diff options
Diffstat (limited to 'cpu/mpc85xx/start.S')
| -rw-r--r-- | cpu/mpc85xx/start.S | 102 |
1 files changed, 77 insertions, 25 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index 10fe936..8fa0ff7 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -30,6 +30,7 @@ #include <config.h> #include <mpc85xx.h> +#include <timestamp.h> #include <version.h> #define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */ @@ -163,8 +164,10 @@ _start_e500: ori r0,r0,HID0_TBEN@l /* Enable Timebase */ mtspr HID0,r0 +#ifndef CONFIG_E500MC li r0,(HID1_ASTME|HID1_ABE)@l /* Addr streaming & broadcast */ mtspr HID1,r0 +#endif /* Enable Branch Prediction */ #if defined(CONFIG_BTB) @@ -172,12 +175,12 @@ _start_e500: mtspr BUCSR,r0 #endif -#if defined(CFG_INIT_DBCR) +#if defined(CONFIG_SYS_INIT_DBCR) lis r1,0xffff ori r1,r1,0xffff mtspr DBSR,r1 /* Clear all status bits */ - lis r0,CFG_INIT_DBCR@h /* DBCR0[IDM] must be set */ - ori r0,r0,CFG_INIT_DBCR@l + lis r0,CONFIG_SYS_INIT_DBCR@h /* DBCR0[IDM] must be set */ + ori r0,r0,CONFIG_SYS_INIT_DBCR@l mtspr DBCR0,r0 #endif @@ -210,11 +213,11 @@ _start_e500: lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@h ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16K)@l - lis r8,FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR, 0)@h - ori r8,r8,FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR, 0)@l + lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h + ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l - lis r9,FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h - ori r9,r9,FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l + lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h + ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l mtspr MAS0,r6 mtspr MAS1,r7 @@ -238,8 +241,8 @@ switch_as: /* Allocate Initial RAM in data cache. */ - lis r3,CFG_INIT_RAM_ADDR@h - ori r3,r3,CFG_INIT_RAM_ADDR@l + lis r3,CONFIG_SYS_INIT_RAM_ADDR@h + ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l mfspr r2, L1CFG0 andi. r2, r2, 0x1ff /* cache size * 1024 / (2 * L1 line size) */ @@ -249,17 +252,17 @@ switch_as: 1: dcbz r0,r3 dcbtls 0,r0,r3 - addi r3,r3,CFG_CACHELINE_SIZE + addi r3,r3,CONFIG_SYS_CACHELINE_SIZE bdnz 1b /* Jump out the last 4K page and continue to 'normal' start */ -#ifdef CFG_RAMBOOT +#ifdef CONFIG_SYS_RAMBOOT b _start_cont #else /* Calculate absolute address in FLASH and jump there */ /*--------------------------------------------------------------*/ - lis r3,CFG_MONITOR_BASE@h - ori r3,r3,CFG_MONITOR_BASE@l + lis r3,CONFIG_SYS_MONITOR_BASE@h + ori r3,r3,CONFIG_SYS_MONITOR_BASE@l addi r3,r3,_start_cont - _start + _START_OFFSET mtlr r3 blr @@ -272,15 +275,15 @@ _start: .globl version_string version_string: .ascii U_BOOT_VERSION - .ascii " (", __DATE__, " - ", __TIME__, ")" + .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")" .ascii CONFIG_IDENT_STRING, "\0" .align 4 .globl _start_cont _start_cont: /* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/ - lis r1,CFG_INIT_RAM_ADDR@h - ori r1,r1,CFG_INIT_SP_OFFSET@l + lis r1,CONFIG_SYS_INIT_RAM_ADDR@h + ori r1,r1,CONFIG_SYS_INIT_SP_OFFSET@l li r0,0 stwu r0,-4(r1) @@ -565,6 +568,7 @@ mck_return: /* Cache functions. */ +.globl invalidate_icache invalidate_icache: mfspr r0,L1CSR1 ori r0,r0,L1CSR1_ICFI @@ -574,6 +578,7 @@ invalidate_icache: isync blr /* entire I cache */ +.globl invalidate_dcache invalidate_dcache: mfspr r0,L1CSR0 ori r0,r0,L1CSR0_DCFI @@ -778,16 +783,16 @@ relocate_code: mr r10,r5 /* Save copy of Destination Address */ mr r3,r5 /* Destination Address */ - lis r4,CFG_MONITOR_BASE@h /* Source Address */ - ori r4,r4,CFG_MONITOR_BASE@l + lis r4,CONFIG_SYS_MONITOR_BASE@h /* Source Address */ + ori r4,r4,CONFIG_SYS_MONITOR_BASE@l lwz r5,GOT(__init_end) sub r5,r5,r4 - li r6,CFG_CACHELINE_SIZE /* Cache Line Size */ + li r6,CONFIG_SYS_CACHELINE_SIZE /* Cache Line Size */ /* * Fix GOT pointer: * - * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address + * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE) + Destination Address * * Offset: */ @@ -996,20 +1001,20 @@ trap_reloc: .globl unlock_ram_in_cache unlock_ram_in_cache: /* invalidate the INIT_RAM section */ - lis r3,(CFG_INIT_RAM_ADDR & ~31)@h - ori r3,r3,(CFG_INIT_RAM_ADDR & ~31)@l + lis r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@h + ori r3,r3,(CONFIG_SYS_INIT_RAM_ADDR & ~(CONFIG_SYS_CACHELINE_SIZE-1))@l mfspr r4,L1CFG0 andi. r4,r4,0x1ff slwi r4,r4,(10 - 1 - L1_CACHE_SHIFT) mtctr r4 1: dcbi r0,r3 - addi r3,r3,CFG_CACHELINE_SIZE + addi r3,r3,CONFIG_SYS_CACHELINE_SIZE bdnz 1b sync /* Invalidate the TLB entries for the cache */ - lis r3,CFG_INIT_RAM_ADDR@h - ori r3,r3,CFG_INIT_RAM_ADDR@l + lis r3,CONFIG_SYS_INIT_RAM_ADDR@h + ori r3,r3,CONFIG_SYS_INIT_RAM_ADDR@l tlbivax 0,r3 addi r3,r3,0x1000 tlbivax 0,r3 @@ -1019,3 +1024,50 @@ unlock_ram_in_cache: tlbivax 0,r3 isync blr + +.globl flush_dcache +flush_dcache: + mfspr r3,SPRN_L1CFG0 + + rlwinm r5,r3,9,3 /* Extract cache block size */ + twlgti r5,1 /* Only 32 and 64 byte cache blocks + * are currently defined. + */ + li r4,32 + subfic r6,r5,2 /* r6 = log2(1KiB / cache block size) - + * log2(number of ways) + */ + slw r5,r4,r5 /* r5 = cache block size */ + + rlwinm r7,r3,0,0xff /* Extract number of KiB in the cache */ + mulli r7,r7,13 /* An 8-way cache will require 13 + * loads per set. + */ + slw r7,r7,r6 + + /* save off HID0 and set DCFA */ + mfspr r8,SPRN_HID0 + ori r9,r8,HID0_DCFA@l + mtspr SPRN_HID0,r9 + isync + + lis r4,0 + mtctr r7 + +1: lwz r3,0(r4) /* Load... */ + add r4,r4,r5 + bdnz 1b + + msync + lis r4,0 + mtctr r7 + +1: dcbf 0,r4 /* ...and flush. */ + add r4,r4,r5 + bdnz 1b + + /* restore HID0 */ + mtspr SPRN_HID0,r8 + isync + + blr |