Add ARM920T NAND flash booting.

checkpatch.pl shows that all things are fine.

total: 0 errors, 0 warnings, 70 lines checked

0002-ARM920T-NAND-flash-booting.patch has no obvious style problems and is ready for submission.

========================================================= Signed-off-by: Hui.Tang zetalabs@gmail.com --- cpu/arm920t/start.S | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/cpu/arm920t/start.S b/cpu/arm920t/start.S index 114427a..9b08e3c 100644 --- a/cpu/arm920t/start.S +++ b/cpu/arm920t/start.S @@ -38,6 +38,7 @@

.globl _start _start: b start_code +#ifndef CONFIG_NAND_SPL ldr pc, _undefined_instruction ldr pc, _software_interrupt ldr pc, _prefetch_abort @@ -53,7 +54,13 @@ _data_abort: .word data_abort _not_used: .word not_used _irq: .word irq _fiq: .word fiq +_pad: .word 0x12345678 /* now 16*4=64 */ +#else + . = _start + 64 +#endif

+.global _end_vect +_end_vect: .balignl 16,0xdeadbeef

@@ -197,7 +204,11 @@ copy_loop:

/* Set up the stack */ stack_setup: +#ifndef CONFIG_NAND_SPL ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */ +#else + ldr r0, =(CONFIG_SYS_UBOOT_BASE + CONFIG_SYS_UBOOT_SIZE) +#endif sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */ sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */ #ifdef CONFIG_USE_IRQ @@ -215,9 +226,14 @@ clbss_l:str r2, [r0] /* clear loop... */ cmp r0, r1 ble clbss_l

+#ifndef CONFIG_NAND_SPL ldr pc, _start_armboot

_start_armboot: .word start_armboot +#else + b nand_boot +/* .word nand_boot */ +#endif

/* @@ -234,6 +250,7 @@ _start_armboot: .word start_armboot

#ifndef CONFIG_SKIP_LOWLEVEL_INIT cpu_init_crit: +#ifndef CONFIG_NAND_SPL /* * flush v4 I/D caches */ @@ -250,6 +267,7 @@ cpu_init_crit: orr r0, r0, #0x00000002 @ set bit 2 (A) Align orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache mcr p15, 0, r0, c1, c0, 0 +#endif /* CONFIG_NAND_SPL */

/* * before relocating, we have to setup RAM timing @@ -264,6 +282,7 @@ cpu_init_crit: mov pc, lr #endif /* CONFIG_SKIP_LOWLEVEL_INIT */

+#ifndef CONFIG_NAND_SPL /* ************************************************************************* * @@ -434,3 +453,4 @@ fiq: bl do_fiq

#endif +#endif /* CONFIG_NAND_SPL */