/* LICENSED MATERIAL - PROGRAM PROPERTY OF I B M */
/*------------------------------------------------------------------------------- */
-/* U-Boot - Startup Code for IBM 4xx PowerPC based Embedded Boards
+/* U-Boot - Startup Code for AMCC 4xx PowerPC based Embedded Boards
*
*
* The processor starts at 0xfffffffc and the code is executed
.extern ext_bus_cntlr_init
.extern sdram_init
+#ifdef CONFIG_NAND_U_BOOT
+ .extern reconfig_tlb0
+#endif
/*
* Set up GOT: Global Offset Table
*
* Use r14 to access the GOT
*/
+#if !defined(CONFIG_NAND_SPL)
START_GOT
GOT_ENTRY(_GOT2_TABLE_)
GOT_ENTRY(_FIXUP_TABLE_)
GOT_ENTRY(_end)
GOT_ENTRY(__bss_start)
END_GOT
+#endif /* CONFIG_NAND_SPL */
+
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+ /*
+ * NAND U-Boot image is started from offset 0
+ */
+ .text
+ bl reconfig_tlb0
+ GET_GOT
+ bl cpu_init_f /* run low-level CPU init code (from Flash) */
+ bl board_init_f
+#endif
/*
* 440 Startup -- on reset only the top 4k of the effective
*/
#if defined(CONFIG_440)
+#if !defined(CONFIG_NAND_SPL)
.section .bootpg,"ax"
+#endif
.globl _start_440
/**************************************************************************/
_start_440:
+ /*--------------------------------------------------------------------+
+ | 440EPX BUP Change - Hardware team request
+ +--------------------------------------------------------------------*/
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+ sync
+ nop
+ nop
+#endif
+ /*----------------------------------------------------------------+
+ | Core bug fix. Clear the esr
+ +-----------------------------------------------------------------*/
+ li r0,0
+ mtspr esr,r0
/*----------------------------------------------------------------*/
/* Clear and set up some registers. */
/*----------------------------------------------------------------*/
- iccci r0,r0 /* NOTE: operands not used for 440 */
- dccci r0,r0 /* NOTE: operands not used for 440 */
+ iccci r0,r0 /* NOTE: operands not used for 440 */
+ dccci r0,r0 /* NOTE: operands not used for 440 */
sync
li r0,0
mtspr srr0,r0
mtspr srr1,r0
mtspr csrr0,r0
mtspr csrr1,r0
-#if defined (CONFIG_440_GX) /* NOTE: 440GX adds machine check status regs */
- mtspr mcsrr0,r0
- mtspr mcsrr1,r0
- mfspr r1, mcsr
- mtspr mcsr,r1
+ /* NOTE: 440GX adds machine check status regs */
+#if defined(CONFIG_440) && !defined(CONFIG_440GP)
+ mtspr mcsrr0,r0
+ mtspr mcsrr1,r0
+ mfspr r1,mcsr
+ mtspr mcsr,r1
#endif
+
+ /*----------------------------------------------------------------*/
+ /* CCR0 init */
+ /*----------------------------------------------------------------*/
+ /* Disable store gathering & broadcast, guarantee inst/data
+ * cache block touch, force load/store alignment
+ * (see errata 1.12: 440_33)
+ */
+ lis r1,0x0030 /* store gathering & broadcast disable */
+ ori r1,r1,0x6000 /* cache touch */
+ mtspr ccr0,r1
+
/*----------------------------------------------------------------*/
/* Initialize debug */
/*----------------------------------------------------------------*/
+ mfspr r1,dbcr0
+ andis. r1, r1, 0x8000 /* test DBCR0[EDM] bit */
+ bne skip_debug_init /* if set, don't clear debug register */
mtspr dbcr0,r0
mtspr dbcr1,r0
mtspr dbcr2,r0
mfspr r1,dbsr
mtspr dbsr,r1 /* Clear all valid bits */
-
- /*----------------------------------------------------------------*/
- /* CCR0 init */
- /*----------------------------------------------------------------*/
- /* Disable store gathering & broadcast, guarantee inst/data
- * cache block touch, force load/store alignment
- * (see errata 1.12: 440_33)
- */
- lis r1,0x0030 /* store gathering & broadcast disable */
- ori r1,r1,0x6000 /* cache touch */
- mtspr ccr0,r1
+skip_debug_init:
+
+#if defined (CONFIG_440SPE)
+ /*----------------------------------------------------------------+
+ | Initialize Core Configuration Reg1.
+ | a. ICDPEI: Record even parity. Normal operation.
+ | b. ICTPEI: Record even parity. Normal operation.
+ | c. DCTPEI: Record even parity. Normal operation.
+ | d. DCDPEI: Record even parity. Normal operation.
+ | e. DCUPEI: Record even parity. Normal operation.
+ | f. DCMPEI: Record even parity. Normal operation.
+ | g. FCOM: Normal operation
+ | h. MMUPEI: Record even parity. Normal operation.
+ | i. FFF: Flush only as much data as necessary.
+ | j. TCS: Timebase increments from CPU clock.
+ +-----------------------------------------------------------------*/
+ li r0,0
+ mtspr ccr1, r0
+
+ /*----------------------------------------------------------------+
+ | Reset the timebase.
+ | The previous write to CCR1 sets the timebase source.
+ +-----------------------------------------------------------------*/
+ mtspr tbl, r0
+ mtspr tbu, r0
+#endif
/*----------------------------------------------------------------*/
/* Setup interrupt vectors */
/*----------------------------------------------------------------*/
mtspr ivpr,r0 /* Vectors start at 0x0000_0000 */
- li r1,0x0100
+ li r1,0x0100
mtspr ivor0,r1 /* Critical input */
- li r1,0x0200
+ li r1,0x0200
mtspr ivor1,r1 /* Machine check */
- li r1,0x0300
+ li r1,0x0300
mtspr ivor2,r1 /* Data storage */
- li r1,0x0400
+ li r1,0x0400
mtspr ivor3,r1 /* Instruction storage */
li r1,0x0500
mtspr ivor4,r1 /* External interrupt */
mtspr ivlim,r1
mtspr dvlim,r1
+ /*----------------------------------------------------------------+
+ |Initialize MMUCR[STID] = 0.
+ +-----------------------------------------------------------------*/
+ mfspr r0,mmucr
+ addis r1,0,0xFFFF
+ ori r1,r1,0xFF00
+ and r0,r0,r1
+ mtspr mmucr,r0
+
/*----------------------------------------------------------------*/
/* Clear all TLB entries -- TID = 0, TS = 0 */
/*----------------------------------------------------------------*/
- mtspr mmucr,r0
+ addis r0,0,0x0000
li r1,0x003f /* 64 TLB entries */
mtctr r1
-0: tlbwe r0,r1,0x0000 /* Invalidate all entries (V=0)*/
+rsttlb: tlbwe r0,r1,0x0000 /* Invalidate all entries (V=0)*/
+ tlbwe r0,r1,0x0001
+ tlbwe r0,r1,0x0002
subi r1,r1,0x0001
- bdnz 0b
+ bdnz rsttlb
/*----------------------------------------------------------------*/
/* TLB entry setup -- step thru tlbtab */
/*----------------------------------------------------------------*/
+#if defined(CONFIG_440SPE)
+ /*----------------------------------------------------------------*/
+ /* We have different TLB tables for revA and rev B of 440SPe */
+ /*----------------------------------------------------------------*/
+ mfspr r1, PVR
+ lis r0,0x5342
+ ori r0,r0,0x1891
+ cmpw r7,r1,r0
+ bne r7,..revA
+ bl tlbtabB
+ b ..goon
+..revA:
+ bl tlbtabA
+..goon:
+#else
bl tlbtab /* Get tlbtab pointer */
+#endif
mr r5,r0
li r1,0x003f /* 64 TLB entries max */
mtctr r1
/*----------------------------------------------------------------*/
/* Continue from 'normal' start */
/*----------------------------------------------------------------*/
-2: bl 3f
+2:
+
+#if defined(CONFIG_NAND_SPL)
+ /*
+ * Enable internal SRAM
+ */
+ lis r2,0x7fff
+ ori r2,r2,0xffff
+ mfdcr r1,isram0_dpc
+ and r1,r1,r2 /* Disable parity check */
+ mtdcr isram0_dpc,r1
+ mfdcr r1,isram0_pmeg
+ and r1,r1,r2 /* Disable pwr mgmt */
+ mtdcr isram0_pmeg,r1
+
+ /*
+ * Copy SPL from cache into internal SRAM
+ */
+ li r4,(CFG_NAND_BOOT_SPL_SIZE >> 2) - 1
+ mtctr r4
+ lis r2,CFG_NAND_BOOT_SPL_SRC@h
+ ori r2,r2,CFG_NAND_BOOT_SPL_SRC@l
+ lis r3,CFG_NAND_BOOT_SPL_DST@h
+ ori r3,r3,CFG_NAND_BOOT_SPL_DST@l
+spl_loop:
+ lwzu r4,4(r2)
+ stwu r4,4(r3)
+ bdnz spl_loop
+
+ /*
+ * Jump to code in RAM
+ */
+ bl 00f
+00: mflr r10
+ lis r3,(CFG_NAND_BOOT_SPL_SRC - CFG_NAND_BOOT_SPL_DST)@h
+ ori r3,r3,(CFG_NAND_BOOT_SPL_SRC - CFG_NAND_BOOT_SPL_DST)@l
+ sub r10,r10,r3
+ addi r10,r10,28
+ mtlr r10
+ blr
+
+start_ram:
+ sync
+ isync
+#endif
+
+ bl 3f
b _start
3: li r0,0
* r3 - 1st arg to board_init(): IMMP pointer
* r4 - 2nd arg to board_init(): boot flag
*/
+#ifndef CONFIG_NAND_SPL
.text
.long 0x27051956 /* U-Boot Magic Number */
.globl version_string
* location (0x100) is where the CriticalInput Execption should be.
*/
. = EXC_OFF_SYS_RESET
+#endif
.globl _start
_start:
mtspr tcr,r0 /* disable all */
mtspr esr,r0 /* clear exception syndrome register */
mtxer r0 /* clear integer exception register */
-#if !defined(CONFIG_440_GX)
- lis r1,0x0002 /* set CE bit (Critical Exceptions) */
- ori r1,r1,0x1000 /* set ME bit (Machine Exceptions) */
- mtmsr r1 /* change MSR */
-#else
- bl __440gx_msr_set
- b __440gx_msr_continue
-
-__440gx_msr_set:
- lis r1, 0x0002 /* set CE bit (Critical Exceptions) */
- ori r1,r1,0x1000 /* set ME bit (Machine Exceptions) */
- mtspr srr1,r1
- mflr r1
- mtspr srr0,r1
- rfi
-__440gx_msr_continue:
-#endif
/*----------------------------------------------------------------*/
/* Debug setup -- some (not very good) ice's need an event*/
/* Setup the internal SRAM */
/*----------------------------------------------------------------*/
li r0,0
-#if defined (CONFIG_440_GX)
- mtdcr l2_cache_cfg,r0 /* Ensure L2 Cache is off */
+
+#ifdef CFG_INIT_RAM_DCACHE
+ /* Clear Dcache to use as RAM */
+ addis r3,r0,CFG_INIT_RAM_ADDR@h
+ ori r3,r3,CFG_INIT_RAM_ADDR@l
+ addis r4,r0,CFG_INIT_RAM_END@h
+ ori r4,r4,CFG_INIT_RAM_END@l
+ rlwinm. r5,r4,0,27,31
+ rlwinm r5,r4,27,5,31
+ beq ..d_ran
+ addi r5,r5,0x0001
+..d_ran:
+ mtctr r5
+..d_ag:
+ dcbz r0,r3
+ addi r3,r3,32
+ bdnz ..d_ag
+#endif /* CFG_INIT_RAM_DCACHE */
+
+ /* 440EP & 440GR are only 440er PPC's without internal SRAM */
+#if !defined(CONFIG_440EP) && !defined(CONFIG_440GR)
+ /* not all PPC's have internal SRAM usable as L2-cache */
+#if defined(CONFIG_440GX) || defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ mtdcr l2_cache_cfg,r0 /* Ensure L2 Cache is off */
#endif
- mtdcr isram0_sb1cr,r0 /* Disable bank 1 */
- li r2,0x7fff
+ lis r2,0x7fff
ori r2,r2,0xffff
mfdcr r1,isram0_dpc
and r1,r1,r2 /* Disable parity check */
mtdcr isram0_dpc,r1
mfdcr r1,isram0_pmeg
- andis. r1,r1,r2 /* Disable pwr mgmt */
+ and r1,r1,r2 /* Disable pwr mgmt */
mtdcr isram0_pmeg,r1
lis r1,0x8000 /* BAS = 8000_0000 */
-#if defined(CONFIG_440_GX)
+#if defined(CONFIG_440GX) || defined(CONFIG_440SP)
ori r1,r1,0x0980 /* first 64k */
- mtdcr isram0_sb0cr,r1
+ mtdcr isram0_sb0cr,r1
lis r1,0x8001
ori r1,r1,0x0980 /* second 64k */
- mtdcr isram0_sb1cr,r1
+ mtdcr isram0_sb1cr,r1
lis r1, 0x8002
ori r1,r1, 0x0980 /* third 64k */
- mtdcr isram0_sb2cr,r1
+ mtdcr isram0_sb2cr,r1
lis r1, 0x8003
ori r1,r1, 0x0980 /* fourth 64k */
- mtdcr isram0_sb3cr,r1
-#else
+ mtdcr isram0_sb3cr,r1
+#elif defined(CONFIG_440SPE)
+ lis r1,0x0000 /* BAS = 0000_0000 */
+ ori r1,r1,0x0984 /* first 64k */
+ mtdcr isram0_sb0cr,r1
+ lis r1,0x0001
+ ori r1,r1,0x0984 /* second 64k */
+ mtdcr isram0_sb1cr,r1
+ lis r1, 0x0002
+ ori r1,r1, 0x0984 /* third 64k */
+ mtdcr isram0_sb2cr,r1
+ lis r1, 0x0003
+ ori r1,r1, 0x0984 /* fourth 64k */
+ mtdcr isram0_sb3cr,r1
+#elif defined(CONFIG_440GP)
ori r1,r1,0x0380 /* 8k rw */
mtdcr isram0_sb0cr,r1
+ mtdcr isram0_sb1cr,r0 /* Disable bank 1 */
#endif
+#endif /* #if !defined(CONFIG_440EP) && !defined(CONFIG_440GR) */
/*----------------------------------------------------------------*/
/* Setup the stack in internal SRAM */
/*----------------------------------------------------------------*/
lis r1,CFG_INIT_RAM_ADDR@h
ori r1,r1,CFG_INIT_SP_OFFSET@l
-
li r0,0
stwu r0,-4(r1)
stwu r0,-4(r1) /* Terminate call chain */
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 /* will not return */
+#else
GET_GOT
+
+ bl cpu_init_f /* run low-level CPU init code (from Flash) */
bl board_init_f
+#endif
#endif /* CONFIG_440 */
mtspr esr,r0 /* clear Exception Syndrome Reg */
mttcr r0 /* timer control register */
mtexier r0 /* disable all interrupts */
- addi r4,r0,0x1000 /* set ME bit (Machine Exceptions) */
- oris r4,r4,0x2 /* set CE bit (Critical Exceptions) */
- mtmsr r4 /* change MSR */
addis r4,r0,0xFFFF /* set r4 to 0xFFFFFFFF (status in the */
ori r4,r4,0xFFFF /* dbsr is cleared by setting bits to 1) */
mtdbsr r4 /* clear/reset the dbsr */
mttcr r4 /* clear Timer Control Reg */
mtxer r4 /* clear Fixed-Point Exception Reg */
mtevpr r4 /* clear Exception Vector Prefix Reg */
- addi r4,r0,0x1000 /* set ME bit (Machine Exceptions) */
- oris r4,r4,0x0002 /* set CE bit (Critical Exceptions) */
- mtmsr r4 /* change MSR */
addi r4,r0,(0xFFFF-0x10000) /* set r4 to 0xFFFFFFFF (status in the */
/* dbsr is cleared by setting bits to 1) */
mtdbsr r4 /* clear/reset the dbsr */
/*----------------------------------------------------------------------- */
/* DMA Status, clear to come up clean */
/*----------------------------------------------------------------------- */
- addis r3,r0, 0xFFFF /* Clear all existing DMA status */
- ori r3,r3, 0xFFFF
- mtdcr dmasr, r3
+ addis r3,r0, 0xFFFF /* Clear all existing DMA status */
+ ori r3,r3, 0xFFFF
+ mtdcr dmasr, r3
- bl ppc405ep_init /* do ppc405ep specific init */
+ bl ppc405ep_init /* do ppc405ep specific init */
#endif /* CONFIG_405EP */
#if defined(CFG_OCM_DATA_ADDR) && defined(CFG_OCM_DATA_SIZE)
/* Setup OCM */
lis r0, 0x7FFF
ori r0, r0, 0xFFFF
- mfdcr r3, ocmiscntl /* get instr-side IRAM config */
+ mfdcr r3, ocmiscntl /* get instr-side IRAM config */
mfdcr r4, ocmdscntl /* get data-side IRAM config */
and r3, r3, r0 /* disable data-side IRAM */
and r4, r4, r0 /* disable data-side IRAM */
/* set stack pointer and clear stack to known value */
lis r1,CFG_INIT_RAM_ADDR@h
- ori r1,r1,CFG_INIT_SP_OFFSET@l
+ ori r1,r1,CFG_INIT_SP_OFFSET@l
li r4,2048 /* we store 2048 words to stack */
mtctr r4
lis r2,CFG_INIT_RAM_ADDR@h /* we also clear data area */
- ori r2,r2,CFG_INIT_RAM_END@l /* so cant copy value from r1 */
+ ori r2,r2,CFG_INIT_RAM_END@l /* so cant copy value from r1 */
lis r4,0xdead /* we store 0xdeaddead in the stack */
ori r4,r4,0xdead
#endif /* CFG_INIT_DCACHE_CS */
/*----------------------------------------------------------------------- */
- /* Initialize SDRAM Controller */
+ /* Initialize SDRAM Controller */
/*----------------------------------------------------------------------- */
bl sdram_init
ori r0, r0, RESET_VECTOR@l
stwu r1, -8(r1) /* Save back chain and move SP */
stw r0, +12(r1) /* Save return addr (underflow vect) */
-#endif /* !(CFG_INIT_DCACHE_CS || !CFG_TEM_STACK_OCM) */
+#endif /* !(CFG_INIT_DCACHE_CS || !CFG_TEM_STACK_OCM) */
GET_GOT /* initialize GOT access */
- bl cpu_init_f /* run low-level CPU init code (from Flash) */
+ bl cpu_init_f /* run low-level CPU init code (from Flash) */
/* NEVER RETURNS! */
bl board_init_f /* run first part of init code (from Flash) */
/*----------------------------------------------------------------------- */
+#ifndef CONFIG_NAND_SPL
/*****************************************************************************/
.globl _start_of_vectors
_start_of_vectors:
lwz r1,GPR1(r1)
SYNC
rfci
+#endif /* CONFIG_NAND_SPL */
/* Cache functions.
*/
invalidate_dcache:
addi r6,0,0x0000 /* clear GPR 6 */
/* Do loop for # of dcache congruence classes. */
-#if defined(CONFIG_440_GX)
- lis r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha /* TBS for large sized cache */
- ori r7, r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
-#else
- addi r7,r0, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)
-#endif
+ lis r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha /* TBS for large sized cache */
+ ori r7, r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
/* NOTE: dccci invalidates both */
mtctr r7 /* ways in the D cache */
..dcloop:
mtdccr r10
/* do loop for # of congruence classes. */
-#if defined(CONFIG_440_GX)
- lis r10,(CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha /* TBS: for large cache sizes */
- ori r10,r10,(CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
- lis r11,(CFG_DCACHE_SIZE / 2)@ha /* D cache set size - 2 way sets */
- ori r11,r11,(CFG_DCACHE_SIZE / 2)@l /* D cache set size - 2 way sets */
-#else
- addi r10,r0,(CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)
- addi r11,r0,(CFG_DCACHE_SIZE / 2) /* D cache set size - 2 way sets */
-#endif
+ lis r10,(CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha /* TBS: for large cache sizes */
+ ori r10,r10,(CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
+ lis r11,(CFG_DCACHE_SIZE / 2)@ha /* D cache set size - 2 way sets */
+ ori r11,r11,(CFG_DCACHE_SIZE / 2)@l /* D cache set size - 2 way sets */
mtctr r10
- addi r10,r0,(0xE000-0x10000) /* start at 0xFFFFE000 */
+ addi r10,r0,(0xE000-0x10000) /* start at 0xFFFFE000 */
add r11,r10,r11 /* add to get to other side of cache line */
..flush_dcache_loop:
lwz r3,0(r10) /* least recently used side */
/*------------------------------------------------------------------------------*/
+#ifndef CONFIG_NAND_SPL
/*
* void relocate_code (addr_sp, gd, addr_moni)
*
*/
.globl relocate_code
relocate_code:
+#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+ defined(CONFIG_440SPE)
+ /*
+ * On some 440er platforms the cache is enabled in the first TLB (Boot-CS)
+ * to speed up the boot process. Now this cache needs to be disabled.
+ */
+ iccci 0,0 /* Invalidate inst cache */
+ dccci 0,0 /* Invalidate data cache, now no longer our stack */
+ sync
+ isync
+ addi r1,r0,0x0000 /* TLB entry #0 */
+ tlbre r0,r1,0x0002 /* Read contents */
+ ori r0,r0,0x0c00 /* Or in the inhibit, write through bit */
+ tlbwe r0,r1,0x0002 /* Save it out */
+ sync
+ isync
+#endif
mr r1, r3 /* Set new stack pointer */
mr r9, r4 /* Save copy of Init Data pointer */
mr r10, r5 /* Save copy of Destination Address */
cmplw 0, r7, r8
blt 4b
+#if !defined(CONFIG_440)
+ addi r7,r0,0x1000 /* set ME bit (Machine Exceptions) */
+ oris r7,r7,0x0002 /* set CE bit (Critical Exceptions) */
+ mtmsr r7 /* change MSR */
+#else
+ bl __440_msr_set
+ b __440_msr_continue
+
+__440_msr_set:
+ addi r7,r0,0x1000 /* set ME bit (Machine Exceptions) */
+ oris r7,r7,0x0002 /* set CE bit (Critical Exceptions) */
+ mtspr srr1,r7
+ mflr r7
+ mtspr srr0,r7
+ rfi
+__440_msr_continue:
+#endif
+
mtlr r4 /* restore link register */
blr
stw r0, 4(r7)
blr
+#endif /* CONFIG_NAND_SPL */
/**************************************************************************/
-/* PPC405EP specific stuff */
+/* PPC405EP specific stuff */
/**************************************************************************/
#ifdef CONFIG_405EP
ppc405ep_init:
-#ifdef CONFIG_BUBINGA405EP
+#ifdef CONFIG_BUBINGA
/*
* Initialize EBC chip selects 1 & 4 and GPIO pins (for alternate
* function) to support FPGA and NVRAM accesses below.
mtdcr ebccfgd,r3
#endif
- addi r3,0,CPC0_PCI_HOST_CFG_EN
-#ifdef CONFIG_BUBINGA405EP
+#ifndef CFG_CPC0_PCI
+ li r3,CPC0_PCI_HOST_CFG_EN
+#ifdef CONFIG_BUBINGA
/*
!-----------------------------------------------------------------------
! Check FPGA for PCI internal/external arbitration
! If board is set to internal arbitration, update cpc0_pci
!-----------------------------------------------------------------------
*/
- addis r5,r0,FPGA_REG1@h /* set offset for FPGA_REG1 */
- ori r5,r5,FPGA_REG1@l
- lbz r5,0x0(r5) /* read to get PCI arb selection */
- andi. r6,r5,FPGA_REG1_PCI_INT_ARB /* using internal arbiter ?*/
- beq ..pci_cfg_set /* if not set, then bypass reg write*/
+ addis r5,r0,FPGA_REG1@h /* set offset for FPGA_REG1 */
+ ori r5,r5,FPGA_REG1@l
+ lbz r5,0x0(r5) /* read to get PCI arb selection */
+ andi. r6,r5,FPGA_REG1_PCI_INT_ARB /* using internal arbiter ?*/
+ beq ..pci_cfg_set /* if not set, then bypass reg write*/
#endif
- ori r3,r3,CPC0_PCI_ARBIT_EN
+ ori r3,r3,CPC0_PCI_ARBIT_EN
+#else /* CFG_CPC0_PCI */
+ li r3,CFG_CPC0_PCI
+#endif /* CFG_CPC0_PCI */
..pci_cfg_set:
- mtdcr CPC0_PCI, r3 /* Enable internal arbiter*/
+ mtdcr CPC0_PCI, r3 /* Enable internal arbiter*/
/*
!-----------------------------------------------------------------------
! Check to see if chip is in bypass mode.
! If so, write stored CPC0_PLLMR0 and CPC0_PLLMR1 values and perform a
! CPU reset Otherwise, skip this step and keep going.
- ! Note: Running BIOS in bypass mode is not supported since PLB speed
- ! will not be fast enough for the SDRAM (min 66MHz)
+ ! Note: Running BIOS in bypass mode is not supported since PLB speed
+ ! will not be fast enough for the SDRAM (min 66MHz)
!-----------------------------------------------------------------------
*/
- mfdcr r5, CPC0_PLLMR1
- rlwinm r4,r5,1,0x1 /* get system clock source (SSCS) */
- cmpi cr0,0,r4,0x1
+ mfdcr r5, CPC0_PLLMR1
+ rlwinm r4,r5,1,0x1 /* get system clock source (SSCS) */
+ cmpi cr0,0,r4,0x1
- beq pll_done /* if SSCS =b'1' then PLL has */
+ beq pll_done /* if SSCS =b'1' then PLL has */
/* already been set */
/* and CPU has been reset */
/* so skip to next section */
-#ifdef CONFIG_BUBINGA405EP
+#ifdef CONFIG_BUBINGA
/*
!-----------------------------------------------------------------------
! Read NVRAM to get value to write in PLLMR.
! See CPU_DEFAULT_200 and CPU_DEFAULT_266 above.
!
! WARNING: This code assumes the first three words in the nvram_t
- ! structure in openbios.h. Changing the beginning of
- ! the structure will break this code.
+ ! structure in openbios.h. Changing the beginning of
+ ! the structure will break this code.
!
!-----------------------------------------------------------------------
*/
- addis r3,0,NVRAM_BASE@h
- addi r3,r3,NVRAM_BASE@l
-
- lwz r4, 0(r3)
- addis r5,0,NVRVFY1@h
- addi r5,r5,NVRVFY1@l
- cmp cr0,0,r4,r5 /* Compare 1st NVRAM Magic number*/
- bne ..no_pllset
- addi r3,r3,4
- lwz r4, 0(r3)
- addis r5,0,NVRVFY2@h
- addi r5,r5,NVRVFY2@l
- cmp cr0,0,r4,r5 /* Compare 2 NVRAM Magic number */
- bne ..no_pllset
- addi r3,r3,8 /* Skip over conf_size */
- lwz r4, 4(r3) /* Load PLLMR1 value from NVRAM */
- lwz r3, 0(r3) /* Load PLLMR0 value from NVRAM */
- rlwinm r5,r4,1,0x1 /* get system clock source (SSCS) */
- cmpi cr0,0,r5,1 /* See if PLL is locked */
- beq pll_write
+ addis r3,0,NVRAM_BASE@h
+ addi r3,r3,NVRAM_BASE@l
+
+ lwz r4, 0(r3)
+ addis r5,0,NVRVFY1@h
+ addi r5,r5,NVRVFY1@l
+ cmp cr0,0,r4,r5 /* Compare 1st NVRAM Magic number*/
+ bne ..no_pllset
+ addi r3,r3,4
+ lwz r4, 0(r3)
+ addis r5,0,NVRVFY2@h
+ addi r5,r5,NVRVFY2@l
+ cmp cr0,0,r4,r5 /* Compare 2 NVRAM Magic number */
+ bne ..no_pllset
+ addi r3,r3,8 /* Skip over conf_size */
+ lwz r4, 4(r3) /* Load PLLMR1 value from NVRAM */
+ lwz r3, 0(r3) /* Load PLLMR0 value from NVRAM */
+ rlwinm r5,r4,1,0x1 /* get system clock source (SSCS) */
+ cmpi cr0,0,r5,1 /* See if PLL is locked */
+ beq pll_write
..no_pllset:
-#endif /* CONFIG_BUBINGA405EP */
+#endif /* CONFIG_BUBINGA */
- addis r3,0,PLLMR0_DEFAULT@h /* PLLMR0 default value */
- ori r3,r3,PLLMR0_DEFAULT@l /* */
- addis r4,0,PLLMR1_DEFAULT@h /* PLLMR1 default value */
- ori r4,r4,PLLMR1_DEFAULT@l /* */
+ addis r3,0,PLLMR0_DEFAULT@h /* PLLMR0 default value */
+ ori r3,r3,PLLMR0_DEFAULT@l /* */
+ addis r4,0,PLLMR1_DEFAULT@h /* PLLMR1 default value */
+ ori r4,r4,PLLMR1_DEFAULT@l /* */
- b pll_write /* Write the CPC0_PLLMR with new value */
+ b pll_write /* Write the CPC0_PLLMR with new value */
pll_done:
/*
! This is needed to enable PCI if not booting from serial EPROM
!-----------------------------------------------------------------------
*/
- addi r3, 0, 0x0
- mtdcr CPC0_SRR, r3
+ addi r3, 0, 0x0
+ mtdcr CPC0_SRR, r3
- addis r3,0,0x0010
- mtctr r3
+ addis r3,0,0x0010
+ mtctr r3
pci_wait:
- bdnz pci_wait
+ bdnz pci_wait
blr /* return to main code */
/*
!-----------------------------------------------------------------------------
-! Function: pll_write
-! Description: Updates the value of the CPC0_PLLMR according to CMOS27E documentation
-! That is:
-! 1. Pll is first disabled (de-activated by putting in bypass mode)
-! 2. PLL is reset
-! 3. Clock dividers are set while PLL is held in reset and bypassed
-! 4. PLL Reset is cleared
-! 5. Wait 100us for PLL to lock
-! 6. A core reset is performed
+! Function: pll_write
+! Description: Updates the value of the CPC0_PLLMR according to CMOS27E documentation
+! That is:
+! 1. Pll is first disabled (de-activated by putting in bypass mode)
+! 2. PLL is reset
+! 3. Clock dividers are set while PLL is held in reset and bypassed
+! 4. PLL Reset is cleared
+! 5. Wait 100us for PLL to lock
+! 6. A core reset is performed
! Input: r3 = Value to write to CPC0_PLLMR0
! Input: r4 = Value to write to CPC0_PLLMR1
! Output r3 = none
pll_write:
mfdcr r5, CPC0_UCR
andis. r5,r5,0xFFFF
- ori r5,r5,0x0101 /* Stop the UART clocks */
- mtdcr CPC0_UCR,r5 /* Before changing PLL */
+ ori r5,r5,0x0101 /* Stop the UART clocks */
+ mtdcr CPC0_UCR,r5 /* Before changing PLL */
mfdcr r5, CPC0_PLLMR1
- rlwinm r5,r5,0,0x7FFFFFFF /* Disable PLL */
- mtdcr CPC0_PLLMR1,r5
- oris r5,r5,0x4000 /* Set PLL Reset */
- mtdcr CPC0_PLLMR1,r5
-
- mtdcr CPC0_PLLMR0,r3 /* Set clock dividers */
- rlwinm r5,r4,0,0x3FFFFFFF /* Reset & Bypass new PLL dividers */
- oris r5,r5,0x4000 /* Set PLL Reset */
- mtdcr CPC0_PLLMR1,r5 /* Set clock dividers */
- rlwinm r5,r5,0,0xBFFFFFFF /* Clear PLL Reset */
- mtdcr CPC0_PLLMR1,r5
+ rlwinm r5,r5,0,0x7FFFFFFF /* Disable PLL */
+ mtdcr CPC0_PLLMR1,r5
+ oris r5,r5,0x4000 /* Set PLL Reset */
+ mtdcr CPC0_PLLMR1,r5
+
+ mtdcr CPC0_PLLMR0,r3 /* Set clock dividers */
+ rlwinm r5,r4,0,0x3FFFFFFF /* Reset & Bypass new PLL dividers */
+ oris r5,r5,0x4000 /* Set PLL Reset */
+ mtdcr CPC0_PLLMR1,r5 /* Set clock dividers */
+ rlwinm r5,r5,0,0xBFFFFFFF /* Clear PLL Reset */
+ mtdcr CPC0_PLLMR1,r5
/*
! Wait min of 100us for PLL to lock.
! See CMOS 27E databook for more info.
! At 200MHz, that means waiting 20,000 instructions
*/
- addi r3,0,20000 /* 2000 = 0x4e20 */
- mtctr r3
+ addi r3,0,20000 /* 2000 = 0x4e20 */
+ mtctr r3
pll_wait:
- bdnz pll_wait
+ bdnz pll_wait
- oris r5,r5,0x8000 /* Enable PLL */
- mtdcr CPC0_PLLMR1,r5 /* Engage */
+ oris r5,r5,0x8000 /* Enable PLL */
+ mtdcr CPC0_PLLMR1,r5 /* Engage */
/*
* Reset CPU to guarantee timings are OK
* Not sure if this is needed...
*/
addis r3,0,0x1000
- mtspr dbcr0,r3 /* This will cause a CPU core reset, and */
+ mtspr dbcr0,r3 /* This will cause a CPU core reset, and */
/* execution will continue from the poweron */
/* vector of 0xfffffffc */
#endif /* CONFIG_405EP */
+
+#if defined(CONFIG_440)
+#define function_prolog(func_name) .text; \
+ .align 2; \
+ .globl func_name; \
+ func_name:
+#define function_epilog(func_name) .type func_name,@function; \
+ .size func_name,.-func_name
+
+/*----------------------------------------------------------------------------+
+| mttlb3.
++----------------------------------------------------------------------------*/
+ function_prolog(mttlb3)
+ TLBWE(4,3,2)
+ blr
+ function_epilog(mttlb3)
+
+/*----------------------------------------------------------------------------+
+| mftlb3.
++----------------------------------------------------------------------------*/
+ function_prolog(mftlb3)
+ TLBRE(3,3,2)
+ blr
+ function_epilog(mftlb3)
+
+/*----------------------------------------------------------------------------+
+| mttlb2.
++----------------------------------------------------------------------------*/
+ function_prolog(mttlb2)
+ TLBWE(4,3,1)
+ blr
+ function_epilog(mttlb2)
+
+/*----------------------------------------------------------------------------+
+| mftlb2.
++----------------------------------------------------------------------------*/
+ function_prolog(mftlb2)
+ TLBRE(3,3,1)
+ blr
+ function_epilog(mftlb2)
+
+/*----------------------------------------------------------------------------+
+| mttlb1.
++----------------------------------------------------------------------------*/
+ function_prolog(mttlb1)
+ TLBWE(4,3,0)
+ blr
+ function_epilog(mttlb1)
+
+/*----------------------------------------------------------------------------+
+| mftlb1.
++----------------------------------------------------------------------------*/
+ function_prolog(mftlb1)
+ TLBRE(3,3,0)
+ blr
+ function_epilog(mftlb1)
+
+/*----------------------------------------------------------------------------+
+| dcbz_area.
++----------------------------------------------------------------------------*/
+ function_prolog(dcbz_area)
+ rlwinm. r5,r4,0,27,31
+ rlwinm r5,r4,27,5,31
+ beq ..d_ra2
+ addi r5,r5,0x0001
+..d_ra2:mtctr r5
+..d_ag2:dcbz r0,r3
+ addi r3,r3,32
+ bdnz ..d_ag2
+ sync
+ blr
+ function_epilog(dcbz_area)
+
+/*----------------------------------------------------------------------------+
+| dflush. Assume 32K at vector address is cachable.
++----------------------------------------------------------------------------*/
+ function_prolog(dflush)
+ mfmsr r9
+ rlwinm r8,r9,0,15,13
+ rlwinm r8,r8,0,17,15
+ mtmsr r8
+ addi r3,r0,0x0000
+ mtspr dvlim,r3
+ mfspr r3,ivpr
+ addi r4,r0,1024
+ mtctr r4
+..dflush_loop:
+ lwz r6,0x0(r3)
+ addi r3,r3,32
+ bdnz ..dflush_loop
+ addi r3,r3,-32
+ mtctr r4
+..ag: dcbf r0,r3
+ addi r3,r3,-32
+ bdnz ..ag
+ sync
+ mtmsr r9
+ blr
+ function_epilog(dflush)
+#endif /* CONFIG_440 */
projects / people / ms / u-boot.git / blobdiff