* Patch by Gleb Natapov, 19 Sep 2003:
Move most of the timer interrupt related PPC code to ppc_lib/interrupts.c
* Patch by Anders Larsen, 17 Sep 2003:
Bring ARM memory layout in sync with the documentation:
stack and malloc-heap are now located _below_ the U-Boot code
diff --git a/cpu/pxa/cpu.c b/cpu/pxa/cpu.c
index 6b82f04..32ec4f6 100644
--- a/cpu/pxa/cpu.c
+++ b/cpu/pxa/cpu.c
@@ -37,22 +37,15 @@
int cpu_init (void)
{
/*
- * setup up stack if necessary
+ * setup up stacks if necessary
*/
-/*
-
- FIXME: the stack is _below_ the uboot code!!
-
#ifdef CONFIG_USE_IRQ
- IRQ_STACK_START = _armboot_end +
- CONFIG_STACKSIZE + CONFIG_STACKSIZE_IRQ - 4;
- FIQ_STACK_START = IRQ_STACK_START + CONFIG_STACKSIZE_FIQ;
- _armboot_real_end = FIQ_STACK_START + 4;
-#else
- _armboot_real_end = _armboot_end + CONFIG_STACKSIZE;
+ DECLARE_GLOBAL_DATA_PTR;
+
+ IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4;
+ FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
-*/
- return (0);
+ return 0;
}
int cleanup_before_linux (void)
diff --git a/cpu/pxa/start.S b/cpu/pxa/start.S
index a425449..d41b414 100644
--- a/cpu/pxa/start.S
+++ b/cpu/pxa/start.S
@@ -4,10 +4,10 @@
* Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
* Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
* Copyright (C) 2000 Wolfgang Denk <wd@denx.de>
- * Copyright (C) 2001 Alex Züpke <azu@sysgo.de>
+ * Copyright (C) 2001 Alex Zuepke <azu@sysgo.de>
* Copyright (C) 2002 Kyle Harris <kharris@nexus-tech.net>
* Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>
- * Copyright (C) 2003 Kai-Uwe Bloehm <kai-uwe.bloem@auerswald.de>
+ * Copyright (C) 2003 Kai-Uwe Bloem <kai-uwe.bloem@auerswald.de>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -55,7 +55,7 @@
/*
* Startup Code (reset vector)
*
- * do important init only if we don't start from memory!
+ * do important init only if we don't start from RAM!
* - relocate armboot to ram
* - setup stack
* - jump to second stage
@@ -91,21 +91,6 @@
_bss_end:
.word bss_end
-/*
- * _armboot_real_end is the first usable RAM address behind armboot
- * and the various stacks
- */
-.globl _armboot_real_end
-_armboot_real_end:
- .word 0x0badc0de
-
-/*
- * We relocate uboot to this address (end of RAM - 128 KiB)
- */
-.globl _uboot_reloc
-_uboot_reloc:
- .word TEXT_BASE
-
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
@@ -131,7 +116,13 @@
orr r0,r0,#0x13
msr cpsr,r0
+ /*
+ * we do sys-critical inits only at reboot,
+ * not when booting from ram!
+ */
+#ifdef CONFIG_INIT_CRITICAL
bl cpu_init_crit /* we do sys-critical inits */
+#endif
relocate: /* relocate U-Boot to RAM */
adr r0, _start /* r0 <- current position of code */
@@ -151,12 +142,13 @@
ble copy_loop
/* Set up the stack */
-
stack_setup:
-
- ldr r0, _uboot_reloc /* upper 128 KiB: relocated uboot */
- sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
- /* FIXME: bdinfo should be here */
+ ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
+ sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
+ sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo */
+#ifdef CONFIG_USE_IRQ
+ sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
+#endif
sub sp, r0, #12 /* leave 3 words for abort-stack */
clear_bss:
@@ -202,9 +194,13 @@
#define OIER 0x1C
/* Clock Manager Registers */
+#ifdef CFG_CPUSPEED
CC_BASE: .word 0x41300000
#define CCCR 0x00
cpuspeed: .word CFG_CPUSPEED
+#else
+#error "You have to define CFG_CPUSPEED!!"
+#endif
/* RS: ??? */