diff options
| author | wdenk <wdenk> | 2003-12-06 19:49:23 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-12-06 19:49:23 +0000 |
| commit | a8c7c708a9e0051c6358718c53572a4681eaa22b (patch) | |
| tree | b560561c91725eb2f86289da61ee676787419e37 /cpu/pxa/start.S | |
| parent | fa1399ed127c8be507bf182dc7d8d61a54938d79 (diff) | |
* 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
Diffstat (limited to 'cpu/pxa/start.S')
| -rw-r--r-- | cpu/pxa/start.S | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/cpu/pxa/start.S b/cpu/pxa/start.S index a425449265..d41b414774 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 @@ _fiq: .word fiq /* * 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_start: _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 @@ reset: 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 @@ copy_loop: 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 @@ OSTIMER_BASE: .word 0x40a00000 #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: ??? */ |