diff options
Diffstat (limited to 'cpu/mpc86xx/start.S')
| -rw-r--r-- | cpu/mpc86xx/start.S | 186 |
1 files changed, 75 insertions, 111 deletions
diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S index 75e4317..efd654c 100644 --- a/cpu/mpc86xx/start.S +++ b/cpu/mpc86xx/start.S @@ -179,20 +179,10 @@ _end_of_vectors: boot_cold: boot_warm: - - /* if this is a multi-core system we need to check which cpu - * this is, if it is not cpu 0 send the cpu to the linux reset - * vector */ -#if (CONFIG_NUM_CPUS > 1) - mfspr r0, MSSCR0 - andi. r0, r0, 0x0020 - rlwinm r0,r0,27,31,31 - mtspr PIR, r0 - beq 1f - - bl secondary_cpu_setup -#endif - + /* + * NOTE: Only Cpu 0 will ever come here. Other cores go to an + * address specified by the BPTR + */ 1: #ifdef CONFIG_SYS_RAMBOOT /* disable everything */ @@ -222,8 +212,8 @@ boot_warm: /* * Calculate absolute address in FLASH and jump there *------------------------------------------------------*/ - lis r3, CONFIG_SYS_MONITOR_BASE@h - ori r3, r3, CONFIG_SYS_MONITOR_BASE@l + lis r3, CONFIG_SYS_MONITOR_BASE_EARLY@h + ori r3, r3, CONFIG_SYS_MONITOR_BASE_EARLY@l addi r3, r3, in_flash - _start + EXC_OFF_SYS_RESET mtlr r3 blr @@ -249,9 +239,15 @@ in_flash: */ /* enable address translation */ - bl enable_addr_trans - sync + mfmsr r5 + ori r5, r5, (MSR_IR | MSR_DR) + lis r3,addr_trans_enabled@h + ori r3, r3, addr_trans_enabled@l + mtspr SPRN_SRR0,r3 + mtspr SPRN_SRR1,r5 + rfi +addr_trans_enabled: /* enable and invalidate the data cache */ /* bl l1dcache_enable */ bl dcache_enable @@ -266,6 +262,10 @@ in_flash: sync #endif +#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR) + bl setup_ccsrbar +#endif + /* set up the stack pointer in our newly created * cache-ram (r1) */ lis r1, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@h @@ -277,15 +277,6 @@ in_flash: GET_GOT /* initialize GOT access */ - /* setup the rest of the bats */ - bl setup_bats - sync - -#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR) - /* setup ccsrbar */ - bl setup_ccsrbar -#endif - /* run low-level CPU init code (from Flash) */ bl cpu_init_f sync @@ -293,7 +284,7 @@ in_flash: #ifdef RUN_DIAG /* Load PX_AUX register address in r4 */ - lis r4, 0xf810 + lis r4, PIXIS_BASE@h ori r4, r4, 0x6 /* Load contents of PX_AUX in r3 bits 24 to 31*/ lbz r3, 0(r4) @@ -365,10 +356,28 @@ invalidate_bats: * early_bats: * * Set up bats needed early on - this is usually the BAT for the - * stack-in-cache and the Flash + * stack-in-cache, the Flash, and CCSR space */ .globl early_bats early_bats: + /* IBAT 3 */ + lis r4, CONFIG_SYS_IBAT3L@h + ori r4, r4, CONFIG_SYS_IBAT3L@l + lis r3, CONFIG_SYS_IBAT3U@h + ori r3, r3, CONFIG_SYS_IBAT3U@l + mtspr IBAT3L, r4 + mtspr IBAT3U, r3 + isync + + /* DBAT 3 */ + lis r4, CONFIG_SYS_DBAT3L@h + ori r4, r4, CONFIG_SYS_DBAT3L@l + lis r3, CONFIG_SYS_DBAT3U@h + ori r3, r3, CONFIG_SYS_DBAT3U@l + mtspr DBAT3L, r4 + mtspr DBAT3U, r3 + isync + /* IBAT 5 */ lis r4, CONFIG_SYS_IBAT5L@h ori r4, r4, CONFIG_SYS_IBAT5L@l @@ -388,22 +397,42 @@ early_bats: isync /* IBAT 6 */ - lis r4, CONFIG_SYS_IBAT6L@h - ori r4, r4, CONFIG_SYS_IBAT6L@l - lis r3, CONFIG_SYS_IBAT6U@h - ori r3, r3, CONFIG_SYS_IBAT6U@l + lis r4, CONFIG_SYS_IBAT6L_EARLY@h + ori r4, r4, CONFIG_SYS_IBAT6L_EARLY@l + lis r3, CONFIG_SYS_IBAT6U_EARLY@h + ori r3, r3, CONFIG_SYS_IBAT6U_EARLY@l mtspr IBAT6L, r4 mtspr IBAT6U, r3 isync /* DBAT 6 */ - lis r4, CONFIG_SYS_DBAT6L@h - ori r4, r4, CONFIG_SYS_DBAT6L@l - lis r3, CONFIG_SYS_DBAT6U@h - ori r3, r3, CONFIG_SYS_DBAT6U@l + lis r4, CONFIG_SYS_DBAT6L_EARLY@h + ori r4, r4, CONFIG_SYS_DBAT6L_EARLY@l + lis r3, CONFIG_SYS_DBAT6U_EARLY@h + ori r3, r3, CONFIG_SYS_DBAT6U_EARLY@l mtspr DBAT6L, r4 mtspr DBAT6U, r3 isync + +#if(CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR) + /* IBAT 7 */ + lis r4, CONFIG_SYS_CCSR_DEFAULT_IBATL@h + ori r4, r4, CONFIG_SYS_CCSR_DEFAULT_IBATL@l + lis r3, CONFIG_SYS_CCSR_DEFAULT_IBATU@h + ori r3, r3, CONFIG_SYS_CCSR_DEFAULT_IBATU@l + mtspr IBAT7L, r4 + mtspr IBAT7U, r3 + isync + + /* DBAT 7 */ + lis r4, CONFIG_SYS_CCSR_DEFAULT_DBATL@h + ori r4, r4, CONFIG_SYS_CCSR_DEFAULT_DBATL@l + lis r3, CONFIG_SYS_CCSR_DEFAULT_DBATU@h + ori r3, r3, CONFIG_SYS_CCSR_DEFAULT_DBATU@l + mtspr DBAT7L, r4 + mtspr DBAT7U, r3 + isync +#endif blr .globl clear_tlbs @@ -419,15 +448,6 @@ tlblp: blt tlblp blr - .globl enable_addr_trans -enable_addr_trans: - /* enable address translation */ - mfmsr r5 - ori r5, r5, (MSR_IR | MSR_DR) - mtmsr r5 - isync - blr - .globl disable_addr_trans disable_addr_trans: /* disable address translation */ @@ -859,17 +879,20 @@ setup_ccsrbar: lis r4, CONFIG_SYS_CCSRBAR_DEFAULT@h ori r4, r4, CONFIG_SYS_CCSRBAR_DEFAULT@l - lis r5, CONFIG_SYS_CCSRBAR@h - ori r5, r5, CONFIG_SYS_CCSRBAR@l - srwi r6,r5,12 - stw r6, 0(r4) + lis r5, CONFIG_SYS_CCSRBAR_PHYS_LOW@h + ori r5, r5, CONFIG_SYS_CCSRBAR_PHYS_LOW@l + srwi r5,r5,12 + li r6, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l + rlwimi r5,r6,20,8,11 + stw r5, 0(r4) /* Store physical value of CCSR */ isync - lis r5, 0xffff - ori r5,r5,0xf000 + lis r5, TEXT_BASE@h + ori r5,r5,TEXT_BASE@l lwz r5, 0(r5) isync + /* Use VA of CCSR to do read */ lis r3, CONFIG_SYS_CCSRBAR@h lwz r5, CONFIG_SYS_CCSRBAR@l(r3) isync @@ -959,63 +982,4 @@ unlock_ram_in_cache: #endif #endif -/* If this is a multi-cpu system then we need to handle the - * 2nd cpu. The assumption is that the 2nd cpu is being - * held in boot holdoff mode until the 1st cpu unlocks it - * from Linux. We'll do some basic cpu init and then pass - * it to the Linux Reset Vector. - * Sri: Much of this initialization is not required. Linux - * rewrites the bats, and the sprs and also enables the L1 cache. - */ -#if (CONFIG_NUM_CPUS > 1) -.globl secondary_cpu_setup -secondary_cpu_setup: - /* Do only core setup on all cores except cpu0 */ - bl invalidate_bats - sync - bl enable_ext_addr - -#ifdef CONFIG_SYS_L2 - /* init the L2 cache */ - addis r3, r0, L2_INIT@h - ori r3, r3, L2_INIT@l - sync - mtspr l2cr, r3 -#ifdef CONFIG_ALTIVEC - dssall -#endif - /* invalidate the L2 cache */ - bl l2cache_invalidate - sync -#endif - /* enable and invalidate the data cache */ - bl dcache_enable - sync - - /* enable and invalidate the instruction cache*/ - bl icache_enable - sync - - /* TBEN in HID0 */ - mfspr r4, HID0 - oris r4, r4, 0x0400 - mtspr HID0, r4 - sync - isync - - /* MCP|SYNCBE|ABE in HID1 */ - mfspr r4, HID1 - oris r4, r4, 0x8000 - ori r4, r4, 0x0C00 - mtspr HID1, r4 - sync - isync - - lis r3, CONFIG_LINUX_RESET_VEC@h - ori r3, r3, CONFIG_LINUX_RESET_VEC@l - mtlr r3 - blr - - /* Never Returns, Running in Linux Now */ -#endif |