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-rw-r--r--arch/arm/boot/Makefile2
-rw-r--r--arch/arm/boot/compressed/Makefile8
-rw-r--r--arch/arm/boot/compressed/head-at91rm9200.S57
-rw-r--r--arch/arm/boot/compressed/head-epxa10db.S5
-rw-r--r--arch/arm/boot/compressed/head.S48
5 files changed, 88 insertions, 32 deletions
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 937a353bc37c..a174d63395ea 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -15,7 +15,7 @@ include $(srctree)/$(MACHINE)/Makefile.boot
endif
# Note: the following conditions must always be true:
-# ZRELADDR == virt_to_phys(TEXTADDR)
+# ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
# PARAMS_PHYS must be within 4MB of ZRELADDR
# INITRD_PHYS must be in RAM
ZRELADDR := $(zreladdr-y)
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 6b505ce41a75..35ffe0f4ece7 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -21,10 +21,6 @@ ifeq ($(CONFIG_ARCH_SHARK),y)
OBJS += head-shark.o ofw-shark.o
endif
-ifeq ($(CONFIG_ARCH_CAMELOT),y)
-OBJS += head-epxa10db.o
-endif
-
ifeq ($(CONFIG_ARCH_L7200),y)
OBJS += head-l7200.o
endif
@@ -50,6 +46,10 @@ ifeq ($(CONFIG_PXA_SHARPSL),y)
OBJS += head-sharpsl.o
endif
+ifeq ($(CONFIG_ARCH_AT91RM9200),y)
+OBJS += head-at91rm9200.o
+endif
+
ifeq ($(CONFIG_DEBUG_ICEDCC),y)
OBJS += ice-dcc.o
endif
diff --git a/arch/arm/boot/compressed/head-at91rm9200.S b/arch/arm/boot/compressed/head-at91rm9200.S
new file mode 100644
index 000000000000..2119ea62b547
--- /dev/null
+++ b/arch/arm/boot/compressed/head-at91rm9200.S
@@ -0,0 +1,57 @@
+/*
+ * linux/arch/arm/boot/compressed/head-at91rm9200.S
+ *
+ * Copyright (C) 2003 SAN People
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#include <asm/mach-types.h>
+
+ .section ".start", "ax"
+
+ @ Atmel AT91RM9200-DK : 262
+ mov r3, #(MACH_TYPE_AT91RM9200DK & 0xff)
+ orr r3, r3, #(MACH_TYPE_AT91RM9200DK & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ Cogent CSB337 : 399
+ mov r3, #(MACH_TYPE_CSB337 & 0xff)
+ orr r3, r3, #(MACH_TYPE_CSB337 & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ Cogent CSB637 : 648
+ mov r3, #(MACH_TYPE_CSB637 & 0xff)
+ orr r3, r3, #(MACH_TYPE_CSB637 & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ Atmel AT91RM9200-EK : 705
+ mov r3, #(MACH_TYPE_AT91RM9200EK & 0xff)
+ orr r3, r3, #(MACH_TYPE_AT91RM9200EK & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ Conitec Carmeva : 769
+ mov r3, #(MACH_TYPE_CARMEVA & 0xff)
+ orr r3, r3, #(MACH_TYPE_CARMEVA & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ KwikByte KB920x : 612
+ mov r3, #(MACH_TYPE_KB9200 & 0xff)
+ orr r3, r3, #(MACH_TYPE_KB9200 & 0xff00)
+ cmp r7, r3
+ beq 99f
+
+ @ Unknown board, use the AT91RM9200DK board
+ @ mov r7, #MACH_TYPE_AT91RM9200
+ mov r7, #(MACH_TYPE_AT91RM9200DK & 0xff)
+ orr r7, r7, #(MACH_TYPE_AT91RM9200DK & 0xff00)
+
+99:
diff --git a/arch/arm/boot/compressed/head-epxa10db.S b/arch/arm/boot/compressed/head-epxa10db.S
deleted file mode 100644
index 757681f12a39..000000000000
--- a/arch/arm/boot/compressed/head-epxa10db.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <asm/mach-types.h>
-#include <asm/arch/excalibur.h>
-
- .section ".start", "ax"
- mov r7, #MACH_TYPE_CAMELOT
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 6abafb6f1844..db3389d8e027 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -84,7 +84,7 @@
kputc #'\n'
kphex r5, 8 /* decompressed kernel start */
kputc #'-'
- kphex r8, 8 /* decompressed kernel end */
+ kphex r9, 8 /* decompressed kernel end */
kputc #'>'
kphex r4, 8 /* kernel execution address */
kputc #'\n'
@@ -116,7 +116,7 @@ start:
.word start @ absolute load/run zImage address
.word _edata @ zImage end address
1: mov r7, r1 @ save architecture ID
- mov r8, #0 @ save r0
+ mov r8, r2 @ save atags pointer
#ifndef __ARM_ARCH_2__
/*
@@ -144,7 +144,7 @@ not_angel:
/*
* some architecture specific code can be inserted
- * by the linker here, but it should preserve r7 and r8.
+ * by the linker here, but it should preserve r7, r8, and r9.
*/
.text
@@ -249,16 +249,17 @@ not_relocated: mov r0, #0
* r5 = decompressed kernel start
* r6 = processor ID
* r7 = architecture ID
- * r8-r14 = unused
+ * r8 = atags pointer
+ * r9-r14 = corrupted
*/
add r1, r5, r0 @ end of decompressed kernel
adr r2, reloc_start
ldr r3, LC1
add r3, r2, r3
-1: ldmia r2!, {r8 - r13} @ copy relocation code
- stmia r1!, {r8 - r13}
- ldmia r2!, {r8 - r13}
- stmia r1!, {r8 - r13}
+1: ldmia r2!, {r9 - r14} @ copy relocation code
+ stmia r1!, {r9 - r14}
+ ldmia r2!, {r9 - r14}
+ stmia r1!, {r9 - r14}
cmp r2, r3
blo 1b
@@ -308,11 +309,12 @@ params: ldr r0, =params_phys
* r4 = kernel execution address
* r6 = processor ID
* r7 = architecture number
- * r8 = run-time address of "start"
+ * r8 = atags pointer
+ * r9 = run-time address of "start" (???)
* On exit,
- * r1, r2, r3, r8, r9, r12 corrupted
+ * r1, r2, r3, r9, r10, r12 corrupted
* This routine must preserve:
- * r4, r5, r6, r7
+ * r4, r5, r6, r7, r8
*/
.align 5
cache_on: mov r3, #8 @ cache_on function
@@ -326,15 +328,15 @@ __setup_mmu: sub r3, r4, #16384 @ Page directory size
* bits for the RAM area only.
*/
mov r0, r3
- mov r8, r0, lsr #18
- mov r8, r8, lsl #18 @ start of RAM
- add r9, r8, #0x10000000 @ a reasonable RAM size
+ mov r9, r0, lsr #18
+ mov r9, r9, lsl #18 @ start of RAM
+ add r10, r9, #0x10000000 @ a reasonable RAM size
mov r1, #0x12
orr r1, r1, #3 << 10
add r2, r3, #16384
-1: cmp r1, r8 @ if virt > start of RAM
+1: cmp r1, r9 @ if virt > start of RAM
orrhs r1, r1, #0x0c @ set cacheable, bufferable
- cmp r1, r9 @ if virt > end of RAM
+ cmp r1, r10 @ if virt > end of RAM
bichs r1, r1, #0x0c @ clear cacheable, bufferable
str r1, [r0], #4 @ 1:1 mapping
add r1, r1, #1048576
@@ -403,26 +405,28 @@ __common_cache_on:
* r5 = decompressed kernel start
* r6 = processor ID
* r7 = architecture ID
- * r8-r14 = unused
+ * r8 = atags pointer
+ * r9-r14 = corrupted
*/
.align 5
-reloc_start: add r8, r5, r0
+reloc_start: add r9, r5, r0
debug_reloc_start
mov r1, r4
1:
.rept 4
- ldmia r5!, {r0, r2, r3, r9 - r13} @ relocate kernel
- stmia r1!, {r0, r2, r3, r9 - r13}
+ ldmia r5!, {r0, r2, r3, r10 - r14} @ relocate kernel
+ stmia r1!, {r0, r2, r3, r10 - r14}
.endr
- cmp r5, r8
+ cmp r5, r9
blo 1b
debug_reloc_end
call_kernel: bl cache_clean_flush
bl cache_off
- mov r0, #0
+ mov r0, #0 @ must be zero
mov r1, r7 @ restore architecture number
+ mov r2, r8 @ restore atags pointer
mov pc, r4 @ call kernel
/*
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-26 16:34:34 +0000