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| author | Graeme Russ <graeme.russ@gmail.com> | 2010-10-07 20:03:26 +1100 |
|---|---|---|
| committer | Graeme Russ <graeme.russ@gmail.com> | 2010-10-07 20:03:26 +1100 |
| commit | 00940a229d564044d52a5449bce14090c7298f92 (patch) | |
| tree | 9ae61181efebefd3cc4c2c98be72a3044e49e61b | |
| parent | 6ae032a86aa21def97aada054bd24589fdb8e947 (diff) | |
| download | u-boot-imx-00940a229d564044d52a5449bce14090c7298f92.zip u-boot-imx-00940a229d564044d52a5449bce14090c7298f92.tar.gz u-boot-imx-00940a229d564044d52a5449bce14090c7298f92.tar.bz2 | |
x86: Move ECC initialisation outside RAM initialisation
To allow for 'load anywhere' images, the %ebp return pointer 'hack' must
be removed, so we cannot have two 'calls' to get_mem_size
| -rw-r--r-- | arch/i386/cpu/sc520/sc520_asm.S | 17 | ||||
| -rw-r--r-- | arch/i386/cpu/start.S | 11 |
2 files changed, 14 insertions, 14 deletions
diff --git a/arch/i386/cpu/sc520/sc520_asm.S b/arch/i386/cpu/sc520/sc520_asm.S index 7c2de31..e0d3102 100644 --- a/arch/i386/cpu/sc520/sc520_asm.S +++ b/arch/i386/cpu/sc520/sc520_asm.S @@ -517,22 +517,11 @@ bad_ram: jmp bad_reint dram_done: + jmp *%ebp #if CONFIG_SYS_SDRAM_ECC_ENABLE - /* - * We are in the middle of an existing 'call' - Need to store the - * existing return address before making another 'call' - */ - movl %ebp, %ebx - - /* Get the memory size */ - movl $init_ecc, %ebp - jmpl get_mem_size - +.globl init_ecc init_ecc: - /* Restore the orignal return address */ - movl %ebx, %ebp - /* A nominal memory test: just a byte at each address line */ movl %eax, %ecx shrl $0x1, %ecx @@ -571,10 +560,10 @@ set_ecc: movl $ECCCTL, %edi movb $0x05, %al movb %al,(%edi) -#endif out: jmp *%ebp +#endif /* * Read and decode the sc520 DRCBENDADR MMCR and return the number of diff --git a/arch/i386/cpu/start.S b/arch/i386/cpu/start.S index cb47ce7..819274f 100644 --- a/arch/i386/cpu/start.S +++ b/arch/i386/cpu/start.S @@ -93,6 +93,17 @@ mem_init_ret: jmp get_mem_size get_mem_size_ret: +#if CONFIG_SYS_SDRAM_ECC_ENABLE + /* Skip ECC initialization if not starting from cold-reset */ + movl %ebx, %ecx + andl $GD_FLG_COLD_BOOT, %ecx + jz init_ecc_ret + mov $init_ecc_ret, %ebp + jmp init_ecc + +init_ecc_ret: +#endif + /* Check we have enough memory for stack */ movl $CONFIG_SYS_STACK_SIZE, %ecx cmpl %ecx, %eax |