diff options
Diffstat (limited to 'board/bmw/early_init.S')
| -rw-r--r-- | board/bmw/early_init.S | 1170 |
1 files changed, 0 insertions, 1170 deletions
diff --git a/board/bmw/early_init.S b/board/bmw/early_init.S deleted file mode 100644 index 63c29d500f..0000000000 --- a/board/bmw/early_init.S +++ /dev/null @@ -1,1170 +0,0 @@ -#include <ppc_asm.tmpl> -#include <mpc824x.h> -#include <ppc_defs.h> -#include <asm/cache.h> -#include <asm/mmu.h> - -#define USE_V2_INIT 1 /* Jimmy Blair's initialization. */ - - -/* - * Initialize the MMU using BAT entries and hardwired TLB - * This obviates the need for any code in cpu_init_f which - * configures the BAT registers. -*/ -#define MEMORY_MGMT_MSR_BITS (MSR_DR | MSR_IR) /* Data and Inst Relocate */ - .global iommu_setup - /* Initialize IO/MMU mappings via BAT method Ch. 7, - * PPC Programming Reference - */ -iommu_setup: - -/* initialize the BAT registers (SPRs 528 - 543 */ -#define mtibat0u(x) mtspr 528,(x) /* SPR 528 (IBAT0U) */ -#define mtibat0l(x) mtspr 529,(x) /* SPR 529 (IBAT0L) */ -#define mtibat1u(x) mtspr 530,(x) /* SPR 530 (IBAT1U) */ -#define mtibat1l(x) mtspr 531,(x) /* SPR 531 (IBAT1L) */ -#define mtibat2u(x) mtspr 532,(x) /* SPR 532 (IBAT2U) */ -#define mtibat2l(x) mtspr 533,(x) /* SPR 533 (IBAT2L) */ -#define mtibat3u(x) mtspr 534,(x) /* SPR 534 (IBAT3U) */ -#define mtibat3l(x) mtspr 535,(x) /* SPR 535 (IBAT3L) */ -#define mtdbat0u(x) mtspr 536,(x) /* SPR 536 (DBAT0U) */ -#define mtdbat0l(x) mtspr 537,(x) /* SPR 537 (DBAT0L) */ -#define mtdbat1u(x) mtspr 538,(x) /* SPR 538 (DBAT1U) */ -#define mtdbat1l(x) mtspr 539,(x) /* SPR 539 (DBAT1L) */ -#define mtdbat2u(x) mtspr 540,(x) /* SPR 540 (DBAT2U) */ -#define mtdbat2l(x) mtspr 541,(x) /* SPR 541 (DBAT2L) */ -#define mtdbat3u(x) mtspr 542,(x) /* SPR 542 (DBAT3U) */ -#define mtdbat3l(x) mtspr 543,(x) /* SPR 543 (DBAT3L) */ - - -/* PowerPC processors do not necessarily initialize the BAT - registers on power-up or reset. So they are in an unknown - state. Before programming the BATs for the first time, all - BAT registers MUST have their Vs and Vp bits cleared in the - upper BAT half in order to avoid possibly having 2 BATs - valid and mapping the same memory region. - - The reason for this is that, even with address translation - disabled, multiple BAT hits for an address are treated as - programming errors and can cause unpredictable results. - - It is up to the software to make sure it never has 2 IBAT - mappings or 2 DBAT mappings that are valid for the same - addresses. It is not necessary to perform this code - sequence every time the BATs are programmed, only when - there is a possibility that there may be overlapping BAT - entries. - - When programming the BATs in non-reset scenarios, even if - you are sure that your new mapping will not temporarily - create overlapping regions, it is still a wise idea to - invalidate a BAT entry by setting its upper BAT register to - all 0's before programming it. This will avoid having a - BAT marked valid that is in an unknown or transient state -*/ - - addis r5,0,0x0000 - mtibat0u(r5) - mtibat0l(r5) - mtibat1u(r5) - mtibat1l(r5) - mtibat2u(r5) - mtibat2l(r5) - mtibat3u(r5) - mtibat3l(r5) - mtdbat0u(r5) - mtdbat0l(r5) - mtdbat1u(r5) - mtdbat1l(r5) - mtdbat2u(r5) - mtdbat2l(r5) - mtdbat3u(r5) - mtdbat3l(r5) - isync - -/* - * Set up I/D BAT0 - */ - lis r4, CONFIG_SYS_DBAT0L@h - ori r4, r4, CONFIG_SYS_DBAT0L@l - lis r3, CONFIG_SYS_DBAT0U@h - ori r3, r3, CONFIG_SYS_DBAT0U@l - - mtdbat0l(r4) - isync - mtdbat0u(r3) - isync - sync - - lis r4, CONFIG_SYS_IBAT0L@h - ori r4, r4, CONFIG_SYS_IBAT0L@l - lis r3, CONFIG_SYS_IBAT0U@h - ori r3, r3, CONFIG_SYS_IBAT0U@l - - isync - mtibat0l(r4) - isync - mtibat0u(r3) - isync - -/* - * Set up I/D BAT1 - */ - lis r4, CONFIG_SYS_IBAT1L@h - ori r4, r4, CONFIG_SYS_IBAT1L@l - lis r3, CONFIG_SYS_IBAT1U@h - ori r3, r3, CONFIG_SYS_IBAT1U@l - - isync - mtibat1l(r4) - isync - mtibat1u(r3) - isync - mtdbat1l(r4) - isync - mtdbat1u(r3) - isync - sync - -/* - * Set up I/D BAT2 - */ - lis r4, CONFIG_SYS_IBAT2L@h - ori r4, r4, CONFIG_SYS_IBAT2L@l - lis r3, CONFIG_SYS_IBAT2U@h - ori r3, r3, CONFIG_SYS_IBAT2U@l - - isync - mtibat2l(r4) - isync - mtibat2u(r3) - isync - mtdbat2l(r4) - isync - mtdbat2u(r3) - isync - sync - -/* - * Setup I/D BAT3 - */ - 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 - - isync - mtibat3l(r4) - isync - mtibat3u(r3) - isync - mtdbat3l(r4) - isync - mtdbat3u(r3) - isync - sync - - -/* - * Invalidate all 64 TLB's - */ - lis r3, 0 - mtctr r3 - lis r5, 4 - -tlblp: - tlbie r3 - sync - addi r3, r3, 0x1000 - cmplw r3, r5 - blt tlblp - - sync - -/* - * Enable Data Translation - */ - lis r4, MEMORY_MGMT_MSR_BITS@h - ori r4, r4, MEMORY_MGMT_MSR_BITS@l - mfmsr r3 - or r3, r4, r3 - mtmsr r3 - isync - sync - - blr - - -#ifdef USE_V2_INIT -/* #define USER_I_CACHE_ENABLE 1*/ /* Fast rom boots */ -/* Macro for hiadjust and lo */ -#define HIADJ(arg) arg@ha -#define HI(arg) arg@h -#define LO(arg) arg@l - -#undef LOADPTR -#define LOADPTR(reg,const32) \ - addis reg,r0,HIADJ(const32); addi reg,reg,LO(const32) - -.globl early_init_f - -early_init_f: -/* MPC8245/BMW CPCI System Init - * Jimmy Blair, Broadcom Corp, 2002. - */ - mflr r11 - /* Zero-out registers */ - - addis r0,r0,0 - mtspr SPRG0,r0 - mtspr SPRG1,r0 - mtspr SPRG2,r0 - mtspr SPRG3,r0 - - /* Set MPU/MSR to a known state. Turn on FP */ - - LOADPTR (r3, MSR_FP) - sync - mtmsr r3 - isync - - /* Init the floating point control/status register */ - - mtfsfi 7,0x0 - mtfsfi 6,0x0 - mtfsfi 5,0x0 - mtfsfi 4,0x0 - mtfsfi 3,0x0 - mtfsfi 2,0x0 - mtfsfi 1,0x0 - mtfsfi 0,0x0 - isync - - /* Set MPU/MSR to a known state. Turn off FP */ - -#if 1 /* Turn off floating point (remove to keep FP on) */ - andi. r3, r3, 0 - sync - mtmsr r3 - isync -#endif - - /* Init the Segment registers */ - - andi. r3, r3, 0 - isync - mtsr 0,r3 - isync - mtsr 1,r3 - isync - mtsr 2,r3 - isync - mtsr 3,r3 - isync - mtsr 4,r3 - isync - mtsr 5,r3 - isync - mtsr 6,r3 - isync - mtsr 7,r3 - isync - mtsr 8,r3 - isync - mtsr 9,r3 - isync - mtsr 10,r3 - isync - mtsr 11,r3 - isync - mtsr 12,r3 - isync - mtsr 13,r3 - isync - mtsr 14,r3 - isync - mtsr 15,r3 - isync - - /* Turn off data and instruction cache control bits */ - - mfspr r3, HID0 - isync - rlwinm r4, r3, 0, 18, 15 /* r4 has ICE and DCE bits cleared */ - sync - isync - mtspr HID0, r4 /* HID0 = r4 */ - isync - - /* Get cpu type */ - - mfspr r28, PVR - rlwinm r28, r28, 16, 16, 31 - - /* invalidate the MPU's data/instruction caches */ - - lis r3, 0x0 - cmpli 0, 0, r28, CPU_TYPE_603 - beq cpuIs603 - cmpli 0, 0, r28, CPU_TYPE_603E - beq cpuIs603 - cmpli 0, 0, r28, CPU_TYPE_603P - beq cpuIs603 - cmpli 0, 0, r28, CPU_TYPE_604R - bne cpuNot604R - -cpuIs604R: - lis r3, 0x0 - mtspr HID0, r3 /* disable the caches */ - isync - ori r4, r4, 0x0002 /* disable BTAC by setting bit 30 */ - -cpuNot604R: - ori r3, r3, (HID0_ICFI |HID0_DCI) - -cpuIs603: - ori r3, r3, (HID0_ICE | HID0_DCE) - or r4, r4, r3 /* set bits */ - sync - isync - mtspr HID0, r4 /* HID0 = r4 */ - andc r4, r4, r3 /* clear bits */ - isync - cmpli 0, 0, r28, CPU_TYPE_604 - beq cpuIs604 - cmpli 0, 0, r28, CPU_TYPE_604E - beq cpuIs604 - cmpli 0, 0, r28, CPU_TYPE_604R - beq cpuIs604 - mtspr HID0, r4 - isync - -#ifdef USER_I_CACHE_ENABLE - b instCacheOn603 -#else - b cacheEnableDone -#endif - -cpuIs604: - LOADPTR (r5, 0x1000) /* loop count, 0x1000 */ - mtspr CTR, r5 -loopDelay: - nop - bdnz loopDelay - isync - mtspr HID0, r4 - isync - - /* turn the Instruction cache ON for faster FLASH ROM boots */ - -#ifdef USER_I_CACHE_ENABLE - - ori r4, r4, (HID0_ICE | HID0_ICFI) - isync /* Synchronize for ICE enable */ - b writeReg4 -instCacheOn603: - ori r4, r4, (HID0_ICE | HID0_ICFI) - rlwinm r3, r4, 0, 21, 19 /* clear the ICFI bit */ - - /* - * The setting of the instruction cache enable (ICE) bit must be - * preceded by an isync instruction to prevent the cache from being - * enabled or disabled while an instruction access is in progress. - */ - isync -writeReg4: - mtspr HID0, r4 /* Enable Instr Cache & Inval cache */ - cmpli 0, 0, r28, CPU_TYPE_604 - beq cacheEnableDone - cmpli 0, 0, r28, CPU_TYPE_604E - beq cacheEnableDone - - mtspr HID0, r3 /* using 2 consec instructions */ - /* PPC603 recommendation */ -#endif -cacheEnableDone: - - /* Detect map A or B */ - - addis r5,r0, HI(CHRP_REG_ADDR) - addis r6,r0, HI(CHRP_REG_DATA) - LOADPTR (r7, KAHLUA_ID) /* Kahlua PCI controller ID */ - LOADPTR (r8, BMC_BASE) - - stwbrx r8,0,(r5) - lwbrx r3,0,(r6) /* Store read value to r3 */ - cmp 0,0,r3,r7 - beq cr0, X4_KAHLUA_START - - /* It's not an 8240, is it an 8245? */ - - LOADPTR (r7, KAHLUA2_ID) /* Kahlua PCI controller ID */ - cmp 0,0,r3,r7 - beq cr0, X4_KAHLUA_START - - /* Save the PCI controller type in r7 */ - mr r7, r3 - - LOADPTR (r5, PREP_REG_ADDR) - LOADPTR (r6, PREP_REG_DATA) - -X4_KAHLUA_START: - /* MPC8245 changes begin here */ - LOADPTR (r3, MPC107_PCI_CMD) /* PCI command reg */ - stwbrx r3,0,r5 - li r4, 6 /* Command register value */ - sthbrx r4, 0, r6 - - LOADPTR (r3, MPC107_PCI_STAT) /* PCI status reg */ - stwbrx r3,0,r5 - li r4, -1 /* Write-to-clear all bits */ - li r3, 2 /* PCI_STATUS is at +2 offset */ - sthbrx r4, r3, r6 - - /*-------PROC_INT1_ADR */ - - LOADPTR (r3, PROC_INT1_ADR) /* Processor I/F Config 1 reg. */ - stwbrx r3,0,r5 - LOADPTR (r4, 0xff141b98) - stwbrx r4,0,r6 - - /*-------PROC_INT2_ADR */ - - LOADPTR (r3, PROC_INT2_ADR) /* Processor I/F Config 2 reg. */ - stwbrx r3,0,r5 - lis r4, 0x2000 /* Flush PCI config writes */ - stwbrx r4,0,r6 - - LOADPTR (r9, KAHLUA2_ID) - cmpl 0, 0, r7, r9 - bne L1not8245 - - /* MIOCR1 -- turn on bit for DLL delay */ - - LOADPTR (r3, MIOCR1_ADR_X) - stwbrx r3,0,r5 - li r4, 0x04 - stb r4, MIOCR1_SHIFT(r6) - - /* For the MPC8245, set register 77 to %00100000 (see Errata #15) */ - /* SDRAM_CLK_DEL (0x77)*/ - - LOADPTR (r3, MIOCR2_ADR_X) - stwbrx r3,0,r5 - li r4, 0x10 - stb r4, MIOCR2_SHIFT(r6) - - /* PMCR2 -- set PCI hold delay to <10>b for 33 MHz */ - - LOADPTR (r3, PMCR2_ADR_X) - stwbrx r3,0,r5 - li r4, 0x20 - stb r4, PMCR2_SHIFT(r6) - - /* Initialize EUMBBAR early since 8245 has internal UART in EUMB */ - - LOADPTR (r3, EUMBBAR) - stwbrx r3,0,r5 - LOADPTR (r4, CONFIG_SYS_EUMB_ADDR) - stwbrx r4,0,r6 - -L1not8245: - - /* Toggle the DLL reset bit in AMBOR */ - - LOADPTR (r3, AMBOR) - stwbrx r3,0,r5 - lbz r4, 0(r6) - - andi. r4, r4, 0xdf - stb r4, 0(r6) /* Clear DLL_RESET */ - sync - - ori r4, r4, 0x20 /* Set DLL_RESET */ - stb r4, 0(r6) - sync - - andi. r4, r4, 0xdf - stb r4, 0(r6) /* Clear DLL_RESET */ - - - /* Enable RCS2, use supplied timings */ - LOADPTR (r3, ERCR1) - stwbrx r3,0,r5 - LOADPTR (r4, 0x80408000) - stwbrx r4,0,r6 - - /* Disable RCS3 parameters */ - LOADPTR (r3, ERCR2) - stwbrx r3,0,r5 - LOADPTR (r4, 0x00000000) - stwbrx r4,0,r6 - - /* RCS3 at 0x70000000, 64KBytes */ - LOADPTR (r3, ERCR2) - stwbrx r3,0,r5 - LOADPTR (r4, 0x00000004) - stwbrx r4,0,r6 - - /*-------MCCR1 */ - -#ifdef INCLUDE_ECC -#define MC_ECC 1 -#else /* INCLUDE_ECC */ -#define MC_ECC 0 -#endif /* INCLUDE_ECC */ - -#define MC1_ROMNAL 8 /* 0-15 */ -#define MC1_ROMFAL 11 /* 0-31 */ -#define MC1_DBUS_SIZE 0 /* 0-3, read only */ -#define MC1_BURST 0 /* 0-1 */ -#define MC1_MEMGO 0 /* 0-1 */ -#define MC1_SREN 1 /* 0-1 */ -#define MC1_RAM_TYPE 0 /* 0-1 */ -#define MC1_PCKEN MC_ECC /* 0-1 */ -#define MC1_BANKBITS 0x5555 /* 2 bits/bank 7-0 */ - - LOADPTR (r3, MEM_CONT1_ADR) /* Set MCCR1 (F0) */ - stwbrx r3,0,r5 - LOADPTR(r4, \ - MC1_ROMNAL << 28 | MC1_ROMFAL << 23 | \ - MC1_DBUS_SIZE << 21 | MC1_BURST << 20 | \ - MC1_MEMGO << 19 | MC1_SREN << 18 | \ - MC1_RAM_TYPE << 17 | MC1_PCKEN << 16 ) - li r3, MC1_BANKBITS - cmpl 0, 0, r7, r9 /* Check for Kahlua2 */ - bne BankBitsAdd - cmpli 0, 0, r3, 0x5555 - beq K2BankBitsHack /* On 8245, 5555 ==> 0 */ -BankBitsAdd: - ori r4, r3, 0 -K2BankBitsHack: - stwbrx r4, 0, r6 - - /*------- MCCR2 */ - -#define MC2_TS_WAIT_TIMER 0 /* 0-7 */ -#define MC2_ASRISE 8 /* 0-15 */ -#define MC2_ASFALL 4 /* 0-15 */ -#define MC2_INLINE_PAR_NOT_ECC 0 /* 0-1 */ -#define MC2_WRITE_PARITY_CHK_EN MC_ECC /* 0-1 */ -#define MC2_INLRD_PARECC_CHK_EN MC_ECC /* 0-1 */ -#define MC2_ECC_EN 0 /* 0-1 */ -#define MC2_EDO 0 /* 0-1 */ -/* -* N.B. This refresh interval looks good up to 85 MHz with Hynix SDRAM. -* May need to be decreased for 100 MHz -*/ -#define MC2_REFINT 0x3a5 /* 0-0x3fff */ -#define MC2_RSV_PG 0 /* 0-1 */ -#define MC2_RMW_PAR MC_ECC /* 0-1 */ - - LOADPTR (r3, MEM_CONT2_ADR) /* Set MCCR2 (F4) */ - stwbrx r3,0,r5 - LOADPTR(r4, \ - MC2_TS_WAIT_TIMER << 29 | MC2_ASRISE << 25 | \ - MC2_ASFALL << 21 | MC2_INLINE_PAR_NOT_ECC << 20 | \ - MC2_WRITE_PARITY_CHK_EN << 19 | \ - MC2_INLRD_PARECC_CHK_EN << 18 | \ - MC2_ECC_EN << 17 | MC2_EDO << 16 | \ - MC2_REFINT << 2 | MC2_RSV_PG << 1 | MC2_RMW_PAR) - cmpl 0, 0, r7, r9 /* Check for Kahlua2 */ - bne notK2 - /* clear Kahlua2 reserved bits */ - LOADPTR (r3, 0xfffcffff) - and r4, r4, r3 -notK2: - stwbrx r4,0,r6 - - /*------- MCCR3 */ - -#define MC_BSTOPRE 0x079 /* 0-0x7ff */ - -#define MC3_BSTOPRE_U (MC_BSTOPRE >> 4 & 0xf) -#define MC3_REFREC 8 /* 0-15 */ -#define MC3_RDLAT (4+MC_ECC) /* 0-15 */ -#define MC3_CPX 0 /* 0-1 */ -#define MC3_RAS6P 0 /* 0-15 */ -#define MC3_CAS5 0 /* 0-7 */ -#define MC3_CP4 0 /* 0-7 */ -#define MC3_CAS3 0 /* 0-7 */ -#define MC3_RCD2 0 /* 0-7 */ -#define MC3_RP1 0 /* 0-7 */ - - LOADPTR (r3, MEM_CONT3_ADR) /* Set MCCR3 (F8) */ - stwbrx r3,0,r5 - LOADPTR(r4, \ - MC3_BSTOPRE_U << 28 | MC3_REFREC << 24 | \ - MC3_RDLAT << 20 | MC3_CPX << 19 | \ - MC3_RAS6P << 15 | MC3_CAS5 << 12 | MC3_CP4 << 9 | \ - MC3_CAS3 << 6 | MC3_RCD2 << 3 | MC3_RP1) - cmpl 0, 0, r7, r9 /* Check for Kahlua2 */ - bne notK2b - /* clear Kahlua2 reserved bits */ - LOADPTR (r3, 0xff000000) - and r4, r4, r3 -notK2b: - stwbrx r4,0,r6 - - /*------- MCCR4 */ - -#define MC4_PRETOACT 3 /* 0-15 */ -#define MC4_ACTOPRE 5 /* 0-15 */ -#define MC4_WMODE 0 /* 0-1 */ -#define MC4_INLINE MC_ECC /* 0-1 */ -#define MC4_REGISTERED (1-MC_ECC) /* 0-1 */ -#define MC4_BSTOPRE_UU (MC_BSTOPRE >> 8 & 3) -#define MC4_REGDIMM 0 /* 0-1 */ -#define MC4_SDMODE_CAS 2 /* 0-7 */ -#define MC4_DBUS_RCS1 1 /* 0-1, 8-bit */ -#define MC4_SDMODE_WRAP 0 /* 0-1 */ -#define MC4_SDMODE_BURST 2 /* 0-7 */ -#define MC4_ACTORW 3 /* 0-15 */ -#define MC4_BSTOPRE_L (MC_BSTOPRE & 0xf) - - LOADPTR (r3, MEM_CONT4_ADR) /* Set MCCR4 (FC) */ - stwbrx r3,0,r5 - LOADPTR(r4, \ - MC4_PRETOACT << 28 | MC4_ACTOPRE << 24 | \ - MC4_WMODE << 23 | MC4_INLINE << 22 | \ - MC4_REGISTERED << 20 | MC4_BSTOPRE_UU << 18 | \ - MC4_DBUS_RCS1 << 17 | \ - MC4_REGDIMM << 15 | MC4_SDMODE_CAS << 12 | \ - MC4_SDMODE_WRAP << 11 | MC4_SDMODE_BURST << 8 | \ - MC4_ACTORW << 4 | MC4_BSTOPRE_L) - cmpl 0, 0, r7, r9 /* Check for Kahlua 2 */ - bne notK2c - /* Turn on Kahlua2 extended ROM space */ - LOADPTR (r3, 0x00200000) - or r4, r4, r3 -notK2c: - stwbrx r4,0,r6 - -#ifdef INCLUDE_ECC - /*------- MEM_ERREN1 */ - - LOADPTR (r3, MEM_ERREN1_ADR) /* Set MEM_ERREN1 (c0) */ - stwbrx r3,0,r5 - lwbrx r4,0,r6 - ori r4,r4,4 /* Set MEM_PERR_EN */ - stwbrx r4,0,r6 -#endif /* INCLUDE_ECC */ - - /*------- MSAR/MEAR */ - - LOADPTR (r3, MEM_START1_ADR) /* Set MSAR1 (80) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0xc0804000) - stwbrx r4,0,r6 - - LOADPTR (r3, MEM_START2_ADR) /* Set MSAR2 (84) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0xc0804000) - stwbrx r4,0,r6 - - LOADPTR (r3, XMEM_START1_ADR) /* Set MESAR1 (88) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0x00000000) - stwbrx r4,0,r6 - - LOADPTR (r3, XMEM_START2_ADR) /* Set MESAR2 (8c) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0x01010101) - stwbrx r4,0,r6 - - LOADPTR (r3, MEM_END1_ADR) /* Set MEAR1 (90) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0xffbf7f3f) - stwbrx r4,0,r6 - - LOADPTR (r3, MEM_END2_ADR) /* Set MEAR2 (94) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0xffbf7f3f) - stwbrx r4,0,r6 - - LOADPTR (r3, XMEM_END1_ADR) /* MEEAR1 (98) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0x00000000) - stwbrx r4,0,r6 - - LOADPTR (r3, XMEM_END2_ADR) /* MEEAR2 (9c) */ - stwbrx r3,0,r5 - LOADPTR (r4, 0x01010101) - stwbrx r4,0,r6 - - /*-------ODCR */ - - LOADPTR (r3, ODCR_ADR_X) /* Set ODCR */ - stwbrx r3,0,r5 - - li r4, 0x7f - stb r4, ODCR_SHIFT(r6) /* ODCR is at +3 offset */ - - /*-------MBEN */ - - LOADPTR (r3, MEM_EN_ADR) /* Set MBEN (a0) */ - stwbrx r3,0,r5 - li r4, 0x01 /* Enable bank 0 */ - stb r4, 0(r6) /* MBEN is at +0 offset */ - -#if 0 /* Jimmy: I think page made is broken */ - /*-------PGMAX */ - - LOADPTR (r3, MPM_ADR_X) - stwbrx r3,0,r5 - li r4, 0x32 - stb r4, MPM_SHIFT(r6) /* PAGE_MODE is at +3 offset */ -#endif - - /* Wait before initializing other registers */ - - lis r4,0x0001 - mtctr r4 - -KahluaX4wait200us: - bdnz KahluaX4wait200us - - /* Set MEMGO bit */ - - LOADPTR (r3, MEM_CONT1_ADR) /* MCCR1 (F0) |= PGMAX */ - stwbrx r3,0,r5 - lwbrx r4,0,r6 /* old MCCR1 */ - oris r4,r4,0x0008 /* MEMGO=1 */ - stwbrx r4, 0, r6 - - /* Wait again */ - - addis r4,r0,0x0002 - ori r4,r4,0xffff - - mtctr r4 - -KahluaX4wait8ref: - bdnz KahluaX4wait8ref - - sync - eieio - mtlr r11 - blr - -#else /* USE_V2_INIT */ - - -/* U-Boot works, but memory will not run reliably for all address ranges. - * Early U-Boot Working init, but 2.4.19 kernel will crash since memory is not - * initialized correctly. Could work if debugged. - */ -/* PCI Support routines */ - - .globl __pci_config_read_32 -__pci_config_read_32: - lis r4, 0xfec0 - stwbrx r3, r0, r4 - sync - lis r4, 0xfee0 - lwbrx r3, 0, r4 - blr - .globl __pci_config_read_16 -__pci_config_read_16: - lis r4, 0xfec0 - andi. r5, r3, 2 - stwbrx r3, r0, r4 - sync - oris r4, r5, 0xfee0 - lhbrx r3, r0, r4 - blr - .globl __pci_config_read_8 -__pci_config_read_8: - lis r4, 0xfec0 - andi. r5, r3, 3 - stwbrx r3, r0, r4 - sync - oris r4, r5, 0xfee0 - lbz r3, 0(4) - blr - .globl __pci_config_write_32 -__pci_config_write_32: - lis r5, 0xfec0 - stwbrx r3, r0, r5 - sync - lis r5, 0xfee0 - stwbrx r4, r0, r5 - sync - blr - .globl __pci_config_write_16 -__pci_config_write_16: - lis r5, 0xfec0 - andi. r6, r3, 2 - stwbrx r3, r0, 5 - sync - oris r5, r6, 0xfee0 - sthbrx r4, r0, r5 - sync - blr - .globl __pci_config_write_8 -__pci_config_write_8: - lis r5, 0xfec0 - andi. r6, r3, 3 - stwbrx r3, r0, r5 - sync - oris r5, r6, 0xfee0 - stb r4, 0(r5) - sync - blr - .globl in_8 -in_8: - oris r3, r3, 0xfe00 - lbz r3,0(r3) - blr - .globl in_16 -in_16: - oris r3, r3, 0xfe00 - lhbrx r3, 0, r3 - blr - .globl in_16_ne -in_16_ne: - oris r3, r3, 0xfe00 - lhzx r3, 0, r3 - blr - .globl in_32 -in_32: - oris r3, r3, 0xfe00 - lwbrx r3, 0, r3 - blr - .globl out_8 -out_8: - oris r3, r3, 0xfe00 - stb r4, 0(r3) - eieio - blr - .globl out_16 -out_16: - oris r3, r3, 0xfe00 - sthbrx r4, 0, r3 - eieio - blr - .globl out_16_ne -out_16_ne: - oris r3, r3, 0xfe00 - sth r4, 0(r3) - eieio - blr - .globl out_32 -out_32: - oris r3, r3, 0xfe00 - stwbrx r4, 0, r3 - eieio - blr - .globl read_8 -read_8: - lbz r3,0(r3) - blr - .globl read_16 -read_16: - lhbrx r3, 0, r3 - blr - .globl read_32 -read_32: - lwbrx r3, 0, r3 - blr - .globl read_32_ne -read_32_ne: - lwz r3, 0(r3) - blr - .globl write_8 -write_8: - stb r4, 0(r3) - eieio - blr - .globl write_16 -write_16: - sthbrx r4, 0, r3 - eieio - blr - .globl write_32 -write_32: - stwbrx r4, 0, r3 - eieio - blr - .globl write_32_ne -write_32_ne: - stw r4, 0(r3) - eieio - blr - - -.globl early_init_f - -early_init_f: - mflr r11 - lis r10, 0x8000 - - /* PCI Latency Timer */ - li r4, 0x0d - ori r3, r10, PLTR@l - bl __pci_config_write_8 - - /* Cache Line Size */ - li r4, 0x08 - ori r3, r10, PCLSR@l - bl __pci_config_write_8 - - /* PCI Cmd */ - li r4, 6 - ori r3, r10, PCICR@l - bl __pci_config_write_16 - -#if 1 - /* PCI Stat */ - ori r3, r10, PCISR@l - bl __pci_config_read_16 - ori r4, r4, 0xffff - ori r3, r10, PCISR@l - bl __pci_config_write_16 -#endif - - /* PICR1 */ - lis r4, 0xff14 - ori r4, r4, 0x1b98 - ori r3, r10, PICR1@l - bl __pci_config_write_32 - - - /* PICR2 */ - lis r4, 0x0404 - ori r4, r4, 0x0004 - ori r3, r10, PICR2@l - bl __pci_config_write_32 - - /* MIOCR1 */ - li r4, 0x04 - ori r3, r10, MIOCR1@l - bl __pci_config_write_8 - - /* For the MPC8245, set register 77 to %00100000 (see Errata #15) */ - /* SDRAM_CLK_DEL (0x77)*/ - li r4, 0x10 - ori r3, r10, MIOCR2@l - bl __pci_config_write_8 - - /* EUMBBAR */ - lis r4, 0xfc00 - ori r3, r10, EUMBBAR@l - bl __pci_config_write_32 - - /* AMBOR */ - - /* Even if Address Map B is not being used (though it should), - * the memory DLL needs to be cleared/set/cleared before using memory. - */ - - ori r3, r10, AMBOR@l - bl __pci_config_read_8 /* get Current bits */ - - andi. r4, r4, 0xffdf - ori r3, r10, AMBOR@l - bl __pci_config_write_16 /* Clear DLL_RESET */ - - ori r4, r4, 0x0020 - ori r3, r10, AMBOR@l - bl __pci_config_write_16 /* Set DLL_RESET */ - - andi. r4, r4, 0xffdf - ori r3, r10, AMBOR@l - bl __pci_config_write_16 /* Clear DLL_RESET */ - - /* ERCR1 */ - lis r4, 0x8040 /* Enable RCS2, use supplied timings */ - ori r4, r4, 0x8000 - ori r3, r10, ERCR1@l - bl __pci_config_write_32 - - /* ERCR2 */ - lis r4, 0x0000 /* Disable RCS3 parms */ - ori r4, r4, 0x0000 - ori r3, r10, ERCR2@l - bl __pci_config_write_32 - - /* ERCR3 */ - lis r4, 0x0000 /* RCS3 at 0x70000000, 64K bytes */ - ori r4, r4, 0x0004 - ori r3, r10, ERCR2@l - bl __pci_config_write_32 - - /* Preserve memgo bit */ - /* MCCR1 */ - -/* lis r4, 0x75a8 / Safe Local ROM = 11+3 clocks */ - lis r4, 0x75a0 /* Safe Local ROM = 11+3 clocks */ -/* lis r4, 0x73a0 / Fast Local ROM = 7+3 clocks */ -/* oris r4, r4, 0x0010 / Burst ROM/Flash enable */ -/* oris r4, r4, 0x0004 / Self-refresh enable */ - -/* ori r4,r4,0xFFFF / 16Mbit 2bank SDRAM */ -/* ori r4,r4,0xAAAA / 256Mbit 4bank SDRAM (8245 only) */ -/* ori r4,r4,0x5555 / 64Mbit 2bank SDRAM */ - ori r4,r4,0x0000 /* 64Mbit 4bank SDRAM */ - - ori r3, r10, MCCR1@l - bl __pci_config_write_32 - - /* MCCR2 */ - - lis r4,0x0000 -/* oris r4,r4,0x4000 / TS_WAIT_TIMER = 3 clocks */ - oris r4,r4,0x1000 /* ASRISE = 8 clocks */ - oris r4,r4,0x0080 /* ASFALL = 8 clocks */ -/* oris r4,r4,0x0010 / SDRAM Parity (else ECC) */ -/* oris r4,r4,0x0008 / Write parity check */ -/* oris r4,r4,0x0004 / SDRAM inline reads */ - - -/* Select a refresh rate; it needs to match the bus speed; if too */ -/* slow, data may be lost; if too fast, performance is lost. We */ -/* use the fastest value so we run at all speeds. */ -/* Refresh = (15600ns/busclk) - (213 (see UM)). */ - -/* ori r4,r4,0x1d2c / 133 MHz mem bus = 1867 */ -/* ori r4,r4,0x150c / 100 MHz mem bus = 1347 */ -/* ori r4,r4,0x10fc / 83 MHz mem bus = 1087 */ -/* ori r4,r4,0x0cc4 / 66 MHz mem bus = 817 */ - ori r4,r4,0x04cc /* 33 MHz mem bus (SAFE) = 307 */ -/* ori r4,r4,0x0002 / Reserve a page */ -/* ori r4,r4,0x0001 / RWM parity */ - - ori r3, r10, MCCR2@l - bl __pci_config_write_32 - - - /* MCCR3 */ - lis r4,0x0000 /* BSTOPRE_M = 7 (see A/N) */ - oris r4,r4,0x0500 /* REFREC = 8 clocks */ - ori r3, r10, MCCR3@l - bl __pci_config_write_32 - - /* MCCR4 */ /* Turn on registered buffer mode */ - lis r4, 0x2000 /* PRETOACT = 3 clocks */ - oris r4,r4,0x0400 /* ACTOPRE = 5 clocks */ -/* oris r4,r4,0x0080 / Enable 8-beat burst (32-bit bus) */ -/* oris r4,r4,0x0040 / Enable Inline ECC/Parity */ - oris r4,r4,0x0020 /* EXTROM enabled */ - oris r4,r4,0x0010 /* Registered buffers */ -/* oris r4,r4,0x0000 / BSTOPRE_U = 0 (see A/N) */ - oris r4,r4,0x0002 /* DBUS_SIZ[2] (8 bit on RCS1) */ - -/* ori r4,r4,0x8000 / Registered DIMMs */ - ori r4,r4,0x2000 /*CAS Latency (CL=3) (see RDLAT) */ -/* ori r4,r4,0x2000 / CAS Latency (CL=2) (see RDLAT) */ -/* ori r4,r4,0x0300 / Sequential wrap/8-beat burst */ - ori r4,r4,0x0200 /* Sequential wrap/4-beat burst */ - ori r4,r4,0x0030 /* ACTORW = 3 clocks */ - ori r4,r4,0x0009 /* BSTOPRE_L = 9 (see A/N) */ - - ori r3, r10, MCCR4@l - bl __pci_config_write_32 - - /* MSAR1 */ - lis r4, 0xc0804000@h - ori r4, r4, 0xc0804000@l - ori r3, r10, MSAR1@l - bl __pci_config_write_32 - - /* MSAR2 */ - lis r4, 0xc0804000@h - ori r4, r4, 0xc0804000@l - ori r3, r10, MSAR2@l - bl __pci_config_write_32 - - /* MESAR1 */ - lis r4, 0x00000000@h - ori r4, r4, 0x00000000@l - ori r3, r10, EMSAR1@l - bl __pci_config_write_32 - - /* MESAR2 */ - lis r4, 0x01010101@h - ori r4, r4, 0x01010101@l - ori r3, r10, EMSAR2@l - bl __pci_config_write_32 - - /* MEAR1 */ - lis r4, 0xffbf7f3f@h - ori r4, r4, 0xffbf7f3f@l - ori r3, r10, MEAR1@l - bl __pci_config_write_32 - - /* MEAR2 */ - lis r4, 0xffbf7f3f@h - ori r4, r4, 0xffbf7f3f@l - ori r3, r10, MEAR2@l - bl __pci_config_write_32 - - /* MEEAR1 */ - lis r4, 0x00000000@h - ori r4, r4, 0x00000000@l - ori r3, r10, EMEAR1@l - bl __pci_config_write_32 - - /* MEEAR2 */ - lis r4, 0x01010101@h - ori r4, r4, 0x01010101@l - ori r3, r10, EMEAR2@l - bl __pci_config_write_32 - - /* ODCR */ - li r4, 0x7f - ori r3, r10, ODCR@l - bl __pci_config_write_8 - - /* MBER */ - li r4, 0x01 - ori r3, r10, MBER@l - bl __pci_config_write_8 - - /* Page CTR aka PGMAX */ - li r4, 0x32 - ori r3, r10, 0x70 - bl __pci_config_write_8 - -#if 0 - /* CLK Drive */ - ori r4, r10, 0xfc01 /* Top bit will be ignored */ - ori r3, r10, 0x74 - bl __pci_config_write_16 -#endif - - /* delay */ - lis r7, 1 - mtctr r7 -label1: bdnz label1 - - /* Set memgo bit */ - /* MCCR1 */ - ori r3, r10, MCCR1@l - bl __pci_config_read_32 - lis r7, 0x0008 - or r4, r3, r7 - ori r3, r10, MCCR1@l - bl __pci_config_write_32 - - /* delay again */ - lis r7, 1 - mtctr r7 -label2: bdnz label2 -#if 0 -/* DEBUG: Infinite loop, write then read */ -loop: - lis r7, 0xffff - mtctr r7 - li r3, 0x5004 - lis r4, 0xa0a0 - ori r4, r4, 0x5050 - bl write_32_ne - li r3, 0x5004 - bl read_32_ne - bdnz loop -#endif - mtlr r11 - blr -#endif |
