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Message-Id: <20231219-sam-sparc32-sunset-v3-v1-15-64bb44b598c5@ravnborg.org>
Date: Tue, 19 Dec 2023 23:03:20 +0100
From: Sam Ravnborg via B4 Relay <devnull+sam.ravnborg.org@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Arnd Bergmann <arnd@...nel.org>, Andreas Larsson <andreas@...sler.com>
Cc: Helge Deller <deller@....de>, Alexander Viro <viro@...iv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Stern <stern@...land.harvard.edu>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, sparclinux@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-sound@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH 15/27] sparc32: Drop check for sparc_model
From: Sam Ravnborg <sam@...nborg.org>
sparc32 is always LEON, so no need to check for the model.
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
arch/sparc/include/asm/cpu_type.h | 18 ---------
arch/sparc/include/asm/io_32.h | 4 +-
arch/sparc/include/asm/pgtsrmmu.h | 1 -
arch/sparc/kernel/devices.c | 7 +---
arch/sparc/kernel/ioport.c | 4 +-
arch/sparc/kernel/leon_pmc.c | 16 ++++----
arch/sparc/kernel/setup_32.c | 79 +--------------------------------------
7 files changed, 12 insertions(+), 117 deletions(-)
diff --git a/arch/sparc/include/asm/cpu_type.h b/arch/sparc/include/asm/cpu_type.h
index 2b59799859d1..3e0154c3f41d 100644
--- a/arch/sparc/include/asm/cpu_type.h
+++ b/arch/sparc/include/asm/cpu_type.h
@@ -2,28 +2,10 @@
#ifndef __ASM_CPU_TYPE_H
#define __ASM_CPU_TYPE_H
-/*
- * Sparc (general) CPU types
- */
-enum sparc_cpu {
- sun4m = 0x00,
- sun4d = 0x01,
- sun4e = 0x02,
- sun4u = 0x03, /* V8 ploos ploos */
- sun_unknown = 0x04,
- ap1000 = 0x05, /* almost a sun4m */
- sparc_leon = 0x06, /* Leon SoC */
-};
-
#ifdef CONFIG_SPARC32
-extern enum sparc_cpu sparc_cpu_model;
#define SUN4M_NCPUS 4 /* Architectural limit of sun4m. */
-#else
-
-#define sparc_cpu_model sun4u
-
#endif
#endif /* __ASM_CPU_TYPE_H */
diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index 549f0a72280d..83abe709d120 100644
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -138,11 +138,11 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *);
static inline int sbus_can_dma_64bit(void)
{
- return 0; /* actually, sparc_cpu_model==sun4d */
+ return 0;
}
static inline int sbus_can_burst64(void)
{
- return 0; /* actually, sparc_cpu_model==sun4d */
+ return 0;
}
struct device;
void sbus_set_sbus64(struct device *, int);
diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index 7cb5cbc83211..664d4bba1bcb 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -124,7 +124,6 @@ static inline void srmmu_flush_whole_tlb(void)
"i" (ASI_M_FLUSH_PROBE) : "memory");
}
-
#endif /* !(__ASSEMBLY__) */
#endif /* !(_SPARC_PGTSRMMU_H) */
diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index b3c2d51b22c4..2963e89611a3 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -26,8 +26,6 @@
static char *cpu_mid_prop(void)
{
- if (sparc_cpu_model == sun4d)
- return "cpu-id";
return "mid";
}
@@ -40,8 +38,6 @@ static int check_cpu_node(phandle nd, int *cur_inst,
*prom_node = nd;
if (mid) {
*mid = prom_getintdefault(nd, cpu_mid_prop(), 0);
- if (sparc_cpu_model == sun4m)
- *mid &= 3;
}
return 0;
}
@@ -92,8 +88,7 @@ static int cpu_mid_compare(phandle nd, int instance, void *_arg)
int this_mid;
this_mid = prom_getintdefault(nd, cpu_mid_prop(), 0);
- if (this_mid == desired_mid
- || (sparc_cpu_model == sun4m && (this_mid & 3) == desired_mid))
+ if (this_mid == desired_mid)
return 0;
return -ENODEV;
}
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 5ebca5c7af1e..cf0ace29704a 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -309,9 +309,7 @@ arch_initcall(sparc_register_ioport);
void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
enum dma_data_direction dir)
{
- if (dir != DMA_TO_DEVICE &&
- sparc_cpu_model == sparc_leon &&
- !sparc_leon3_snooping_enabled())
+ if (dir != DMA_TO_DEVICE && !sparc_leon3_snooping_enabled())
leon_flush_dcache_all();
}
diff --git a/arch/sparc/kernel/leon_pmc.c b/arch/sparc/kernel/leon_pmc.c
index 6c00cbad7fb5..d4a2d49f941c 100644
--- a/arch/sparc/kernel/leon_pmc.c
+++ b/arch/sparc/kernel/leon_pmc.c
@@ -79,15 +79,13 @@ static void pmc_leon_idle(void)
/* Install LEON Power Down function */
static int __init leon_pmc_install(void)
{
- if (sparc_cpu_model == sparc_leon) {
- /* Assign power management IDLE handler */
- if (pmc_leon_need_fixup())
- sparc_idle = pmc_leon_idle_fixup;
- else
- sparc_idle = pmc_leon_idle;
-
- printk(KERN_INFO "leon: power management initialized\n");
- }
+ /* Assign power management IDLE handler */
+ if (pmc_leon_need_fixup())
+ sparc_idle = pmc_leon_idle_fixup;
+ else
+ sparc_idle = pmc_leon_idle;
+
+ printk(KERN_INFO "leon: power management initialized\n");
return 0;
}
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 5a497140c52a..cb981f2794b3 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -189,30 +189,12 @@ static void __init per_cpu_patch(void)
{
struct cpuid_patch_entry *p;
- if (sparc_cpu_model == sun4m) {
- /* Nothing to do, this is what the unpatched code
- * targets.
- */
- return;
- }
-
p = &__cpuid_patch;
while (p < &__cpuid_patch_end) {
unsigned long addr = p->addr;
unsigned int *insns;
- switch (sparc_cpu_model) {
- case sun4d:
- insns = &p->sun4d[0];
- break;
-
- case sparc_leon:
- insns = &p->leon[0];
- break;
- default:
- prom_printf("Unknown cpu type, halting.\n");
- prom_halt();
- }
+ insns = &p->leon[0];
*(unsigned int *) (addr + 0) = insns[0];
flushi(addr + 0);
*(unsigned int *) (addr + 4) = insns[1];
@@ -224,31 +206,9 @@ static void __init per_cpu_patch(void)
}
}
-struct leon_1insn_patch_entry {
- unsigned int addr;
- unsigned int insn;
-};
-
-enum sparc_cpu sparc_cpu_model;
-EXPORT_SYMBOL(sparc_cpu_model);
-
static __init void leon_patch(void)
{
- struct leon_1insn_patch_entry *start = (void *)__leon_1insn_patch;
- struct leon_1insn_patch_entry *end = (void *)__leon_1insn_patch_end;
-
/* Default instruction is leon - no patching */
- if (sparc_cpu_model == sparc_leon)
- return;
-
- while (start < end) {
- unsigned long addr = start->addr;
-
- *(unsigned int *)(addr) = start->insn;
- flushi(addr);
-
- start++;
- }
}
struct tt_entry *sparc_ttable;
@@ -259,22 +219,6 @@ struct tt_entry *sparc_ttable;
void __init sparc32_start_kernel(struct linux_romvec *rp)
{
prom_init(rp);
-
- /* Set sparc_cpu_model */
- sparc_cpu_model = sun_unknown;
- if (!strcmp(&cputypval[0], "sun4m"))
- sparc_cpu_model = sun4m;
- if (!strcmp(&cputypval[0], "sun4s"))
- sparc_cpu_model = sun4m; /* CP-1200 with PROM 2.30 -E */
- if (!strcmp(&cputypval[0], "sun4d"))
- sparc_cpu_model = sun4d;
- if (!strcmp(&cputypval[0], "sun4e"))
- sparc_cpu_model = sun4e;
- if (!strcmp(&cputypval[0], "sun4u"))
- sparc_cpu_model = sun4u;
- if (!strncmp(&cputypval[0], "leon" , 4))
- sparc_cpu_model = sparc_leon;
-
leon_patch();
start_kernel();
}
@@ -295,27 +239,6 @@ void __init setup_arch(char **cmdline_p)
register_console(&prom_early_console);
- switch(sparc_cpu_model) {
- case sun4m:
- pr_info("ARCH: SUN4M\n");
- break;
- case sun4d:
- pr_info("ARCH: SUN4D\n");
- break;
- case sun4e:
- pr_info("ARCH: SUN4E\n");
- break;
- case sun4u:
- pr_info("ARCH: SUN4U\n");
- break;
- case sparc_leon:
- pr_info("ARCH: LEON\n");
- break;
- default:
- pr_info("ARCH: UNKNOWN!\n");
- break;
- }
-
idprom_init();
load_mmu();
--
2.34.1
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