diff options
Diffstat (limited to 'arch/ppc64/boot/main.c')
| -rw-r--r-- | arch/ppc64/boot/main.c | 86 |
1 files changed, 46 insertions, 40 deletions
diff --git a/arch/ppc64/boot/main.c b/arch/ppc64/boot/main.c index 199d9804f61c..f7ec19a2d0b0 100644 --- a/arch/ppc64/boot/main.c +++ b/arch/ppc64/boot/main.c @@ -8,38 +8,32 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ -#include "ppc32-types.h" +#include <stdarg.h> +#include <stddef.h> +#include "elf.h" +#include "page.h" +#include "string.h" +#include "stdio.h" +#include "prom.h" #include "zlib.h" -#include <linux/elf.h> -#include <linux/string.h> -#include <asm/processor.h> -#include <asm/page.h> - -extern void *finddevice(const char *); -extern int getprop(void *, const char *, void *, int); -extern void printf(const char *fmt, ...); -extern int sprintf(char *buf, const char *fmt, ...); -void gunzip(void *, int, unsigned char *, int *); -void *claim(unsigned int, unsigned int, unsigned int); -void flush_cache(void *, unsigned long); -void pause(void); -extern void exit(void); - -unsigned long strlen(const char *s); -void *memmove(void *dest, const void *src, unsigned long n); -void *memcpy(void *dest, const void *src, unsigned long n); + +static void gunzip(void *, int, unsigned char *, int *); +extern void flush_cache(void *, unsigned long); + /* Value picked to match that used by yaboot */ #define PROG_START 0x01400000 -#define RAM_END (256<<20) // Fixme: use OF */ +#define RAM_END (512<<20) // Fixme: use OF */ +#define ONE_MB 0x100000 -char *avail_ram; -char *begin_avail, *end_avail; -char *avail_high; -unsigned int heap_use; -unsigned int heap_max; +static char *avail_ram; +static char *begin_avail, *end_avail; +static char *avail_high; +static unsigned int heap_use; +static unsigned int heap_max; extern char _start[]; +extern char _end[]; extern char _vmlinux_start[]; extern char _vmlinux_end[]; extern char _initrd_start[]; @@ -52,9 +46,9 @@ struct addr_range { unsigned long size; unsigned long memsize; }; -struct addr_range vmlinux = {0, 0, 0}; -struct addr_range vmlinuz = {0, 0, 0}; -struct addr_range initrd = {0, 0, 0}; +static struct addr_range vmlinux = {0, 0, 0}; +static struct addr_range vmlinuz = {0, 0, 0}; +static struct addr_range initrd = {0, 0, 0}; static char scratch[128<<10]; /* 128kB of scratch space for gunzip */ @@ -64,22 +58,15 @@ typedef void (*kernel_entry_t)( unsigned long, void *); -int (*prom)(void *); - -void *chosen_handle; -void *stdin; -void *stdout; -void *stderr; - #undef DEBUG -static unsigned long claim_base = PROG_START; +static unsigned long claim_base; static unsigned long try_claim(unsigned long size) { unsigned long addr = 0; - for(; claim_base < RAM_END; claim_base += 0x100000) { + for(; claim_base < RAM_END; claim_base += ONE_MB) { #ifdef DEBUG printf(" trying: 0x%08lx\n\r", claim_base); #endif @@ -110,7 +97,26 @@ void start(unsigned long a1, unsigned long a2, void *promptr) if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4) exit(); - printf("\n\rzImage starting: loaded at 0x%x\n\r", (unsigned)_start); + printf("\n\rzImage starting: loaded at 0x%lx\n\r", (unsigned long) _start); + + /* + * The first available claim_base must be above the end of the + * the loaded kernel wrapper file (_start to _end includes the + * initrd image if it is present) and rounded up to a nice + * 1 MB boundary for good measure. + */ + + claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB); + +#if defined(PROG_START) + /* + * Maintain a "magic" minimum address. This keeps some older + * firmware platforms running. + */ + + if (claim_base < PROG_START) + claim_base = PROG_START; +#endif /* * Now we try to claim some memory for the kernel itself @@ -120,7 +126,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr) * size... In practice we add 1Mb, that is enough, but we should really * consider fixing the Makefile to put a _raw_ kernel in there ! */ - vmlinux_memsize += 0x100000; + vmlinux_memsize += ONE_MB; printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux_memsize); vmlinux.addr = try_claim(vmlinux_memsize); if (vmlinux.addr == 0) { @@ -277,7 +283,7 @@ void zfree(void *x, void *addr, unsigned nb) #define DEFLATED 8 -void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp) +static void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp) { z_stream s; int r, i, flags; |