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Message-ID: <20241114131114.602234-2-mpe@ellerman.id.au>
Date: Fri, 15 Nov 2024 00:11:05 +1100
From: Michael Ellerman <mpe@...erman.id.au>
To: <linuxppc-dev@...ts.ozlabs.org>
Cc: <linux-kernel@...r.kernel.org>,
<geert@...ux-m68k.org>,
<arnd@...db.de>
Subject: [RFC PATCH 02/10] powerpc/chrp: Remove various dead code
Remove various bits of code that are dead now that PPC_CHRP has been
removed.
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
---
arch/powerpc/Kconfig | 5 +--
arch/powerpc/boot/Makefile | 1 -
arch/powerpc/include/asm/processor.h | 6 ---
arch/powerpc/kernel/head_book3s_32.S | 12 ------
arch/powerpc/kernel/pci_32.c | 2 +-
arch/powerpc/kernel/prom_init.c | 56 ----------------------------
6 files changed, 3 insertions(+), 79 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a9dd4c39ec00..f79e28f47dea 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -418,11 +418,10 @@ config PPC_DCR
config PPC_PCI_OF_BUS_MAP
bool "Use pci_to_OF_bus_map (deprecated)"
depends on PPC32
- depends on PPC_PMAC || PPC_CHRP
+ depends on PPC_PMAC
help
This option uses pci_to_OF_bus_map to map OF nodes to PCI devices, which
- restricts the system to only having 256 PCI buses. On CHRP it also causes
- the "pci-OF-bus-map" property to be created in the device tree.
+ restricts the system to only having 256 PCI buses.
If unsure, say "N".
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 1ff6ad4f6cd2..8a0fb044e885 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -278,7 +278,6 @@ image-$(CONFIG_PPC_PSERIES) += zImage.pseries
image-$(CONFIG_PPC_POWERNV) += zImage.pseries
image-$(CONFIG_PPC_IBM_CELL_BLADE) += zImage.pseries
image-$(CONFIG_PPC_PS3) += dtbImage.ps3
-image-$(CONFIG_PPC_CHRP) += zImage.chrp
image-$(CONFIG_PPC_EFIKA) += zImage.chrp
image-$(CONFIG_PPC_PMAC) += zImage.pmac
image-$(CONFIG_PPC_HOLLY) += dtbImage.holly
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 6b94de17201c..b00b5ae2cfef 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -53,12 +53,6 @@
#define _PREP_IBM 0x00 /* ibm prep */
#define _PREP_Bull 0x03 /* bull prep */
-/* CHRP sub-platform types. These are arbitrary */
-#define _CHRP_Motorola 0x04 /* motorola chrp, the cobra */
-#define _CHRP_IBM 0x05 /* IBM chrp, the longtrail and longtrail 2 */
-#define _CHRP_Pegasos 0x06 /* Genesi/bplan's Pegasos and Pegasos2 */
-#define _CHRP_briq 0x07 /* TotalImpact's briQ */
-
#if defined(__KERNEL__) && defined(CONFIG_PPC32)
extern int _chrp_type;
diff --git a/arch/powerpc/kernel/head_book3s_32.S b/arch/powerpc/kernel/head_book3s_32.S
index cb2bca76be53..c6e297fd36e2 100644
--- a/arch/powerpc/kernel/head_book3s_32.S
+++ b/arch/powerpc/kernel/head_book3s_32.S
@@ -256,20 +256,8 @@ __secondary_hold_acknowledge:
*/
START_EXCEPTION(INTERRUPT_MACHINE_CHECK, MachineCheck)
EXCEPTION_PROLOG_0
-#ifdef CONFIG_PPC_CHRP
- mtspr SPRN_SPRG_SCRATCH2,r1
- mfspr r1, SPRN_SPRG_THREAD
- lwz r1, RTAS_SP(r1)
- cmpwi cr1, r1, 0
- bne cr1, 7f
- mfspr r1, SPRN_SPRG_SCRATCH2
-#endif /* CONFIG_PPC_CHRP */
EXCEPTION_PROLOG_1
7: EXCEPTION_PROLOG_2 0x200 MachineCheck
-#ifdef CONFIG_PPC_CHRP
- beq cr1, 1f
- twi 31, 0, 0
-#endif
1: prepare_transfer_to_handler
bl machine_check_exception
b interrupt_return
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index ce0c8623e563..461e1a7f4fc2 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -277,7 +277,7 @@ static int __init pcibios_init(void)
#endif
}
-#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_CHRP)
+#ifdef CONFIG_PPC_PMAC
#ifdef CONFIG_PPC_PCI_OF_BUS_MAP
pci_bus_count = next_busno;
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 73210e5bcfa7..94ffc52440bd 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2792,61 +2792,6 @@ static void __init flatten_device_tree(void)
dt_struct_start, dt_struct_end);
}
-#ifdef CONFIG_PPC_CHRP
-/*
- * Pegasos and BriQ lacks the "ranges" property in the isa node
- * Pegasos needs decimal IRQ 14/15, not hexadecimal
- * Pegasos has the IDE configured in legacy mode, but advertised as native
- */
-static void __init fixup_device_tree_chrp(void)
-{
- phandle ph;
- u32 prop[6];
- u32 rloc = 0x01006000; /* IO space; PCI device = 12 */
- char *name;
- int rc;
-
- name = "/pci@...00000/isa@c";
- ph = call_prom("finddevice", 1, 1, ADDR(name));
- if (!PHANDLE_VALID(ph)) {
- name = "/pci@...00000/isa@6";
- ph = call_prom("finddevice", 1, 1, ADDR(name));
- rloc = 0x01003000; /* IO space; PCI device = 6 */
- }
- if (PHANDLE_VALID(ph)) {
- rc = prom_getproplen(ph, "ranges");
- if (rc == 0 || rc == PROM_ERROR) {
- prom_printf("Fixing up missing ISA range on Pegasos...\n");
-
- prop[0] = 0x1;
- prop[1] = 0x0;
- prop[2] = rloc;
- prop[3] = 0x0;
- prop[4] = 0x0;
- prop[5] = 0x00010000;
- prom_setprop(ph, name, "ranges", prop, sizeof(prop));
- }
- }
-
- name = "/pci@...00000/ide@C,1";
- ph = call_prom("finddevice", 1, 1, ADDR(name));
- if (PHANDLE_VALID(ph)) {
- prom_printf("Fixing up IDE interrupt on Pegasos...\n");
- prop[0] = 14;
- prop[1] = 0x0;
- prom_setprop(ph, name, "interrupts", prop, 2*sizeof(u32));
- prom_printf("Fixing up IDE class-code on Pegasos...\n");
- rc = prom_getprop(ph, "class-code", prop, sizeof(u32));
- if (rc == sizeof(u32)) {
- prop[0] &= ~0x5;
- prom_setprop(ph, name, "class-code", prop, sizeof(u32));
- }
- }
-}
-#else
-#define fixup_device_tree_chrp()
-#endif
-
#if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC)
static void __init fixup_device_tree_pmac(void)
{
@@ -3109,7 +3054,6 @@ static inline void fixup_device_tree_pasemi(void) { }
static void __init fixup_device_tree(void)
{
- fixup_device_tree_chrp();
fixup_device_tree_pmac();
fixup_device_tree_efika();
fixup_device_tree_pasemi();
--
2.47.0
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