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[src/trunk]: src/sys/arch/evbarm/odroid remove *all* of my changes to odroid_...
details: https://anonhg.NetBSD.org/src/rev/2ca6a18c4e64
branches: trunk
changeset: 341869:2ca6a18c4e64
user: marty <marty%NetBSD.org@localhost>
date: Thu Nov 26 22:22:44 2015 +0000
description:
remove *all* of my changes to odroid_start.S
diffstat:
sys/arch/evbarm/odroid/odroid_start.S | 119 +++++++++++++++++++++++----------
1 files changed, 83 insertions(+), 36 deletions(-)
diffs (212 lines):
diff -r a06639e0992e -r 2ca6a18c4e64 sys/arch/evbarm/odroid/odroid_start.S
--- a/sys/arch/evbarm/odroid/odroid_start.S Thu Nov 26 21:42:18 2015 +0000
+++ b/sys/arch/evbarm/odroid/odroid_start.S Thu Nov 26 22:22:44 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: odroid_start.S,v 1.9 2015/11/26 21:27:31 marty Exp $ */
+/* $NetBSD: odroid_start.S,v 1.10 2015/11/26 22:22:44 marty Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -46,16 +46,13 @@
#include <evbarm/odroid/platform.h>
-RCSID("$NetBSD: odroid_start.S,v 1.9 2015/11/26 21:27:31 marty Exp $")
+RCSID("$NetBSD: odroid_start.S,v 1.10 2015/11/26 22:22:44 marty Exp $")
#if defined(VERBOSE_INIT_ARM)
+
#define XPUTC(n) mov r0, n; bl xputc
-#if KERNEL_BASE_VOFFSET == 0
-#define XPUTC2(n) mov r0, n; bl xputc
-#else
#define XPUTC2(n) mov r0, n; blx r11
-#endif
#ifdef __ARMEB__
#define COM_BSWAP
#endif
@@ -65,7 +62,8 @@
#endif
#define INIT_MEMSIZE 128
-#define TEMP_L1_TABLE (KERNEL_BASE - KERNEL_BASE_VOFFSET + INIT_MEMSIZE * L1_S_SIZE - L1_TABLE_SIZE)
+
+#define TEMP_L1_TABLE (KERNEL_BASE - KERNEL_BASE_VOFFSET + INIT_MEMSIZE * 0x100000 - L1_TABLE_SIZE)
#define MD_CPU_HATCH _C_LABEL(exynos_cpu_hatch)
@@ -74,12 +72,8 @@
* At this point, this code has been loaded into SDRAM
* and the MMU is off
*/
-#ifdef KERNEL_BASES_EQUAL
- .text
-#else
.section .start,"ax",%progbits
-#endif
-
+
.global _C_LABEL(odroid_start)
_C_LABEL(odroid_start):
#ifdef __ARMEB__
@@ -97,16 +91,75 @@
*/
movw r4, #:lower16:uboot_args
movt r4, #:upper16:uboot_args
-#if KERNEL_BASE_VOFFSET != 0
+ sub r4, r4, #KERNEL_BASE_VOFFSET
+ stmia r4, {r0-r3} // Save the arguments
+
+ /*
+ * Rescue passed "bootargs" env variable. This is not trivial
+ * since we can be booted using either `go' or trough `bootm'.
+ *
+ * 'go' passes R0 = argc, R1 = argv
+ * 'bootm' passes R0 = uboot_bootinfo, R3 = bootargs
+ */
+
+ movw r4, #:lower16:bootargs
+ movt r4, #:upper16:bootargs
sub r4, r4, #KERNEL_BASE_VOFFSET
-#endif
- stmia r4, {r0-r3} // Save the arguments
+
+ cmp r0, #0
+ beq 1f
+ cmp r0, #MAX_BOOT_STRING
+ bge 1f
+
+ /* `go' method */
+ cmp r0, #1 // extra argument?
+ beq 3f
+ ldr r5, [r1, #4] // load argv[1]
+2:
+ ldrb r0, [r5], #1
+ strb r0, [r4], #1
+ teq r0, #0
+ bne 2b
+
+ b 3f
+1:
+ /* `bootm' method */
+ mov r6, r0 // save binfo pointer
+
+ cmp r3, #0
+ beq 1f
+2:
+ ldrb r0, [r3], #1
+ strb r0, [r4], #1
+ teq r0, #0
+ bne 2b
+
+1:
+ cmp r6, #0 // binfo passed?
+ beq 3f
+
+ add r6, r6, #0x250 // to eth addr
+
+ movw r4, #:lower16:uboot_enaddr
+ movt r4, #:upper16:uboot_enaddr
+ mov r2, #6
+2:
+ ldrb r0, [r6], #1
+ strb r0, [r4], #1
+ subs r2, r2, #1
+ bne 2b
+
+3:
/*
* For easy and early SoC / PoP dependency, retrieve the IDs
*/
+#if 1
+ mov r6, #EXYNOS_CORE_PBASE
+#else
movw r6, #:lower16:EXYNOS_CORE_PBASE
movt r6, #:upper16:EXYNOS_CORE_PBASE
+#endif
ldr r0, [r6, #EXYNOS_PROD_ID_OFFSET] // load soc_id
@@ -152,53 +205,49 @@
*/
bl cortex_init
- XPUTC(#'C')
+ XPUTC(#67)
/*
* Set up a preliminary mapping in the MMU to allow us to run
* at KERNEL_BASE with caches on.
*/
+ adr r1, .Lmmu_init_table
movw r0, #:lower16:TEMP_L1_TABLE
movt r0, #:upper16:TEMP_L1_TABLE
- movw r1, #:lower16:.Lmmu_init_table
- movt r1, #:upper16:.Lmmu_init_table
bl arm_boot_l1pt_init
- XPUTC(#'D')
+ XPUTC(#68)
/*
* Turn on the MMU, Caches, etc.
*/
- movw r0, #:lower16:TEMP_L1_TABLE
- movt r0, #:upper16:TEMP_L1_TABLE
-#if KERNEL_BASE_VOFFSET == 0
- bl arm_cpuinit
-#else
-#if defined(VERBOSE_INIT_ARM)
- adr r11, xputc @ for XPUTC2
+#ifdef VERBOSE_INIT_ARM
+ adr r11, xputc
#endif
movw lr, #:lower16:1f
movt lr, #:upper16:1f
+ movw r0, #:lower16:TEMP_L1_TABLE
+ movt r0, #:upper16:TEMP_L1_TABLE
b arm_cpuinit
- .pushsection .text,"ax",%progbits
+
+ .pushsection .text, "ax", %progbits
+ .align 0
1:
-#endif
- XPUTC2(#'Z')
+ XPUTC2(#90)
#if defined(MULTIPROCESSOR)
#endif /* MULTIPROCESSOR */
- XPUTC2(#13) /* CR */
- XPUTC2(#10) /* LF */
+ XPUTC2(#13)
+ XPUTC2(#10)
/*
* Jump to start in locore.S, which in turn will call initarm and main.
*/
b start
-#ifndef KERNEL_BASES_EQUAL
.popsection // back to .start
-#endif
+
/* NOTREACHED */
.align 0
@@ -231,11 +280,9 @@
#if defined(VERBOSE_INIT_ARM)
.align 0
.global xputc
- .global _xputc // for C
.type xputc,%function
- #define TIMO 0x25000
-_xputc:
+#define TIMO 0x25000
xputc:
mov r2, #TIMO
mrc p15, 0, r3, c13, c0, 3 // TPIDRURO get (uart address)
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