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| author | wdenk <wdenk> | 2003-05-31 18:35:21 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-05-31 18:35:21 +0000 |
| commit | 7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed (patch) | |
| tree | 5c273df9c5efa7b1b6a4ca88904e48039ef591e8 /board/sc520_cdp/sc520_cdp_asm16.S | |
| parent | 3b57fe0a70b903f4db66c558bb9828bc58acf06b (diff) | |
| download | u-boot-imx-7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed.zip u-boot-imx-7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed.tar.gz u-boot-imx-7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed.tar.bz2 | |
* Patch by Marc Singer, 29 May 2003:
Fixed rarp boot method for IA32 and other little-endian CPUs.
* Patch by Marc Singer, 28 May 2003:
Added port I/O commands.
* Patch by Matthew McClintock, 28 May 2003
- cpu/mpc824x/start.S: fix relocation code when booting from RAM
- minor patches for utx8245
* Patch by Daniel Engström, 28 May 2003:
x86 update
* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
add nand flash support to SXNI855T configuration
fix/extend nand flash support:
- fix 'nand erase' command so does not erase bad blocks
- fix 'nand write' command so does not write to bad blocks
- fix nand_probe() so handles no flash detected properly
- add doc/README.nand
- add .jffs2 and .oob options to nand read/write
- add 'nand bad' command to list bad blocks
- add 'clean' option to 'nand erase' to write JFFS2 clean markers
- make NAND read/write faster
* Patch by Rune Torgersen, 23 May 2003:
Update for MPC8266ADS board
Diffstat (limited to 'board/sc520_cdp/sc520_cdp_asm16.S')
| -rw-r--r-- | board/sc520_cdp/sc520_cdp_asm16.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/board/sc520_cdp/sc520_cdp_asm16.S b/board/sc520_cdp/sc520_cdp_asm16.S index a3cadcf..0e0b0c0 100644 --- a/board/sc520_cdp/sc520_cdp_asm16.S +++ b/board/sc520_cdp/sc520_cdp_asm16.S @@ -60,3 +60,25 @@ board_init16: /* the return address is tored in bp */ jmp *%bp + +.section .bios, "ax" +.code16 +.globl realmode_reset +realmode_reset: + /* Alias MMCR to 0xdf000 */ + movw $0xfffc, %dx + movl $0x800df0cb, %eax + outl %eax, %dx + + /* Set ds to point to MMCR alias */ + movw $0xdf00, %ax + movw %ax, %ds + + /* issue software reset thorugh MMCR */ + movl $0xd72, %edi + movb $0x01, %al + movb %al, (%di) + +1: hlt + jmp 1 + |