summaryrefslogtreecommitdiff
path: root/board/sandpoint/early_init.S
diff options
context:
space:
mode:
Diffstat (limited to 'board/sandpoint/early_init.S')
-rw-r--r--board/sandpoint/early_init.S137
1 files changed, 0 insertions, 137 deletions
diff --git a/board/sandpoint/early_init.S b/board/sandpoint/early_init.S
deleted file mode 100644
index 5a9b924..0000000
--- a/board/sandpoint/early_init.S
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * (C) Copyright 2001
- * Thomas Koeller, tkoeller@gmx.net
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef __ASSEMBLY__
-#define __ASSEMBLY__ 1
-#endif
-
-#include <asm-offsets.h>
-#include <config.h>
-#include <asm/processor.h>
-#include <mpc824x.h>
-#include <ppc_asm.tmpl>
-
-#if defined(USE_DINK32)
- /* We are running from RAM, so do not clear the MCCR1_MEMGO bit! */
- #define MCCR1VAL ((CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT) | MCCR1_MEMGO)
-#else
- #define MCCR1VAL (CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT)
-#endif
-
- .text
-
- /* Values to program into memory controller registers */
-tbl: .long MCCR1, MCCR1VAL
- .long MCCR2, CONFIG_SYS_REFINT << MCCR2_REFINT_SHIFT
- .long MCCR3
- .long (((CONFIG_SYS_BSTOPRE & 0x000000f0) >> 4) << MCCR3_BSTOPRE2TO5_SHIFT) | \
- (CONFIG_SYS_REFREC << MCCR3_REFREC_SHIFT) | \
- (CONFIG_SYS_RDLAT << MCCR3_RDLAT_SHIFT)
- .long MCCR4
- .long (CONFIG_SYS_PRETOACT << MCCR4_PRETOACT_SHIFT) | (CONFIG_SYS_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) | \
- (CONFIG_SYS_REGISTERD_TYPE_BUFFER << 20) | \
- (((CONFIG_SYS_BSTOPRE & 0x00000300) >> 8) << MCCR4_BSTOPRE0TO1_SHIFT ) | \
- ((CONFIG_SYS_SDMODE_CAS_LAT << 4) | (CONFIG_SYS_SDMODE_WRAP << 3) | \
- (CONFIG_SYS_SDMODE_BURSTLEN) << MCCR4_SDMODE_SHIFT) | \
- (CONFIG_SYS_ACTTORW << MCCR4_ACTTORW_SHIFT) | \
- ((CONFIG_SYS_BSTOPRE & 0x0000000f) << MCCR4_BSTOPRE6TO9_SHIFT )
- .long MSAR1
- .long (((CONFIG_SYS_BANK0_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK1_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK2_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK3_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
- .long EMSAR1
- .long (((CONFIG_SYS_BANK0_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK1_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK2_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK3_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
- .long MSAR2
- .long (((CONFIG_SYS_BANK4_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK5_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK6_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK7_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
- .long EMSAR2
- .long (((CONFIG_SYS_BANK4_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK5_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK6_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK7_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
- .long MEAR1
- .long (((CONFIG_SYS_BANK0_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK1_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK2_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK3_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
- .long EMEAR1
- .long (((CONFIG_SYS_BANK0_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK1_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK2_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK3_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
- .long MEAR2
- .long (((CONFIG_SYS_BANK4_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK5_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK6_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK7_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
- .long EMEAR2
- .long (((CONFIG_SYS_BANK4_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
- (((CONFIG_SYS_BANK5_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
- (((CONFIG_SYS_BANK6_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
- (((CONFIG_SYS_BANK7_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
- .long 0
-
-
- /*
- * Early CPU initialization. Set up memory controller, so we can access any RAM at all. This
- * must be done in assembly, since we have no stack at this point.
- */
- .global early_init_f
-early_init_f:
- mflr r10
-
- /* basic memory controller configuration */
- lis r3, CONFIG_ADDR_HIGH
- lis r4, CONFIG_DATA_HIGH
- bl lab
-lab: mflr r5
- lwzu r0, tbl - lab(r5)
-loop: lwz r1, 4(r5)
- stwbrx r0, 0, r3
- eieio
- stwbrx r1, 0, r4
- eieio
- lwzu r0, 8(r5)
- cmpli cr0, 0, r0, 0
- bne cr0, loop
-
- /* set bank enable bits */
- lis r0, MBER@h
- ori r0, 0, MBER@l
- li r1, CONFIG_SYS_BANK_ENABLE
- stwbrx r0, 0, r3
- eieio
- stb r1, 0(r4)
- eieio
-
- /* delay loop */
- lis r0, 0x0003
- mtctr r0
-delay: bdnz delay
-
- /* enable memory controller */
- lis r0, MCCR1@h
- ori r0, 0, MCCR1@l
- stwbrx r0, 0, r3
- eieio
- lwbrx r0, 0, r4
- oris r0, 0, MCCR1_MEMGO@h
- stwbrx r0, 0, r4
- eieio
-
- /* set up stack pointer */
- lis r1, CONFIG_SYS_INIT_SP_OFFSET@h
- ori r1, r1, CONFIG_SYS_INIT_SP_OFFSET@l
-
- mtlr r10
- blr