diff options
Diffstat (limited to 'cpu/pxa')
| -rw-r--r-- | cpu/pxa/cpu.c | 19 | ||||
| -rw-r--r-- | cpu/pxa/start.S | 42 |
2 files changed, 25 insertions, 36 deletions
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 @@ _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: ??? */ |