diff options
Diffstat (limited to 'board/amcc/sequoia/init.S')
| -rw-r--r-- | board/amcc/sequoia/init.S | 72 |
1 files changed, 15 insertions, 57 deletions
diff --git a/board/amcc/sequoia/init.S b/board/amcc/sequoia/init.S index 5fe3af9..306c92c 100644 --- a/board/amcc/sequoia/init.S +++ b/board/amcc/sequoia/init.S @@ -20,57 +20,9 @@ */ #include <ppc_asm.tmpl> +#include <asm-ppc/mmu.h> #include <config.h> -/* General */ -#define TLB_VALID 0x00000200 -#define _256M 0x10000000 - -/* Supported page sizes */ - -#define SZ_1K 0x00000000 -#define SZ_4K 0x00000010 -#define SZ_16K 0x00000020 -#define SZ_64K 0x00000030 -#define SZ_256K 0x00000040 -#define SZ_1M 0x00000050 -#define SZ_8M 0x00000060 -#define SZ_16M 0x00000070 -#define SZ_256M 0x00000090 - -/* Storage attributes */ -#define SA_W 0x00000800 /* Write-through */ -#define SA_I 0x00000400 /* Caching inhibited */ -#define SA_M 0x00000200 /* Memory coherence */ -#define SA_G 0x00000100 /* Guarded */ -#define SA_E 0x00000080 /* Endian */ - -/* Access control */ -#define AC_X 0x00000024 /* Execute */ -#define AC_W 0x00000012 /* Write */ -#define AC_R 0x00000009 /* Read */ - -/* Some handy macros */ - -#define EPN(e) ((e) & 0xfffffc00) -#define TLB0(epn,sz) ( (EPN((epn)) | (sz) | TLB_VALID ) ) -#define TLB1(rpn,erpn) ( ((rpn)&0xfffffc00) | (erpn) ) -#define TLB2(a) ( (a)&0x00000fbf ) - -#define tlbtab_start\ - mflr r1 ;\ - bl 0f ; - -#define tlbtab_end\ - .long 0, 0, 0 ; \ -0: mflr r0 ; \ - mtlr r1 ; \ - blr ; - -#define tlbentry(epn,sz,rpn,erpn,attr)\ - .long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr) - - /************************************************************************** * TLB TABLE * @@ -87,8 +39,20 @@ tlbtab: tlbtab_start - /* - * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the + /* vxWorks needs this as first entry for the Machine Check interrupt */ + tlbentry( 0x40000000, SZ_256M, 0, 0, AC_R|AC_W|AC_X|SA_G|SA_I ) + + /* TLB-entry for DDR SDRAM (Up to 2GB) */ +#ifdef CONFIG_4xx_DCACHE + tlbentry( CFG_SDRAM_BASE, SZ_256M, CFG_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G) +#else + tlbentry( CFG_SDRAM_BASE, SZ_256M, CFG_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G|SA_I ) +#endif + + /* TLB-entry for EBC */ + tlbentry( CFG_BCSR_BASE, SZ_256M, CFG_BCSR_BASE, 1, AC_R|AC_W|AC_X|SA_G|SA_I ) + + /* BOOT_CS (FLASH) must be forth. Before relocation SA_I can be off to use the * speed up boot process. It is patched after relocation to enable SA_I */ #ifndef CONFIG_NAND_SPL @@ -97,9 +61,6 @@ tlbtab: tlbentry( CFG_NAND_BOOT_SPL_SRC, SZ_4K, CFG_NAND_BOOT_SPL_SRC, 1, AC_R|AC_W|AC_X|SA_G ) #endif - /* TLB-entry for DDR SDRAM (Up to 2GB) */ - tlbentry( CFG_SDRAM_BASE, SZ_256M, CFG_SDRAM_BASE, 0, AC_R|AC_W|AC_X|SA_G|SA_I ) - #ifdef CFG_INIT_RAM_DCACHE /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */ tlbentry( CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G ) @@ -111,9 +72,6 @@ tlbtab: tlbentry( CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 1, AC_R|AC_W|SA_G|SA_I ) tlbentry( CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 1, AC_R|AC_W|SA_G|SA_I ) - /* TLB-entry for EBC */ - tlbentry( CFG_BCSR_BASE, SZ_1K, CFG_BCSR_BASE, 1, AC_R|AC_W|AC_X|SA_G|SA_I ) - /* TLB-entry for NAND */ tlbentry( CFG_NAND_ADDR, SZ_1K, CFG_NAND_ADDR, 1, AC_R|AC_W|AC_X|SA_G|SA_I ) |