diff options
Diffstat (limited to 'cpu/mcf52x2/start.S')
| -rw-r--r-- | cpu/mcf52x2/start.S | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/cpu/mcf52x2/start.S b/cpu/mcf52x2/start.S index ba6b884..0dd4de5 100644 --- a/cpu/mcf52x2/start.S +++ b/cpu/mcf52x2/start.S @@ -120,6 +120,12 @@ _start: nop move.w #0x2700,%sr +#if defined(CONFIG_M5208) + /* Initialize RAMBAR: locate SRAM and validate it */ + move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0 + movec %d0, %RAMBAR1 +#endif + #if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253) move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set MBAR address + valid flag */ move.c %d0, %MBAR @@ -195,15 +201,6 @@ _after_flashbar_copy: movec %d0, %RAMBAR1 #endif -#if 0 - /* 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 -#endif - /* set stackpointer to end of internal ram to get some stackspace for the first c-code */ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp clr.l %sp@- @@ -340,6 +337,24 @@ _int_handler: /*------------------------------------------------------------------------------*/ /* cache functions */ +#ifdef CONFIG_M5208 + .globl icache_enable +icache_enable: + move.l #0x01000000, %d0 /* Invalidate cache cmd */ + movec %d0, %CACR /* Invalidate cache */ + move.l #(CONFIG_SYS_SDRAM_BASE + 0xC000), %d0 /* Setup cache mask */ + movec %d0, %ACR0 /* Enable cache */ + + move.l #0x80000200, %d0 /* Setup cache mask */ + movec %d0, %CACR /* Enable cache */ + nop + + move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1 + moveq #1, %d0 + move.l %d0, (%a1) + rts +#endif + #ifdef CONFIG_M5271 .globl icache_enable icache_enable: |