diff options
Diffstat (limited to 'arch/powerpc/cpu/ppc4xx/start.S')
| -rw-r--r-- | arch/powerpc/cpu/ppc4xx/start.S | 111 |
1 files changed, 5 insertions, 106 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S index e72c37c75b..11b55d5a56 100644 --- a/arch/powerpc/cpu/ppc4xx/start.S +++ b/arch/powerpc/cpu/ppc4xx/start.S @@ -182,16 +182,13 @@ .extern ext_bus_cntlr_init -#ifdef CONFIG_NAND_U_BOOT - .extern reconfig_tlb0 -#endif /* * Set up GOT: Global Offset Table * * Use r12 to access the GOT */ -#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD) +#if !defined(CONFIG_SPL_BUILD) START_GOT GOT_ENTRY(_GOT2_TABLE_) GOT_ENTRY(_FIXUP_TABLE_) @@ -205,22 +202,7 @@ GOT_ENTRY(__bss_end) GOT_ENTRY(__bss_start) END_GOT -#endif /* CONFIG_NAND_SPL */ - -#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) && \ - !defined(CONFIG_SPL_BUILD) - /* - * NAND U-Boot image is started from offset 0 - */ - .text -#if defined(CONFIG_440) - bl reconfig_tlb0 -#endif - GET_GOT - bl cpu_init_f /* run low-level CPU init code (from Flash) */ - bl board_init_f - /* NOTREACHED - board_init_f() does not return */ -#endif +#endif /* CONFIG_SPL_BUILD */ #if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_BOOT_FROM_XMD) /* @@ -255,9 +237,7 @@ */ #if defined(CONFIG_440) -#if !defined(CONFIG_NAND_SPL) .section .bootpg,"ax" -#endif .globl _start_440 /**************************************************************************/ @@ -511,7 +491,7 @@ tlbnx2: addi r4,r4,1 /* Next TLB */ * r3 - 1st arg to board_init(): IMMP pointer * r4 - 2nd arg to board_init(): boot flag */ -#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD) +#if !defined(CONFIG_SPL_BUILD) .text .long 0x27051956 /* U-Boot Magic Number */ .globl version_string @@ -777,9 +757,6 @@ _start: stwu r1,-8(r1) /* Save back chain and move SP */ stw r0,+12(r1) /* Save return addr (underflow vect) */ -#ifdef CONFIG_NAND_SPL - bl nand_boot_common /* will not return */ -#else #ifndef CONFIG_SPL_BUILD GET_GOT #endif @@ -787,7 +764,6 @@ _start: bl cpu_init_f /* run low-level CPU init code (from Flash) */ bl board_init_f /* NOTREACHED - board_init_f() does not return */ -#endif #endif /* CONFIG_440 */ @@ -1050,9 +1026,6 @@ _start: stw r0, +12(r1) /* Save return addr (underflow vect) */ #endif /* CONFIG_SYS_INIT_DCACHE_CS */ -#ifdef CONFIG_NAND_SPL - bl nand_boot_common /* will not return */ -#else GET_GOT /* initialize GOT access */ bl cpu_init_f /* run low-level CPU init code (from Flash) */ @@ -1060,13 +1033,11 @@ _start: bl board_init_f /* run first part of init code (from Flash) */ /* NOTREACHED - board_init_f() does not return */ -#endif /* CONFIG_NAND_SPL */ - #endif /* CONFIG_405GP || CONFIG_405 || CONFIG_405EP */ /*----------------------------------------------------------------------- */ -#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD) +#if !defined(CONFIG_SPL_BUILD) /* * This code finishes saving the registers to the exception frame * and jumps to the appropriate handler for the exception. @@ -1632,7 +1603,7 @@ __440_msr_continue: blr function_epilog(dcbz_area) #endif /* CONFIG_440 */ -#endif /* CONFIG_NAND_SPL */ +#endif /* CONFIG_SPL_BUILD */ /*------------------------------------------------------------------------------- */ /* Function: in8 */ @@ -1981,75 +1952,3 @@ pll_wait: blr function_epilog(mftlb1) #endif /* CONFIG_440 */ - -#if defined(CONFIG_NAND_SPL) -/* - * void nand_boot_relocate(dst, src, bytes) - * - * r3 = Destination address to copy code to (in SDRAM) - * r4 = Source address to copy code from - * r5 = size to copy in bytes - */ -nand_boot_relocate: - mr r6,r3 - mr r7,r4 - mflr r8 - - /* - * Copy SPL from icache into SDRAM - */ - subi r3,r3,4 - subi r4,r4,4 - srwi r5,r5,2 - mtctr r5 -..spl_loop: - lwzu r0,4(r4) - stwu r0,4(r3) - bdnz ..spl_loop - - /* - * Calculate "corrected" link register, so that we "continue" - * in execution in destination range - */ - sub r3,r7,r6 /* r3 = src - dst */ - sub r8,r8,r3 /* r8 = link-reg - (src - dst) */ - mtlr r8 - blr - -nand_boot_common: - /* - * First initialize SDRAM. It has to be available *before* calling - * nand_boot(). - */ - lis r3,CONFIG_SYS_SDRAM_BASE@h - ori r3,r3,CONFIG_SYS_SDRAM_BASE@l - bl initdram - - /* - * Now copy the 4k SPL code into SDRAM and continue execution - * from there. - */ - lis r3,CONFIG_SYS_NAND_BOOT_SPL_DST@h - ori r3,r3,CONFIG_SYS_NAND_BOOT_SPL_DST@l - lis r4,CONFIG_SYS_NAND_BOOT_SPL_SRC@h - ori r4,r4,CONFIG_SYS_NAND_BOOT_SPL_SRC@l - lis r5,CONFIG_SYS_NAND_BOOT_SPL_SIZE@h - ori r5,r5,CONFIG_SYS_NAND_BOOT_SPL_SIZE@l - bl nand_boot_relocate - - /* - * We're running from SDRAM now!!! - * - * It is necessary for 4xx systems to relocate from running at - * the original location (0xfffffxxx) to somewhere else (SDRAM - * preferably). This is because CS0 needs to be reconfigured for - * NAND access. And we can't reconfigure this CS when currently - * "running" from it. - */ - - /* - * Finally call nand_boot() to load main NAND U-Boot image from - * NAND and jump to it. - */ - bl nand_boot /* will not return */ -#endif /* CONFIG_NAND_SPL */ |