* [U-Boot-Users] Support Big Endian for ARM926ejs
@ 2007-10-25 13:28 longbow
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From: longbow @ 2007-10-25 13:28 UTC (permalink / raw)
To: u-boot
Hello
I'm porting u-boot for my board which using ARM926ejs and big endian mode
My GNU toolchain is for big endian, I use it to build u-boot-1.2.0
For build, do some modification
u-boot.lds
/*OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")*/
OUTPUT_FORMAT("elf32-bigarm", "elf32-bigarm", "elf32-bigarm ")
Start.S
cpu_init_crit:
.....
/*
* disable MMU stuff and caches
*/
mrc p15, 0, r0, c1, c0, 0
bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */
/*bic r0, r0, #0x00000087 clear bits 7, 2:0 (B--- -CAM) */
/*orr r0, r0, #0x00000002 set bit 2 (A) Align */
bic r0, r0, #0x00000007 /* clear bits 2:0 (--- -CAM) */
orr r0, r0, #0x00000082 /* set bit 7, 2 (Big)(A) Align */
orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */
mcr p15, 0, r0, c1, c0, 0
....
For porting successfully, I want to confirm the source code of u-boot for
arm support big endian ?
Thanks
Longbow
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2007-10-25 13:28 [U-Boot-Users] Support Big Endian for ARM926ejs longbow
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