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authorGraeme Russ <graeme.russ@gmail.com>2011-12-27 22:46:43 +1100
committerGraeme Russ <graeme.russ@gmail.com>2012-01-04 22:19:01 +1100
commitd653244b12dbc4a954e1bdfd04222bbbaf67329c (patch)
tree965618562edd5e8000c078cc9fe9c7d7084b72f9 /arch/x86
parent3766bb33a52217a5921c4a0a65a7281859d15bce (diff)
downloadu-boot-linaro-stable-d653244b12dbc4a954e1bdfd04222bbbaf67329c.tar.gz
x86: Create weak init_cache() and default enable_caches() functions
-- Changes for v2: - Tweaked commit title
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/cpu/cpu.c18
-rw-r--r--arch/x86/include/asm/u-boot-x86.h1
-rw-r--r--arch/x86/lib/board.c1
3 files changed, 17 insertions, 3 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index 8c3b92c78..e9bb0d770 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -140,6 +140,14 @@ int cpu_init_f(void) __attribute__((weak, alias("x86_cpu_init_f")));
int x86_cpu_init_r(void)
{
+ /* Initialize core interrupt and exception functionality of CPU */
+ cpu_init_interrupts();
+ return 0;
+}
+int cpu_init_r(void) __attribute__((weak, alias("x86_cpu_init_r")));
+
+void x86_enable_caches(void)
+{
const u32 nw_cd_rst = ~(X86_CR0_NW | X86_CR0_CD);
/* turn on the cache and disable write through */
@@ -147,12 +155,16 @@ int x86_cpu_init_r(void)
"andl %0, %%eax\n"
"movl %%eax, %%cr0\n"
"wbinvd\n" : : "i" (nw_cd_rst) : "eax");
+}
+void enable_caches(void) __attribute__((weak, alias("x86_enable_caches")));
+
+int x86_init_cache(void)
+{
+ enable_caches();
- /* Initialize core interrupt and exception functionality of CPU */
- cpu_init_interrupts();
return 0;
}
-int cpu_init_r(void) __attribute__((weak, alias("x86_cpu_init_r")));
+int init_cache(void) __attribute__((weak, alias("x86_init_cache")));
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h
index 5540d5176..878a1ee77 100644
--- a/arch/x86/include/asm/u-boot-x86.h
+++ b/arch/x86/include/asm/u-boot-x86.h
@@ -39,6 +39,7 @@ int x86_cpu_init_f(void);
int cpu_init_f(void);
void init_gd(gd_t *id, u64 *gdt_addr);
void setup_gdt(gd_t *id, u64 *gdt_addr);
+int init_cache(void);
/* cpu/.../timer.c */
void timer_isr(void *);
diff --git a/arch/x86/lib/board.c b/arch/x86/lib/board.c
index 3d82165af..56acf3563 100644
--- a/arch/x86/lib/board.c
+++ b/arch/x86/lib/board.c
@@ -140,6 +140,7 @@ init_fnc_t *init_sequence_f[] = {
init_fnc_t *init_sequence_r[] = {
copy_gd_to_ram,
+ init_cache,
cpu_init_r, /* basic cpu dependent setup */
board_early_init_r, /* basic board dependent setup */
dram_init, /* configure available RAM banks */