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sh: Use boot_cpu_data for CPU probe.

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This moves off of smp_processor_id() and only sets the probe
information for the boot CPU directly. This will be copied out
for the secondaries, so there's no reason to do this each time.

This also allows for some header tidying.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2007-09-27 18:18:39 +09:00
parent c3af39758c
commit cb7af21f7d
5 changed files with 126 additions and 130 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/sh/kernel/cpu/sh2/probe.c
View File

@@ -10,26 +10,25 @@
* for more details.
*/
#include <linux/init.h>
#include <linux/smp.h>
#include <asm/processor.h>
#include <asm/cache.h>
int __init detect_cpu_and_cache_system(void)
{
#if defined(CONFIG_CPU_SUBTYPE_SH7619)
current_cpu_data.type = CPU_SH7619;
current_cpu_data.dcache.ways = 4;
current_cpu_data.dcache.way_incr = (1<<12);
current_cpu_data.dcache.sets = 256;
current_cpu_data.dcache.entry_shift = 4;
current_cpu_data.dcache.linesz = L1_CACHE_BYTES;
current_cpu_data.dcache.flags = 0;
boot_cpu_data.type = CPU_SH7619;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.dcache.way_incr = (1<<12);
boot_cpu_data.dcache.sets = 256;
boot_cpu_data.dcache.entry_shift = 4;
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.flags = 0;
#endif
/*
* SH-2 doesn't have separate caches
*/
current_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
current_cpu_data.icache = current_cpu_data.dcache;
boot_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
boot_cpu_data.icache = boot_cpu_data.dcache;
return 0;
}

18
arch/sh/kernel/cpu/sh2a/probe.c
View File

@@ -17,15 +17,15 @@
int __init detect_cpu_and_cache_system(void)
{
/* Just SH7206 for now .. */
current_cpu_data.type = CPU_SH7206;
current_cpu_data.flags |= CPU_HAS_OP32;
boot_cpu_data.type = CPU_SH7206;
boot_cpu_data.flags |= CPU_HAS_OP32;
current_cpu_data.dcache.ways = 4;
current_cpu_data.dcache.way_incr = (1 << 11);
current_cpu_data.dcache.sets = 128;
current_cpu_data.dcache.entry_shift = 4;
current_cpu_data.dcache.linesz = L1_CACHE_BYTES;
current_cpu_data.dcache.flags = 0;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.dcache.way_incr = (1 << 11);
boot_cpu_data.dcache.sets = 128;
boot_cpu_data.dcache.entry_shift = 4;
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.flags = 0;
/*
* The icache is the same as the dcache as far as this setup is
@@ -33,7 +33,7 @@ int __init detect_cpu_and_cache_system(void)
* lacks the U bit that the dcache has, none of this has any bearing
* on the cache info.
*/
current_cpu_data.icache = current_cpu_data.dcache;
boot_cpu_data.icache = boot_cpu_data.dcache;
return 0;
}

47
arch/sh/kernel/cpu/sh3/probe.c
View File

@@ -50,47 +50,47 @@ int __init detect_cpu_and_cache_system(void)
back_to_P1();
current_cpu_data.dcache.ways = 4;
current_cpu_data.dcache.entry_shift = 4;
current_cpu_data.dcache.linesz = L1_CACHE_BYTES;
current_cpu_data.dcache.flags = 0;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.dcache.entry_shift = 4;
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.flags = 0;
/*
* 7709A/7729 has 16K cache (256-entry), while 7702 has only
* 2K(direct) 7702 is not supported (yet)
*/
if (data0 == data1 && data2 == data3) { /* Shadow */
current_cpu_data.dcache.way_incr = (1 << 11);
current_cpu_data.dcache.entry_mask = 0x7f0;
current_cpu_data.dcache.sets = 128;
current_cpu_data.type = CPU_SH7708;
boot_cpu_data.dcache.way_incr = (1 << 11);
boot_cpu_data.dcache.entry_mask = 0x7f0;
boot_cpu_data.dcache.sets = 128;
boot_cpu_data.type = CPU_SH7708;
current_cpu_data.flags |= CPU_HAS_MMU_PAGE_ASSOC;
boot_cpu_data.flags |= CPU_HAS_MMU_PAGE_ASSOC;
} else { /* 7709A or 7729 */
current_cpu_data.dcache.way_incr = (1 << 12);
current_cpu_data.dcache.entry_mask = 0xff0;
current_cpu_data.dcache.sets = 256;
current_cpu_data.type = CPU_SH7729;
boot_cpu_data.dcache.way_incr = (1 << 12);
boot_cpu_data.dcache.entry_mask = 0xff0;
boot_cpu_data.dcache.sets = 256;
boot_cpu_data.type = CPU_SH7729;
#if defined(CONFIG_CPU_SUBTYPE_SH7706)
current_cpu_data.type = CPU_SH7706;
boot_cpu_data.type = CPU_SH7706;
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7710)
current_cpu_data.type = CPU_SH7710;
boot_cpu_data.type = CPU_SH7710;
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7712)
current_cpu_data.type = CPU_SH7712;
boot_cpu_data.type = CPU_SH7712;
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7720)
current_cpu_data.type = CPU_SH7720;
boot_cpu_data.type = CPU_SH7720;
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7705)
current_cpu_data.type = CPU_SH7705;
boot_cpu_data.type = CPU_SH7705;
#if defined(CONFIG_SH7705_CACHE_32KB)
current_cpu_data.dcache.way_incr = (1 << 13);
current_cpu_data.dcache.entry_mask = 0x1ff0;
current_cpu_data.dcache.sets = 512;
boot_cpu_data.dcache.way_incr = (1 << 13);
boot_cpu_data.dcache.entry_mask = 0x1ff0;
boot_cpu_data.dcache.sets = 512;
ctrl_outl(CCR_CACHE_32KB, CCR3);
#else
ctrl_outl(CCR_CACHE_16KB, CCR3);
@@ -101,9 +101,8 @@ int __init detect_cpu_and_cache_system(void)
/*
* SH-3 doesn't have separate caches
*/
current_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
current_cpu_data.icache = current_cpu_data.dcache;
boot_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
boot_cpu_data.icache = boot_cpu_data.dcache;
return 0;
}

171
arch/sh/kernel/cpu/sh4/probe.c
View File

@@ -12,7 +12,6 @@
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/smp.h>
#include <asm/processor.h>
#include <asm/cache.h>
@@ -36,34 +35,34 @@ int __init detect_cpu_and_cache_system(void)
/*
* Setup some sane SH-4 defaults for the icache
*/
current_cpu_data.icache.way_incr = (1 << 13);
current_cpu_data.icache.entry_shift = 5;
current_cpu_data.icache.sets = 256;
current_cpu_data.icache.ways = 1;
current_cpu_data.icache.linesz = L1_CACHE_BYTES;
boot_cpu_data.icache.way_incr = (1 << 13);
boot_cpu_data.icache.entry_shift = 5;
boot_cpu_data.icache.sets = 256;
boot_cpu_data.icache.ways = 1;
boot_cpu_data.icache.linesz = L1_CACHE_BYTES;
/*
* And again for the dcache ..
*/
current_cpu_data.dcache.way_incr = (1 << 14);
current_cpu_data.dcache.entry_shift = 5;
current_cpu_data.dcache.sets = 512;
current_cpu_data.dcache.ways = 1;
current_cpu_data.dcache.linesz = L1_CACHE_BYTES;
boot_cpu_data.dcache.way_incr = (1 << 14);
boot_cpu_data.dcache.entry_shift = 5;
boot_cpu_data.dcache.sets = 512;
boot_cpu_data.dcache.ways = 1;
boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
/*
* Setup some generic flags we can probe on SH-4A parts
*/
if (((pvr >> 16) & 0xff) == 0x10) {
if ((cvr & 0x10000000) == 0)
current_cpu_data.flags |= CPU_HAS_DSP;
boot_cpu_data.flags |= CPU_HAS_DSP;
current_cpu_data.flags |= CPU_HAS_LLSC;
boot_cpu_data.flags |= CPU_HAS_LLSC;
}
/* FPU detection works for everyone */
if ((cvr & 0x20000000) == 1)
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.flags |= CPU_HAS_FPU;
/* Mask off the upper chip ID */
pvr &= 0xffff;
@@ -74,140 +73,140 @@ int __init detect_cpu_and_cache_system(void)
*/
switch (pvr) {
case 0x205:
current_cpu_data.type = CPU_SH7750;
current_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
boot_cpu_data.type = CPU_SH7750;
boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
CPU_HAS_PERF_COUNTER;
break;
case 0x206:
current_cpu_data.type = CPU_SH7750S;
current_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
boot_cpu_data.type = CPU_SH7750S;
boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
CPU_HAS_PERF_COUNTER;
break;
case 0x1100:
current_cpu_data.type = CPU_SH7751;
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.type = CPU_SH7751;
boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x2001:
case 0x2004:
current_cpu_data.type = CPU_SH7770;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
boot_cpu_data.type = CPU_SH7770;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_LLSC;
boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_LLSC;
break;
case 0x2006:
case 0x200A:
if (prr == 0x61)
current_cpu_data.type = CPU_SH7781;
boot_cpu_data.type = CPU_SH7781;
else
current_cpu_data.type = CPU_SH7780;
boot_cpu_data.type = CPU_SH7780;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
CPU_HAS_LLSC;
break;
case 0x3000:
case 0x3003:
case 0x3009:
current_cpu_data.type = CPU_SH7343;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_LLSC;
boot_cpu_data.type = CPU_SH7343;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.flags |= CPU_HAS_LLSC;
break;
case 0x3004:
case 0x3007:
current_cpu_data.type = CPU_SH7785;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
boot_cpu_data.type = CPU_SH7785;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
CPU_HAS_LLSC;
break;
case 0x3008:
if (prr == 0xa0) {
current_cpu_data.type = CPU_SH7722;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_LLSC;
boot_cpu_data.type = CPU_SH7722;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.flags |= CPU_HAS_LLSC;
}
break;
case 0x4000: /* 1st cut */
case 0x4001: /* 2nd cut */
current_cpu_data.type = CPU_SHX3;
current_cpu_data.icache.ways = 4;
current_cpu_data.dcache.ways = 4;
current_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
boot_cpu_data.type = CPU_SHX3;
boot_cpu_data.icache.ways = 4;
boot_cpu_data.dcache.ways = 4;
boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
CPU_HAS_LLSC;
break;
case 0x8000:
current_cpu_data.type = CPU_ST40RA;
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.type = CPU_ST40RA;
boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x8100:
current_cpu_data.type = CPU_ST40GX1;
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.type = CPU_ST40GX1;
boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x700:
current_cpu_data.type = CPU_SH4_501;
current_cpu_data.icache.ways = 2;
current_cpu_data.dcache.ways = 2;
boot_cpu_data.type = CPU_SH4_501;
boot_cpu_data.icache.ways = 2;
boot_cpu_data.dcache.ways = 2;
break;
case 0x600:
current_cpu_data.type = CPU_SH4_202;
current_cpu_data.icache.ways = 2;
current_cpu_data.dcache.ways = 2;
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.type = CPU_SH4_202;
boot_cpu_data.icache.ways = 2;
boot_cpu_data.dcache.ways = 2;
boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x500 ... 0x501:
switch (prr) {
case 0x10:
current_cpu_data.type = CPU_SH7750R;
boot_cpu_data.type = CPU_SH7750R;
break;
case 0x11:
current_cpu_data.type = CPU_SH7751R;
boot_cpu_data.type = CPU_SH7751R;
break;
case 0x50 ... 0x5f:
current_cpu_data.type = CPU_SH7760;
boot_cpu_data.type = CPU_SH7760;
break;
}
current_cpu_data.icache.ways = 2;
current_cpu_data.dcache.ways = 2;
boot_cpu_data.icache.ways = 2;
boot_cpu_data.dcache.ways = 2;
current_cpu_data.flags |= CPU_HAS_FPU;
boot_cpu_data.flags |= CPU_HAS_FPU;
break;
default:
current_cpu_data.type = CPU_SH_NONE;
boot_cpu_data.type = CPU_SH_NONE;
break;
}
#ifdef CONFIG_SH_DIRECT_MAPPED
current_cpu_data.icache.ways = 1;
current_cpu_data.dcache.ways = 1;
boot_cpu_data.icache.ways = 1;
boot_cpu_data.dcache.ways = 1;
#endif
#ifdef CONFIG_CPU_HAS_PTEA
current_cpu_data.flags |= CPU_HAS_PTEA;
boot_cpu_data.flags |= CPU_HAS_PTEA;
#endif
/*
* On anything that's not a direct-mapped cache, look to the CVR
* for I/D-cache specifics.
*/
if (current_cpu_data.icache.ways > 1) {
if (boot_cpu_data.icache.ways > 1) {
size = sizes[(cvr >> 20) & 0xf];
current_cpu_data.icache.way_incr = (size >> 1);
current_cpu_data.icache.sets = (size >> 6);
boot_cpu_data.icache.way_incr = (size >> 1);
boot_cpu_data.icache.sets = (size >> 6);
}
/* And the rest of the D-cache */
if (current_cpu_data.dcache.ways > 1) {
if (boot_cpu_data.dcache.ways > 1) {
size = sizes[(cvr >> 16) & 0xf];
current_cpu_data.dcache.way_incr = (size >> 1);
current_cpu_data.dcache.sets = (size >> 6);
boot_cpu_data.dcache.way_incr = (size >> 1);
boot_cpu_data.dcache.sets = (size >> 6);
}
/*
@@ -215,7 +214,7 @@ int __init detect_cpu_and_cache_system(void)
*
* SH-4A's have an optional PIPT L2.
*/
if (current_cpu_data.flags & CPU_HAS_L2_CACHE) {
if (boot_cpu_data.flags & CPU_HAS_L2_CACHE) {
/*
* Size calculation is much more sensible
* than it is for the L1.
@@ -226,22 +225,22 @@ int __init detect_cpu_and_cache_system(void)
BUG_ON(!size);
current_cpu_data.scache.way_incr = (1 << 16);
current_cpu_data.scache.entry_shift = 5;
current_cpu_data.scache.ways = 4;
current_cpu_data.scache.linesz = L1_CACHE_BYTES;
boot_cpu_data.scache.way_incr = (1 << 16);
boot_cpu_data.scache.entry_shift = 5;
boot_cpu_data.scache.ways = 4;
boot_cpu_data.scache.linesz = L1_CACHE_BYTES;
current_cpu_data.scache.entry_mask =
(current_cpu_data.scache.way_incr -
current_cpu_data.scache.linesz);
boot_cpu_data.scache.entry_mask =
(boot_cpu_data.scache.way_incr -
boot_cpu_data.scache.linesz);
current_cpu_data.scache.sets = size /
(current_cpu_data.scache.linesz *
current_cpu_data.scache.ways);
boot_cpu_data.scache.sets = size /
(boot_cpu_data.scache.linesz *
boot_cpu_data.scache.ways);
current_cpu_data.scache.way_size =
(current_cpu_data.scache.sets *
current_cpu_data.scache.linesz);
boot_cpu_data.scache.way_size =
(boot_cpu_data.scache.sets *
boot_cpu_data.scache.linesz);
}
return 0;

1
include/asm-sh/processor.h
View File

@@ -10,7 +10,6 @@
#ifdef __KERNEL__
#include <linux/compiler.h>
#include <linux/smp.h>
#include <asm/page.h>
#include <asm/types.h>
#include <asm/cache.h>