diff options
| author | TsiChung Liew <tsicliew@gmail.com> | 2010-03-11 22:12:53 -0600 |
|---|---|---|
| committer | TsiChung Liew <tsicliew@gmail.com> | 2010-03-24 11:09:37 -0500 |
| commit | dd9f054ede433de73b137987fb3dc066e8d24ebb (patch) | |
| tree | c4bafde866a253612976f0f3f8805093360c5c44 /cpu/mcf5227x/start.S | |
| parent | f628e2f72daee810aa568619b6629da68ad042d6 (diff) | |
| download | u-boot-imx-dd9f054ede433de73b137987fb3dc066e8d24ebb.zip u-boot-imx-dd9f054ede433de73b137987fb3dc066e8d24ebb.tar.gz u-boot-imx-dd9f054ede433de73b137987fb3dc066e8d24ebb.tar.bz2 | |
ColdFire: Cache update for all platforms
The CF will call cache functions in lib_m68/cache.c and the
cache settings are defined in platform configuration file.
Signed-off-by: TsiChung Liew <tsicliew@gmail.com>
Diffstat (limited to 'cpu/mcf5227x/start.S')
| -rw-r--r-- | cpu/mcf5227x/start.S | 100 |
1 files changed, 8 insertions, 92 deletions
diff --git a/cpu/mcf5227x/start.S b/cpu/mcf5227x/start.S index 0c9c89c..30428f1 100644 --- a/cpu/mcf5227x/start.S +++ b/cpu/mcf5227x/start.S @@ -24,16 +24,12 @@ #include <config.h> #include <timestamp.h> #include "version.h" +#include <asm/cache.h> #ifndef CONFIG_IDENT_STRING #define CONFIG_IDENT_STRING "" #endif -/* last three long word reserved for cache status */ -#define ICACHE_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END- 4) -#define DCACHE_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END- 8) -#define CACR_STATUS (CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-12) - #define _START _start #define _FAULT _fault @@ -378,21 +374,19 @@ _start: movec %d0, %RAMBAR1 #endif + /* invalidate and disable cache */ + move.l #CF_CACR_CINV, %d0 /* Invalidate cache cmd */ + movec %d0, %CACR /* Invalidate cache */ + move.l #0, %d0 + movec %d0, %ACR0 + movec %d0, %ACR1 + /* initialize general use internal ram */ move.l #0, %d0 move.l #(ICACHE_STATUS), %a1 /* icache */ move.l #(DCACHE_STATUS), %a2 /* icache */ - move.l #(CACR_STATUS), %a3 /* CACR */ move.l %d0, (%a1) move.l %d0, (%a2) - move.l %d0, (%a3) - - /* invalidate and disable cache */ - move.l #0x01000000, %d0 /* Invalidate cache cmd */ - movec %d0, %CACR /* Invalidate cache */ - move.l #0, %d0 - movec %d0, %ACR0 - movec %d0, %ACR1 /* set stackpointer to end of internal ram to get some stackspace for the first c-code */ @@ -510,84 +504,6 @@ _int_handler: RESTORE_ALL /*------------------------------------------------------------------------------*/ -/* cache functions */ - .globl icache_enable -icache_enable: - move.l #0x01200000, %d0 /* Invalid cache */ - movec %d0, %CACR - - move.l #(CONFIG_SYS_SDRAM_BASE + 0x1c000), %d0 - movec %d0, %ACR0 - - move.l #0x81600610, %d0 /* Enable cache */ - movec %d0, %CACR - - move.l #(ICACHE_STATUS), %a1 - moveq #1, %d0 - move.l %d0, (%a1) - rts - - .globl icache_disable -icache_disable: - move.l #0x01F00000, %d0 /* Setup cache mask */ - movec %d0, %CACR /* Invalidate icache */ - clr.l %d0 - movec %d0, %ACR0 - movec %d0, %ACR1 - - move.l #(ICACHE_STATUS), %a1 - moveq #0, %d0 - move.l %d0, (%a1) - rts - - .globl icache_status -icache_status: - move.l #(ICACHE_STATUS), %a1 - move.l (%a1), %d0 - rts - - .globl icache_invalid -icache_invalid: - move.l #0x80600610, %d0 /* Invalidate icache */ - movec %d0, %CACR /* Enable and invalidate cache */ - rts - - .globl dcache_enable -dcache_enable: - move.l #0x01200000, %d0 /* Invalid cache */ - movec %d0, %CACR - - move.l #0x81300610, %d0 - movec %d0, %CACR - - move.l #(DCACHE_STATUS), %a1 - moveq #1, %d0 - move.l %d0, (%a1) - rts - - .globl dcache_disable -dcache_disable: - move.l #0x81600610, %d0 /* Setup cache mask */ - movec %d0, %CACR /* Invalidate icache */ - - move.l #(DCACHE_STATUS), %a1 - moveq #0, %d0 - move.l %d0, (%a1) - rts - - .globl dcache_invalid -dcache_invalid: - move.l #0x81100610, %d0 /* Setup cache mask */ - movec %d0, %CACR /* Enable and invalidate cache */ - rts - - .globl dcache_status -dcache_status: - move.l #(DCACHE_STATUS), %a1 - move.l (%a1), %d0 - rts - -/*------------------------------------------------------------------------------*/ .globl version_string version_string: |