* Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
* Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
* Copyright (C) 2000, 2001,2002 Wolfgang Denk <wd@denx.de>
- * Copyright 2004 Freescale Semiconductor, Inc.
+ * Copyright Freescale Semiconductor, Inc. 2004, 2006, 2008.
*
* See file CREDITS for list of people who contributed to this
* project.
#include <config.h>
#include <mpc83xx.h>
+#include <timestamp.h>
#include <version.h>
#define CONFIG_83XX 1 /* needed for Linux kernel header files*/
#define MSR_KERNEL (MSR_FP|MSR_ME|MSR_RI)
#endif
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SYS_RAMBOOT)
+#define CONFIG_SYS_FLASHBOOT
+#endif
+
/*
* Set up GOT: Global Offset Table
*
*/
START_GOT
GOT_ENTRY(_GOT2_TABLE_)
- GOT_ENTRY(_FIXUP_TABLE_)
+ GOT_ENTRY(__bss_start)
+ GOT_ENTRY(_end)
+#ifndef CONFIG_NAND_SPL
+ GOT_ENTRY(_FIXUP_TABLE_)
GOT_ENTRY(_start)
GOT_ENTRY(_start_of_vectors)
GOT_ENTRY(_end_of_vectors)
GOT_ENTRY(transfer_to_handler)
-
- GOT_ENTRY(__init_end)
- GOT_ENTRY(_end)
- GOT_ENTRY(__bss_start)
+#endif
END_GOT
/*
- * Version string - must be in data segment because MPC83xx uses the
- * first 256 bytes for the Hard Reset Configuration Word table (see
- * below). Similarly, can't have the U-Boot Magic Number as the first
- * thing in the image - don't know how this will affect the image tools,
- * but I guess I'll find out soon.
+ * The Hard Reset Configuration Word (HRCW) table is in the first 64
+ * (0x40) bytes of flash. It has 8 bytes, but each byte is repeated 8
+ * times so the processor can fetch it out of flash whether the flash
+ * is 8, 16, 32, or 64 bits wide (hardware trickery).
*/
- .data
- .globl version_string
-version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", __DATE__, " - ", __TIME__, ")"
- .ascii " ", CONFIG_IDENT_STRING, "\0"
-
.text
#define _HRCW_TABLE_ENTRY(w) \
.fill 8,1,(((w)>>24)&0xff); \
.fill 8,1,(((w)>> 8)&0xff); \
.fill 8,1,(((w) )&0xff)
- _HRCW_TABLE_ENTRY(CFG_HRCW_LOW)
- _HRCW_TABLE_ENTRY(CFG_HRCW_HIGH)
+ _HRCW_TABLE_ENTRY(CONFIG_SYS_HRCW_LOW)
+ _HRCW_TABLE_ENTRY(CONFIG_SYS_HRCW_HIGH)
+
+/*
+ * Magic number and version string - put it after the HRCW since it
+ * cannot be first in flash like it is in many other processors.
+ */
+ .long 0x27051956 /* U-Boot Magic Number */
+
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
+ .ascii " ", CONFIG_IDENT_STRING, "\0"
+
+ .align 2
+
+ .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 */
+ mflr r4
+ mfmsr r3
+ andi. r0, r3, (MSR_IR | MSR_DR)
+ beqlr
+ andc r3, r3, r0
+ mtspr SRR0, r4
+ mtspr SRR1, r3
+ rfi
+
+ .globl get_pvr
+get_pvr:
+ mfspr r3, PVR
+ blr
+
+ .globl ppcDWstore
+ppcDWstore:
+ lfd 1, 0(r4)
+ stfd 1, 0(r3)
+ blr
+ .globl ppcDWload
+ppcDWload:
+ lfd 1, 0(r3)
+ stfd 1, 0(r4)
+ blr
#ifndef CONFIG_DEFAULT_IMMR
#error CONFIG_DEFAULT_IMMR must be defined
-#endif /* CFG_DEFAULT_IMMR */
-#ifndef CFG_IMMRBAR
-#define CFG_IMMRBAR CONFIG_DEFAULT_IMMR
-#endif /* CFG_IMMRBAR */
+#endif /* CONFIG_SYS_DEFAULT_IMMR */
+#ifndef CONFIG_SYS_IMMR
+#define CONFIG_SYS_IMMR CONFIG_DEFAULT_IMMR
+#endif /* CONFIG_SYS_IMMR */
/*
* After configuration, a system reset exception is executed using the
nop
boot_warm: /* time t 5 */
mfmsr r5 /* save msr contents */
- lis r3, CFG_IMMRBAR@h
- ori r3, r3, CFG_IMMRBAR@l
+
+ /* 83xx manuals prescribe a specific sequence for updating IMMRBAR. */
+ bl 1f
+1: mflr r7
+
+ lis r3, CONFIG_SYS_IMMR@h
+ ori r3, r3, CONFIG_SYS_IMMR@l
+
+ lwz r6, IMMRBAR(r4)
+ isync
+
stw r3, IMMRBAR(r4)
+ lwz r6, 0(r7) /* Arbitrary external load */
+ isync
+
+ lwz r6, IMMRBAR(r3)
+ isync
/* Initialise the E300 processor core */
/*------------------------------------------*/
+#ifdef CONFIG_NAND_SPL
+ /* The FCM begins execution after only the first page
+ * is loaded. Wait for the rest before branching
+ * to another flash page.
+ */
+1: lwz r6, 0x50b0(r3)
+ andi. r6, r6, 1
+ beq 1b
+#endif
+
bl init_e300_core
-#ifndef CFG_RAMBOOT
+#ifdef CONFIG_SYS_FLASHBOOT
/* Inflate flash location so it appears everywhere, calculate */
/* the absolute address in final location of the FLASH, jump */
/* there and deflate the flash size back to minimal size */
/*------------------------------------------------------------*/
bl map_flash_by_law1
- lis r4, (CFG_MONITOR_BASE)@h
- ori r4, r4, (CFG_MONITOR_BASE)@l
+ lis r4, (CONFIG_SYS_MONITOR_BASE)@h
+ ori r4, r4, (CONFIG_SYS_MONITOR_BASE)@l
addi r5, r4, in_flash - _start + EXC_OFF_SYS_RESET
mtlr r5
blr
#if 1 /* Remapping flash with LAW0. */
bl remap_flash_by_law0
#endif
-#endif /* CFG_RAMBOOT */
+#endif /* CONFIG_SYS_FLASHBOOT */
/* setup the bats */
bl setup_bats
bl enable_addr_trans
sync
- /* enable and invalidate the data cache */
+ /* enable the data cache */
bl dcache_enable
sync
-#ifdef CFG_INIT_RAM_LOCK
+#ifdef CONFIG_SYS_INIT_RAM_LOCK
bl lock_ram_in_cache
sync
#endif
/* set up the stack pointer in our newly created
* cache-ram (r1) */
- lis r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@h
- ori r1, r1, (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET)@l
+ lis r1, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@h
+ ori r1, r1, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@l
li r0, 0 /* Make room for stack frame header and */
stwu r0, -4(r1) /* clear final stack frame so that */
GET_GOT /* initialize GOT access */
/* r3: IMMR */
- lis r3, CFG_IMMRBAR@h
+ lis r3, CONFIG_SYS_IMMR@h
/* run low-level CPU init code (in Flash)*/
bl cpu_init_f
/* run 1st part of board init code (in Flash)*/
bl board_init_f
+#ifndef CONFIG_NAND_SPL
/*
* Vector Table
*/
/* Alignment exception. */
. = 0x600
Alignment:
- EXCEPTION_PROLOG
+ EXCEPTION_PROLOG(SRR0, SRR1)
mfspr r4,DAR
stw r4,_DAR(r21)
mfspr r5,DSISR
/* Program check exception */
. = 0x700
ProgramCheck:
- EXCEPTION_PROLOG
+ EXCEPTION_PROLOG(SRR0, SRR1)
addi r3,r1,STACK_FRAME_OVERHEAD
li r20,MSR_KERNEL
rlwimi r20,r23,0,16,16 /* copy EE bit from saved MSR */
lwz r1,GPR1(r1)
SYNC
rfi
+#endif /* !CONFIG_NAND_SPL */
/*
* This code initialises the E300 processor core
mtspr SRR1, r3 /* Make SRR1 match MSR */
- lis r3, CFG_IMMRBAR@h
+ lis r3, CONFIG_SYS_IMMR@h
#if defined(CONFIG_WATCHDOG)
/* Initialise the Wathcdog values and reset it (if req) */
/*------------------------------------------------------*/
- lis r4, CFG_WATCHDOG_VALUE
+ lis r4, CONFIG_SYS_WATCHDOG_VALUE
ori r4, r4, (SWCRR_SWEN | SWCRR_SWRI | SWCRR_SWPR)
stw r4, SWCRR(r3)
li r4, 0x556C
sth r4, SWSRR@l(r3)
- li r4, 0xAA39
+ li r4, -0x55C7
sth r4, SWSRR@l(r3)
#else
/* Disable Wathcdog */
1:
#endif /* CONFIG_WATCHDOG */
+#if defined(CONFIG_MASK_AER_AO)
+ /* Write the Arbiter Event Enable to mask Address Only traps. */
+ /* This prevents the dcbz instruction from being trapped when */
+ /* HID0_ABE Address Broadcast Enable is set and the MEMORY */
+ /* COHERENCY bit is set in the WIMG bits, which is often */
+ /* needed for PCI operation. */
+ lwz r4, 0x0808(r3)
+ rlwinm r0, r4, 0, ~AER_AO
+ stw r0, 0x0808(r3)
+#endif /* CONFIG_MASK_AER_AO */
+
/* Initialize the Hardware Implementation-dependent Registers */
/* HID0 also contains cache control */
+ /* - force invalidation of data and instruction caches */
/*------------------------------------------------------*/
- lis r3, CFG_HID0_INIT@h
- ori r3, r3, CFG_HID0_INIT@l
+ lis r3, CONFIG_SYS_HID0_INIT@h
+ ori r3, r3, (CONFIG_SYS_HID0_INIT | HID0_ICFI | HID0_DCFI)@l
SYNC
mtspr HID0, r3
- lis r3, CFG_HID0_FINAL@h
- ori r3, r3, CFG_HID0_FINAL@l
+ lis r3, CONFIG_SYS_HID0_FINAL@h
+ ori r3, r3, (CONFIG_SYS_HID0_FINAL & ~(HID0_ICFI | HID0_DCFI))@l
SYNC
mtspr HID0, r3
- lis r3, CFG_HID2@h
- ori r3, r3, CFG_HID2@l
+ lis r3, CONFIG_SYS_HID2@h
+ ori r3, r3, CONFIG_SYS_HID2@l
SYNC
mtspr HID2, r3
- /* clear all BAT's */
- /*----------------------------------*/
-
- xor r0, r0, r0
- mtspr DBAT0U, r0
- mtspr DBAT0L, r0
- mtspr DBAT1U, r0
- mtspr DBAT1L, r0
- mtspr DBAT2U, r0
- mtspr DBAT2L, r0
- mtspr DBAT3U, r0
- mtspr DBAT3L, r0
- mtspr IBAT0U, r0
- mtspr IBAT0L, r0
- mtspr IBAT1U, r0
- mtspr IBAT1L, r0
- mtspr IBAT2U, r0
- mtspr IBAT2L, r0
- mtspr IBAT3U, r0
- mtspr IBAT3L, r0
- SYNC
-
- /* invalidate all tlb's
- *
- * From the 603e User Manual: "The 603e provides the ability to
- * invalidate a TLB entry. The TLB Invalidate Entry (tlbie)
- * instruction invalidates the TLB entry indexed by the EA, and
- * operates on both the instruction and data TLBs simultaneously
- * invalidating four TLB entries (both sets in each TLB). The
- * index corresponds to bits 15-19 of the EA. To invalidate all
- * entries within both TLBs, 32 tlbie instructions should be
- * issued, incrementing this field by one each time."
- *
- * "Note that the tlbia instruction is not implemented on the
- * 603e."
- *
- * bits 15-19 correspond to addresses 0x00000000 to 0x0001F000
- * incrementing by 0x1000 each time. The code below is sort of
- * based on code in "flush_tlbs" from arch/ppc/kernel/head.S
- *
- */
-
- li r3, 32
- mtctr r3
- li r3, 0
-1: tlbie r3
- addi r3, r3, 0x1000
- bdnz 1b
- SYNC
-
/* Done! */
/*------------------------------*/
blr
- .globl invalidate_bats
-invalidate_bats:
- /* invalidate BATs */
- mtspr IBAT0U, r0
- mtspr IBAT1U, r0
- mtspr IBAT2U, r0
- mtspr IBAT3U, r0
-#if (CFG_HID2 & HID2_HBE)
- mtspr IBAT4U, r0
- mtspr IBAT5U, r0
- mtspr IBAT6U, r0
- mtspr IBAT7U, r0
-#endif
- isync
- mtspr DBAT0U, r0
- mtspr DBAT1U, r0
- mtspr DBAT2U, r0
- mtspr DBAT3U, r0
-#if (CFG_HID2 & HID2_HBE)
- mtspr DBAT4U, r0
- mtspr DBAT5U, r0
- mtspr DBAT6U, r0
- mtspr DBAT7U, r0
-#endif
- isync
- sync
- blr
-
/* setup_bats - set them up to some initial state */
.globl setup_bats
setup_bats:
addis r0, r0, 0x0000
/* IBAT 0 */
- addis r4, r0, CFG_IBAT0L@h
- ori r4, r4, CFG_IBAT0L@l
- addis r3, r0, CFG_IBAT0U@h
- ori r3, r3, CFG_IBAT0U@l
+ addis r4, r0, CONFIG_SYS_IBAT0L@h
+ ori r4, r4, CONFIG_SYS_IBAT0L@l
+ addis r3, r0, CONFIG_SYS_IBAT0U@h
+ ori r3, r3, CONFIG_SYS_IBAT0U@l
mtspr IBAT0L, r4
mtspr IBAT0U, r3
- isync
/* DBAT 0 */
- addis r4, r0, CFG_DBAT0L@h
- ori r4, r4, CFG_DBAT0L@l
- addis r3, r0, CFG_DBAT0U@h
- ori r3, r3, CFG_DBAT0U@l
+ addis r4, r0, CONFIG_SYS_DBAT0L@h
+ ori r4, r4, CONFIG_SYS_DBAT0L@l
+ addis r3, r0, CONFIG_SYS_DBAT0U@h
+ ori r3, r3, CONFIG_SYS_DBAT0U@l
mtspr DBAT0L, r4
mtspr DBAT0U, r3
- isync
/* IBAT 1 */
- addis r4, r0, CFG_IBAT1L@h
- ori r4, r4, CFG_IBAT1L@l
- addis r3, r0, CFG_IBAT1U@h
- ori r3, r3, CFG_IBAT1U@l
+ addis r4, r0, CONFIG_SYS_IBAT1L@h
+ ori r4, r4, CONFIG_SYS_IBAT1L@l
+ addis r3, r0, CONFIG_SYS_IBAT1U@h
+ ori r3, r3, CONFIG_SYS_IBAT1U@l
mtspr IBAT1L, r4
mtspr IBAT1U, r3
- isync
/* DBAT 1 */
- addis r4, r0, CFG_DBAT1L@h
- ori r4, r4, CFG_DBAT1L@l
- addis r3, r0, CFG_DBAT1U@h
- ori r3, r3, CFG_DBAT1U@l
+ addis r4, r0, CONFIG_SYS_DBAT1L@h
+ ori r4, r4, CONFIG_SYS_DBAT1L@l
+ addis r3, r0, CONFIG_SYS_DBAT1U@h
+ ori r3, r3, CONFIG_SYS_DBAT1U@l
mtspr DBAT1L, r4
mtspr DBAT1U, r3
- isync
/* IBAT 2 */
- addis r4, r0, CFG_IBAT2L@h
- ori r4, r4, CFG_IBAT2L@l
- addis r3, r0, CFG_IBAT2U@h
- ori r3, r3, CFG_IBAT2U@l
+ addis r4, r0, CONFIG_SYS_IBAT2L@h
+ ori r4, r4, CONFIG_SYS_IBAT2L@l
+ addis r3, r0, CONFIG_SYS_IBAT2U@h
+ ori r3, r3, CONFIG_SYS_IBAT2U@l
mtspr IBAT2L, r4
mtspr IBAT2U, r3
- isync
/* DBAT 2 */
- addis r4, r0, CFG_DBAT2L@h
- ori r4, r4, CFG_DBAT2L@l
- addis r3, r0, CFG_DBAT2U@h
- ori r3, r3, CFG_DBAT2U@l
+ addis r4, r0, CONFIG_SYS_DBAT2L@h
+ ori r4, r4, CONFIG_SYS_DBAT2L@l
+ addis r3, r0, CONFIG_SYS_DBAT2U@h
+ ori r3, r3, CONFIG_SYS_DBAT2U@l
mtspr DBAT2L, r4
mtspr DBAT2U, r3
- isync
/* IBAT 3 */
- addis r4, r0, CFG_IBAT3L@h
- ori r4, r4, CFG_IBAT3L@l
- addis r3, r0, CFG_IBAT3U@h
- ori r3, r3, CFG_IBAT3U@l
+ addis r4, r0, CONFIG_SYS_IBAT3L@h
+ ori r4, r4, CONFIG_SYS_IBAT3L@l
+ addis r3, r0, CONFIG_SYS_IBAT3U@h
+ ori r3, r3, CONFIG_SYS_IBAT3U@l
mtspr IBAT3L, r4
mtspr IBAT3U, r3
- isync
/* DBAT 3 */
- addis r4, r0, CFG_DBAT3L@h
- ori r4, r4, CFG_DBAT3L@l
- addis r3, r0, CFG_DBAT3U@h
- ori r3, r3, CFG_DBAT3U@l
+ addis r4, r0, CONFIG_SYS_DBAT3L@h
+ ori r4, r4, CONFIG_SYS_DBAT3L@l
+ addis r3, r0, CONFIG_SYS_DBAT3U@h
+ ori r3, r3, CONFIG_SYS_DBAT3U@l
mtspr DBAT3L, r4
mtspr DBAT3U, r3
- isync
-#if (CFG_HID2 & HID2_HBE)
+#ifdef CONFIG_HIGH_BATS
/* IBAT 4 */
- addis r4, r0, CFG_IBAT4L@h
- ori r4, r4, CFG_IBAT4L@l
- addis r3, r0, CFG_IBAT4U@h
- ori r3, r3, CFG_IBAT4U@l
+ addis r4, r0, CONFIG_SYS_IBAT4L@h
+ ori r4, r4, CONFIG_SYS_IBAT4L@l
+ addis r3, r0, CONFIG_SYS_IBAT4U@h
+ ori r3, r3, CONFIG_SYS_IBAT4U@l
mtspr IBAT4L, r4
mtspr IBAT4U, r3
- isync
/* DBAT 4 */
- addis r4, r0, CFG_DBAT4L@h
- ori r4, r4, CFG_DBAT4L@l
- addis r3, r0, CFG_DBAT4U@h
- ori r3, r3, CFG_DBAT4U@l
+ addis r4, r0, CONFIG_SYS_DBAT4L@h
+ ori r4, r4, CONFIG_SYS_DBAT4L@l
+ addis r3, r0, CONFIG_SYS_DBAT4U@h
+ ori r3, r3, CONFIG_SYS_DBAT4U@l
mtspr DBAT4L, r4
mtspr DBAT4U, r3
- isync
/* IBAT 5 */
- addis r4, r0, CFG_IBAT5L@h
- ori r4, r4, CFG_IBAT5L@l
- addis r3, r0, CFG_IBAT5U@h
- ori r3, r3, CFG_IBAT5U@l
+ addis r4, r0, CONFIG_SYS_IBAT5L@h
+ ori r4, r4, CONFIG_SYS_IBAT5L@l
+ addis r3, r0, CONFIG_SYS_IBAT5U@h
+ ori r3, r3, CONFIG_SYS_IBAT5U@l
mtspr IBAT5L, r4
mtspr IBAT5U, r3
- isync
/* DBAT 5 */
- addis r4, r0, CFG_DBAT5L@h
- ori r4, r4, CFG_DBAT5L@l
- addis r3, r0, CFG_DBAT5U@h
- ori r3, r3, CFG_DBAT5U@l
+ addis r4, r0, CONFIG_SYS_DBAT5L@h
+ ori r4, r4, CONFIG_SYS_DBAT5L@l
+ addis r3, r0, CONFIG_SYS_DBAT5U@h
+ ori r3, r3, CONFIG_SYS_DBAT5U@l
mtspr DBAT5L, r4
mtspr DBAT5U, r3
- isync
/* IBAT 6 */
- addis r4, r0, CFG_IBAT6L@h
- ori r4, r4, CFG_IBAT6L@l
- addis r3, r0, CFG_IBAT6U@h
- ori r3, r3, CFG_IBAT6U@l
+ addis r4, r0, CONFIG_SYS_IBAT6L@h
+ ori r4, r4, CONFIG_SYS_IBAT6L@l
+ addis r3, r0, CONFIG_SYS_IBAT6U@h
+ ori r3, r3, CONFIG_SYS_IBAT6U@l
mtspr IBAT6L, r4
mtspr IBAT6U, r3
- isync
/* DBAT 6 */
- addis r4, r0, CFG_DBAT6L@h
- ori r4, r4, CFG_DBAT6L@l
- addis r3, r0, CFG_DBAT6U@h
- ori r3, r3, CFG_DBAT6U@l
+ addis r4, r0, CONFIG_SYS_DBAT6L@h
+ ori r4, r4, CONFIG_SYS_DBAT6L@l
+ addis r3, r0, CONFIG_SYS_DBAT6U@h
+ ori r3, r3, CONFIG_SYS_DBAT6U@l
mtspr DBAT6L, r4
mtspr DBAT6U, r3
- isync
/* IBAT 7 */
- addis r4, r0, CFG_IBAT7L@h
- ori r4, r4, CFG_IBAT7L@l
- addis r3, r0, CFG_IBAT7U@h
- ori r3, r3, CFG_IBAT7U@l
+ addis r4, r0, CONFIG_SYS_IBAT7L@h
+ ori r4, r4, CONFIG_SYS_IBAT7L@l
+ addis r3, r0, CONFIG_SYS_IBAT7U@h
+ ori r3, r3, CONFIG_SYS_IBAT7U@l
mtspr IBAT7L, r4
mtspr IBAT7U, r3
- isync
/* DBAT 7 */
- addis r4, r0, CFG_DBAT7L@h
- ori r4, r4, CFG_DBAT7L@l
- addis r3, r0, CFG_DBAT7U@h
- ori r3, r3, CFG_DBAT7U@l
+ addis r4, r0, CONFIG_SYS_DBAT7L@h
+ ori r4, r4, CONFIG_SYS_DBAT7L@l
+ addis r3, r0, CONFIG_SYS_DBAT7U@h
+ ori r3, r3, CONFIG_SYS_DBAT7U@l
mtspr DBAT7L, r4
mtspr DBAT7U, r3
- isync
#endif
- /* Invalidate TLBs.
- * -> for (val = 0; val < 0x20000; val+=0x1000)
- * -> tlbie(val);
+ isync
+
+ /* invalidate all tlb's
+ *
+ * From the 603e User Manual: "The 603e provides the ability to
+ * invalidate a TLB entry. The TLB Invalidate Entry (tlbie)
+ * instruction invalidates the TLB entry indexed by the EA, and
+ * operates on both the instruction and data TLBs simultaneously
+ * invalidating four TLB entries (both sets in each TLB). The
+ * index corresponds to bits 15-19 of the EA. To invalidate all
+ * entries within both TLBs, 32 tlbie instructions should be
+ * issued, incrementing this field by one each time."
+ *
+ * "Note that the tlbia instruction is not implemented on the
+ * 603e."
+ *
+ * bits 15-19 correspond to addresses 0x00000000 to 0x0001F000
+ * incrementing by 0x1000 each time. The code below is sort of
+ * based on code in "flush_tlbs" from arch/ppc/kernel/head.S
+ *
*/
lis r3, 0
lis r5, 2
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 */
- mflr r4
- mfmsr r3
- andi. r0, r3, (MSR_IR | MSR_DR)
- beqlr
- andc r3, r3, r0
- mtspr SRR0, r4
- mtspr SRR1, r3
- rfi
-
/* Cache functions.
*
* Note: requires that all cache bits in
icache_enable:
mfspr r3, HID0
ori r3, r3, HID0_ICE
- lis r4, 0
- ori r4, r4, HID0_ILOCK
+ li r4, HID0_ICFI|HID0_ILOCK
andc r3, r3, r4
ori r4, r3, HID0_ICFI
isync
icache_disable:
mfspr r3, HID0
lis r4, 0
- ori r4, r4, HID0_ICE|HID0_ILOCK
+ ori r4, r4, HID0_ICE|HID0_ICFI|HID0_ILOCK
andc r3, r3, r4
- ori r4, r3, HID0_ICFI
- isync
- mtspr HID0, r4 /* sets invalidate, clears enable and lock*/
isync
- mtspr HID0, r3 /* clears invalidate */
+ mtspr HID0, r3 /* clears invalidate, enable and lock */
blr
.globl icache_status
mfspr r3, HID0
li r5, HID0_DCFI|HID0_DLOCK
andc r3, r3, r5
- mtspr HID0, r3 /* no invalidate, unlock */
ori r3, r3, HID0_DCE
- ori r5, r3, HID0_DCFI
- mtspr HID0, r5 /* enable + invalidate */
- mtspr HID0, r3 /* enable */
sync
+ mtspr HID0, r3 /* enable, no invalidate */
blr
.globl dcache_disable
dcache_disable:
+ mflr r4
+ bl flush_dcache /* uses r3 and r5 */
mfspr r3, HID0
- lis r4, 0
- ori r4, r4, HID0_DCE|HID0_DLOCK
- andc r3, r3, r4
- ori r4, r3, HID0_DCI
+ li r5, HID0_DCE|HID0_DLOCK
+ andc r3, r3, r5
+ ori r5, r3, HID0_DCFI
sync
- mtspr HID0, r4 /* sets invalidate, clears enable and lock */
+ mtspr HID0, r5 /* sets invalidate, clears enable and lock */
sync
mtspr HID0, r3 /* clears invalidate */
+ mtlr r4
blr
.globl dcache_status
rlwinm r3, r3, (31 - HID0_DCE_SHIFT + 1), 31, 31
blr
- .globl get_pvr
-get_pvr:
- mfspr r3, PVR
- blr
-
-/*------------------------------------------------------------------------------- */
-/* Function: ppcDcbf */
-/* Description: Data Cache block flush */
-/* Input: r3 = effective address */
-/* Output: none. */
-/*------------------------------------------------------------------------------- */
- .globl ppcDcbf
-ppcDcbf:
- dcbf r0,r3
- blr
-
-/*------------------------------------------------------------------------------- */
-/* Function: ppcDcbi */
-/* Description: Data Cache block Invalidate */
-/* Input: r3 = effective address */
-/* Output: none. */
-/*------------------------------------------------------------------------------- */
- .globl ppcDcbi
-ppcDcbi:
- dcbi r0,r3
- blr
-
-/*--------------------------------------------------------------------------
- * Function: ppcDcbz
- * Description: Data Cache block zero.
- * Input: r3 = effective address
- * Output: none.
- *-------------------------------------------------------------------------- */
-
- .globl ppcDcbz
-ppcDcbz:
- dcbz r0,r3
- blr
+ .globl flush_dcache
+flush_dcache:
+ lis r3, 0
+ lis r5, CONFIG_SYS_CACHELINE_SIZE
+1: cmp 0, 1, r3, r5
+ bge 2f
+ lwz r5, 0(r3)
+ lis r5, CONFIG_SYS_CACHELINE_SIZE
+ addi r3, r3, 0x4
+ b 1b
+2: blr
/*-------------------------------------------------------------------*/
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
- lwz r5, GOT(__init_end)
+ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */
+ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l
+ lwz r5, GOT(__bss_start)
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)
+ * New GOT-PTR = (old GOT-PTR - CONFIG_SYS_MONITOR_BASE)
* + Destination Address
*
* Offset:
stw r0,0(r3)
bdnz 1b
+#ifndef CONFIG_NAND_SPL
/*
* Now adjust the fixups and the pointers to the fixups
* in case we need to move ourselves again.
stw r0,0(r4)
bdnz 3b
4:
+#endif
+
clear_bss:
/*
* Now clear BSS segment
mr r4, r10 /* Destination Address */
bl board_init_r
+#ifndef CONFIG_NAND_SPL
/*
* Copy exception vector code to low memory
*
stw r0, 4(r7)
blr
+#endif /* !CONFIG_NAND_SPL */
-#ifdef CFG_INIT_RAM_LOCK
+#ifdef CONFIG_SYS_INIT_RAM_LOCK
lock_ram_in_cache:
/* Allocate Initial RAM in data cache.
*/
- lis r3, (CFG_INIT_RAM_ADDR & ~31)@h
- ori r3, r3, (CFG_INIT_RAM_ADDR & ~31)@l
- li r2, ((CFG_INIT_RAM_END & ~31) + \
- (CFG_INIT_RAM_ADDR & 31) + 31) / 32
- mtctr r2
+ lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
+ ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
+ li r4, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
+ (CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
+ mtctr r4
1:
dcbz r0, r3
addi r3, r3, 32
/* Lock the data cache */
mfspr r0, HID0
- ori r0, r0, 0x1000
+ ori r0, r0, HID0_DLOCK
sync
mtspr HID0, r0
sync
blr
+#ifndef CONFIG_NAND_SPL
.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
- li r2,512
- mtctr r2
+ lis r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@h
+ ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR & ~31)@l
+ li r4, ((CONFIG_SYS_INIT_RAM_END & ~31) + \
+ (CONFIG_SYS_INIT_RAM_ADDR & 31) + 31) / 32
+ mtctr r4
1: icbi r0, r3
dcbi r0, r3
addi r3, r3, 32
li r5, HID0_DLOCK|HID0_DCFI
andc r3, r3, r5 /* no invalidate, unlock */
ori r5, r3, HID0_DCFI /* invalidate, unlock */
+ sync
mtspr HID0, r5 /* invalidate, unlock */
- mtspr HID0, r3 /* no invalidate, unlock */
sync
+ mtspr HID0, r3 /* no invalidate, unlock */
blr
-#endif
+#endif /* !CONFIG_NAND_SPL */
+#endif /* CONFIG_SYS_INIT_RAM_LOCK */
+#ifdef CONFIG_SYS_FLASHBOOT
map_flash_by_law1:
/* When booting from ROM (Flash or EPROM), clear the */
/* Address Mask in OR0 so ROM appears everywhere */
/*----------------------------------------------------*/
- lis r3, (CFG_IMMRBAR)@h /* r3 <= CFG_IMMRBAR */
+ lis r3, (CONFIG_SYS_IMMR)@h /* r3 <= CONFIG_SYS_IMMR */
lwz r4, OR0@l(r3)
li r5, 0x7fff /* r5 <= 0x00007FFFF */
and r4, r4, r5
* LBIU Local Access Widow 0 will not cover this memory space. So, we
* need another window to map in it.
*/
- lis r4, (CFG_FLASH_BASE)@h
- ori r4, r4, (CFG_FLASH_BASE)@l
- stw r4, LBLAWBAR1(r3) /* LBLAWBAR1 <= CFG_FLASH_BASE */
- lis r4, (0x80000016)@h
- ori r4, r4, (0x80000016)@l
+ lis r4, (CONFIG_SYS_FLASH_BASE)@h
+ ori r4, r4, (CONFIG_SYS_FLASH_BASE)@l
+ stw r4, LBLAWBAR1(r3) /* LBLAWBAR1 <= CONFIG_SYS_FLASH_BASE */
+
+ /* Store 0x80000012 + log2(CONFIG_SYS_FLASH_SIZE) into LBLAWAR1 */
+ lis r4, (0x80000012)@h
+ ori r4, r4, (0x80000012)@l
+ li r5, CONFIG_SYS_FLASH_SIZE
+1: srawi. r5, r5, 1 /* r5 = r5 >> 1 */
+ addi r4, r4, 1
+ bne 1b
+
stw r4, LBLAWAR1(r3) /* LBLAWAR1 <= 8MB Flash Size */
blr
lwz r4, BR0(r3)
li r5, 0x7FFF
and r4, r4, r5
- lis r5, (CFG_FLASH_BASE & 0xFFFF8000)@h
- ori r5, r5, (CFG_FLASH_BASE & 0xFFFF8000)@l
+ lis r5, (CONFIG_SYS_FLASH_BASE & 0xFFFF8000)@h
+ ori r5, r5, (CONFIG_SYS_FLASH_BASE & 0xFFFF8000)@l
or r5, r5, r4
- stw r5, BR0(r3) /* r5 <= (CFG_FLASH_BASE & 0xFFFF8000) | (BR0 & 0x00007FFF) */
+ stw r5, BR0(r3) /* r5 <= (CONFIG_SYS_FLASH_BASE & 0xFFFF8000) | (BR0 & 0x00007FFF) */
lwz r4, OR0(r3)
- lis r5, 0xFF80 /* 8M */
+ lis r5, ~((CONFIG_SYS_FLASH_SIZE << 4) - 1)
or r4, r4, r5
- stw r4, OR0(r3) /* OR0 <= OR0 | 0xFF800000 */
+ stw r4, OR0(r3)
+
+ lis r4, (CONFIG_SYS_FLASH_BASE)@h
+ ori r4, r4, (CONFIG_SYS_FLASH_BASE)@l
+ stw r4, LBLAWBAR0(r3) /* LBLAWBAR0 <= CONFIG_SYS_FLASH_BASE */
- lis r4, (CFG_FLASH_BASE)@h
- ori r4, r4, (CFG_FLASH_BASE)@l
- stw r4, LBLAWBAR0(r3) /* LBLAWBAR0 <= CFG_FLASH_BASE */
+ /* Store 0x80000012 + log2(CONFIG_SYS_FLASH_SIZE) into LBLAWAR0 */
+ lis r4, (0x80000012)@h
+ ori r4, r4, (0x80000012)@l
+ li r5, CONFIG_SYS_FLASH_SIZE
+1: srawi. r5, r5, 1 /* r5 = r5 >> 1 */
+ addi r4, r4, 1
+ bne 1b
+ stw r4, LBLAWAR0(r3) /* LBLAWAR0 <= Flash Size */
- lis r4, (0x80000016)@h
- ori r4, r4, (0x80000016)@l
- stw r4, LBLAWAR0(r3) /* LBLAWAR0 <= 8MB Flash Size */
xor r4, r4, r4
stw r4, LBLAWBAR1(r3)
stw r4, LBLAWAR1(r3) /* Off LBIU LAW1 */
blr
+#endif /* CONFIG_SYS_FLASHBOOT */
projects / karo-tx-uboot.git / blobdiff