT
/*
* Default handler for a Watchdog exception,
* spins until a reboot occurs
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index 01595e8cafe7..d7be60d86e6d 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -49,9 +49,6 @@ void __init udbg_early_init(void)
#elif defined(CONFIG_PPC_EARLY_DEBUG_44x)
/* PPC44x debug */
udbg_init_44x_as1();
-#elif defined(CONFIG_PPC_EARLY_DEBUG_40x)
- /* PPC40x debug */
- udbg_init_40x_realmode();
#elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
udbg_init_cpm();
#elif defined(CONFIG_PPC_EARLY_DEBUG_USBGECKO)
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 9356b60d6030..748b7022713a 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -273,26 +273,3 @@ void __init udbg_init_44x_as1(void)
}
#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
-
-#ifdef CONFIG_PPC_EARLY_DEBUG_40x
-
-static u8 udbg_uart_in_40x(unsigned int reg)
-{
- return real_readb((void __iomem *)CONFIG_PPC_EARLY_DEBUG_40x_PHYSADDR
- + reg);
-}
-
-static void udbg_uart_out_40x(unsigned int reg, u8 val)
-{
- real_writeb(val, (void __iomem *)CONFIG_PPC_EARLY_DEBUG_40x_PHYSADDR
- + reg);
-}
-
-void __init udbg_init_40x_realmode(void)
-{
- udbg_uart_in = udbg_uart_in_40x;
- udbg_uart_out = udbg_uart_out_40x;
- udbg_use_uart();
-}
-
-#endif /* CONFIG_PPC_EARLY_DEBUG_40x */
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 0ad6d476d01d..4928863d035d 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -20,9 +20,9 @@
#include <asm/trace.h>
/*
- * On 40x and 8xx, we directly inline tlbia and tlbivax
+ * On 8xx, we directly inline tlbia
*/
-#if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx)
+#ifdef CONFIG_PPC_8xx
static inline void _tlbil_all(void)
{
asm volatile ("sync; tlbia; isync" : : : "memory");
@@ -35,7 +35,7 @@ static inline void _tlbil_pid(unsigned int pid)
}
#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
-#else /* CONFIG_40x || CONFIG_PPC_8xx */
+#else /* CONFIG_PPC_8xx */
extern void _tlbil_all(void);
extern void _tlbil_pid(unsigned int pid);
#ifdef CONFIG_PPC_BOOK3E
@@ -43,7 +43,7 @@ extern void _tlbil_pid_noind(unsigned int pid);
#else
#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
#endif
-#endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */
+#endif /* !CONFIG_PPC_8xx */
/*
* On 8xx, we directly inline tlbie, on others, it's extern
diff --git a/arch/powerpc/mm/nohash/40x.c b/arch/powerpc/mm/nohash/40x.c
deleted file mode 100644
index 95751c322f6c..000000000000
--- a/arch/powerpc/mm/nohash/40x.c
+++ /dev/null
@@ -1,152 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * This file contains the routines for initializing the MMU
- * on the 4xx series of chips.
- * -- paulus
- *
- * Derived from arch/ppc/mm/init.c:
- * Copyright (C) 1995-1996 Gary Thomas (gdt@...uxppc.org)
- *
- * Modifications by Paul Mackerras (PowerMac) (paulus@...anu.edu.au)
- * and Cort Dougan (PReP) (cort@...nmt.edu)
- * Copyright (C) 1996 Paul Mackerras
- *
- * Derived from "arch/i386/mm/init.c"
- * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/highmem.h>
-#include <linux/memblock.h>
-
-#include <asm/prom.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/mmu.h>
-#include <linux/uaccess.h>
-#include <asm/smp.h>
-#include <asm/bootx.h>
-#include <asm/machdep.h>
-#include <asm/setup.h>
-
-#include <mm/mmu_decl.h>
-
-extern int __map_without_ltlbs;
-/*
- * MMU_init_hw does the chip-specific initialization of the MMU hardware.
- */
-void __init MMU_init_hw(void)
-{
- /*
- * The Zone Protection Register (ZPR) defines how protection will
- * be applied to every page which is a member of a given zone. At
- * present, we utilize only two of the 4xx's zones.
- * The zone index bits (of ZSEL) in the PTE are used for software
- * indicators, except the LSB. For user access, zone 1 is used,
- * for kernel access, zone 0 is used. We set all but zone 1
- * to zero, allowing only kernel access as indicated in the PTE.
- * For zone 1, we set a 01 binary (a value of 10 will not work)
- * to allow user access as indicated in the PTE. This also allows
- * kernel access as indicated in the PTE.
- */
-
- mtspr(SPRN_ZPR, 0x10000000);
-
- flush_instruction_cache();
-
- /*
- * Set up the real-mode cache parameters for the exception vector
- * handlers (which are run in real-mode).
- */
-
- mtspr(SPRN_DCWR, 0x00000000); /* All caching is write-back */
-
- /*
- * Cache instruction and data space where the exception
- * vectors and the kernel live in real-mode.
- */
-
- mtspr(SPRN_DCCR, 0xFFFF0000); /* 2GByte of data space at 0x0. */
- mtspr(SPRN_ICCR, 0xFFFF0000); /* 2GByte of instr. space at 0x0. */
-}
-
-#define LARGE_PAGE_SIZE_16M (1<<24)
-#define LARGE_PAGE_SIZE_4M (1<<22)
-
-unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
-{
- unsigned long v, s, mapped;
- phys_addr_t p;
-
- v = KERNELBASE;
- p = 0;
- s = total_lowmem;
-
- if (__map_without_ltlbs)
- return 0;
-
- while (s >= LARGE_PAGE_SIZE_16M) {
- pmd_t *pmdp;
- unsigned long val = p | _PMD_SIZE_16M | _PAGE_EXEC | _PAGE_RW;
-
- pmdp = pmd_off_k(v);
- *pmdp++ = __pmd(val);
- *pmdp++ = __pmd(val);
- *pmdp++ = __pmd(val);
- *pmdp++ = __pmd(val);
-
- v += LARGE_PAGE_SIZE_16M;
- p += LARGE_PAGE_SIZE_16M;
- s -= LARGE_PAGE_SIZE_16M;
- }
-
- while (s >= LARGE_PAGE_SIZE_4M) {
- pmd_t *pmdp;
- unsigned long val = p | _PMD_SIZE_4M | _PAGE_EXEC | _PAGE_RW;
-
- pmdp = pmd_off_k(v);
- *pmdp = __pmd(val);
-
- v += LARGE_PAGE_SIZE_4M;
- p += LARGE_PAGE_SIZE_4M;
- s -= LARGE_PAGE_SIZE_4M;
- }
-
- mapped = total_lowmem - s;
-
- /* If the size of RAM is not an exact power of two, we may not
- * have covered RAM in its entirety with 16 and 4 MiB
- * pages. Consequently, restrict the top end of RAM currently
- * allocable so that calls to the MEMBLOCK to allocate PTEs for "tail"
- * coverage with normal-sized pages (or other reasons) do not
- * attempt to allocate outside the allowed range.
- */
- memblock_set_current_limit(mapped);
-
- return mapped;
-}
-
-void setup_initial_memory_limit(phys_addr_t first_memblock_base,
- phys_addr_t first_memblock_size)
-{
- /* We don't currently support the first MEMBLOCK not mapping 0
- * physical on those processors
- */
- BUG_ON(first_memblock_base != 0);
-
- /* 40x can only access 16MB at the moment (see head_40x.S) */
- memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
-}
diff --git a/arch/powerpc/mm/nohash/Makefile b/arch/powerpc/mm/nohash/Makefile
index 0424f6ce5bd8..eaa6d8938d83 100644
--- a/arch/powerpc/mm/nohash/Makefile
+++ b/arch/powerpc/mm/nohash/Makefile
@@ -4,7 +4,6 @@ ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
obj-y += mmu_context.o tlb.o tlb_low.o
obj-$(CONFIG_PPC_BOOK3E_64) += tlb_low_64e.o book3e_pgtable.o
-obj-$(CONFIG_40x) += 40x.o
obj-$(CONFIG_44x) += 44x.o
obj-$(CONFIG_PPC_8xx) += 8xx.o
obj-$(CONFIG_PPC_FSL_BOOK3E) += fsl_booke.o
diff --git a/arch/powerpc/mm/nohash/tlb_low.S b/arch/powerpc/mm/nohash/tlb_low.S
index 68797e072f55..08488cddb997 100644
--- a/arch/powerpc/mm/nohash/tlb_low.S
+++ b/arch/powerpc/mm/nohash/tlb_low.S
@@ -32,32 +32,7 @@
#include <asm/asm-compat.h>
#include <asm/feature-fixups.h>
-#if defined(CONFIG_40x)
-
-/*
- * 40x implementation needs only tlbil_va
- */
-_GLOBAL(__tlbil_va)
- /* We run the search with interrupts disabled because we have to change
- * the PID and I don't want to preempt when that happens.
- */
- mfmsr r5
- mfspr r6,SPRN_PID
- wrteei 0
- mtspr SPRN_PID,r4
- tlbsx. r3, 0, r3
- mtspr SPRN_PID,r6
- wrtee r5
- bne 1f
- sync
- /* There are only 64 TLB entries, so r3 < 64, which means bit 25 is
- * clear. Since 25 is the V bit in the TLB_TAG, loading this value
- * will invalidate the TLB entry. */
- tlbwe r3, r3, TLB_TAG
- isync
-1: blr
-
-#elif defined(CONFIG_PPC_8xx)
+#if defined(CONFIG_PPC_8xx)
/*
* Nothing to do for 8xx, everything is inline
diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c
index c13d64c3b019..5f58859bb5c0 100644
--- a/arch/powerpc/platforms/4xx/pci.c
+++ b/arch/powerpc/platforms/4xx/pci.c
@@ -1265,102 +1265,6 @@ static struct ppc4xx_pciex_hwops ppc460sx_pcie_hwops __initdata = {
#endif /* CONFIG_44x */
-#ifdef CONFIG_40x
-
-static int __init ppc405ex_pciex_core_init(struct device_node *np)
-{
- /* Nothing to do, return 2 ports */
- return 2;
-}
-
-static void ppc405ex_pcie_phy_reset(struct ppc4xx_pciex_port *port)
-{
- /* Assert the PE0_PHY reset */
- mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01010000);
- msleep(1);
-
- /* deassert the PE0_hotreset */
- if (port->endpoint)
- mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01111000);
- else
- mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x01101000);
-
- /* poll for phy !reset */
- /* XXX FIXME add timeout */
- while (!(mfdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSTA) & 0x00001000))
- ;
-
- /* deassert the PE0_gpl_utl_reset */
- mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x00101000);
-}
-
-static int __init ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
-{
- u32 val;
-
- if (port->endpoint)
- val = PTYPE_LEGACY_ENDPOINT;
- else
- val = PTYPE_ROOT_PORT;
-
- mtdcri(SDR0, port->sdr_base + PESDRn_DLPSET,
- 1 << 24 | val << 20 | LNKW_X1 << 12);
-
- mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET1, 0x00000000);
- mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET2, 0x01010000);
- mtdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSET1, 0x720F0000);
- mtdcri(SDR0, port->sdr_base + PESDRn_405EX_PHYSET2, 0x70600003);
-
- /*
- * Only reset the PHY when no link is currently established.
- * This is for the Atheros PCIe board which has problems to establish
- * the link (again) after this PHY reset. All other currently tested
- * PCIe boards don't show this problem.
- * This has to be re-tested and fixed in a later release!
- */
- val = mfdcri(SDR0, port->sdr_base + PESDRn_LOOP);
- if (!(val & 0x00001000))
- ppc405ex_pcie_phy_reset(port);
-
- dcr_write(port->dcrs, DCRO_PEGPL_CFG, 0x10000000); /* guarded on */
-
- port->has_ibpre = 1;
-
- return ppc4xx_pciex_port_reset_sdr(port);
-}
-
-static int ppc405ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
-{
- dcr_write(port->dcrs, DCRO_PEGPL_SPECIAL, 0x0);
-
- /*
- * Set buffer allocations and then assert VRB and TXE.
- */
- out_be32(port->utl_base + PEUTL_OUTTR, 0x02000000);
- out_be32(port->utl_base + PEUTL_INTR, 0x02000000);
- out_be32(port->utl_base + PEUTL_OPDBSZ, 0x04000000);
- out_be32(port->utl_base + PEUTL_PBBSZ, 0x21000000);
- out_be32(port->utl_base + PEUTL_IPHBSZ, 0x02000000);
- out_be32(port->utl_base + PEUTL_IPDBSZ, 0x04000000);
- out_be32(port->utl_base + PEUTL_RCIRQEN, 0x00f00000);
- out_be32(port->utl_base + PEUTL_PCTL, 0x80800066);
-
- out_be32(port->utl_base + PEUTL_PBCTL, 0x08000000);
-
- return 0;
-}
-
-static struct ppc4xx_pciex_hwops ppc405ex_pcie_hwops __initdata =
-{
- .want_sdr = true,
- .core_init = ppc405ex_pciex_core_init,
- .port_init_hw = ppc405ex_pciex_init_port_hw,
- .setup_utl = ppc405ex_pciex_init_utl,
- .check_link = ppc4xx_pciex_check_link_sdr,
-};
-
-#endif /* CONFIG_40x */
-
#ifdef CONFIG_476FPE
static int __init ppc_476fpe_pciex_core_init(struct device_node *np)
{
@@ -1429,10 +1333,6 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
if (of_device_is_compatible(np, "ibm,plb-pciex-apm821xx"))
ppc4xx_pciex_hwops = &apm821xx_pcie_hwops;
#endif /* CONFIG_44x */
-#ifdef CONFIG_40x
- if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
- ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
-#endif
#ifdef CONFIG_476FPE
if (of_device_is_compatible(np, "ibm,plb-pciex-476fpe")
|| of_device_is_compatible(np, "ibm,plb-pciex-476gtr"))
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 45ce09db8f46..150d0c704f6e 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -51,13 +51,6 @@ config PPC_8xx
select HAVE_ARCH_VMAP_STACK
select HUGETLBFS
-config 40x
- bool "AMCC 40x"
- select PPC_DCR_NATIVE
- select PPC_UDBG_16550
- select 4xx_SOC
- select HAVE_PCI
-
config 44x
bool "AMCC 44x, 46x or 47x"
select PPC_DCR_NATIVE
@@ -250,7 +243,7 @@ config FSL_EMB_PERF_EVENT_E500
config 4xx
bool
- depends on 40x || 44x
+ depends on 44x
default y
config BOOKE
--
2.25.0
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