diff options
Diffstat (limited to 'arch/powerpc/boot/of.c')
| -rw-r--r-- | arch/powerpc/boot/of.c | 212 |
1 files changed, 4 insertions, 208 deletions
diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c index d16ee3e..385e08b 100644 --- a/arch/powerpc/boot/of.c +++ b/arch/powerpc/boot/of.c @@ -15,8 +15,7 @@ #include "page.h" #include "ops.h" -typedef void *ihandle; -typedef void *phandle; +#include "of.h" extern char _end[]; @@ -25,154 +24,10 @@ extern char _end[]; #define RAM_END (512<<20) /* Fixme: use OF */ #define ONE_MB 0x100000 -int (*prom) (void *); static unsigned long claim_base; -static int call_prom(const char *service, int nargs, int nret, ...) -{ - int i; - struct prom_args { - const char *service; - int nargs; - int nret; - unsigned int args[12]; - } args; - va_list list; - - args.service = service; - args.nargs = nargs; - args.nret = nret; - - va_start(list, nret); - for (i = 0; i < nargs; i++) - args.args[i] = va_arg(list, unsigned int); - va_end(list); - - for (i = 0; i < nret; i++) - args.args[nargs+i] = 0; - - if (prom(&args) < 0) - return -1; - - return (nret > 0)? args.args[nargs]: 0; -} - -static int call_prom_ret(const char *service, int nargs, int nret, - unsigned int *rets, ...) -{ - int i; - struct prom_args { - const char *service; - int nargs; - int nret; - unsigned int args[12]; - } args; - va_list list; - - args.service = service; - args.nargs = nargs; - args.nret = nret; - - va_start(list, rets); - for (i = 0; i < nargs; i++) - args.args[i] = va_arg(list, unsigned int); - va_end(list); - - for (i = 0; i < nret; i++) - args.args[nargs+i] = 0; - - if (prom(&args) < 0) - return -1; - - if (rets != (void *) 0) - for (i = 1; i < nret; ++i) - rets[i-1] = args.args[nargs+i]; - - return (nret > 0)? args.args[nargs]: 0; -} - -/* - * Older OF's require that when claiming a specific range of addresses, - * we claim the physical space in the /memory node and the virtual - * space in the chosen mmu node, and then do a map operation to - * map virtual to physical. - */ -static int need_map = -1; -static ihandle chosen_mmu; -static phandle memory; - -/* returns true if s2 is a prefix of s1 */ -static int string_match(const char *s1, const char *s2) -{ - for (; *s2; ++s2) - if (*s1++ != *s2) - return 0; - return 1; -} - -static int check_of_version(void) -{ - phandle oprom, chosen; - char version[64]; - - oprom = finddevice("/openprom"); - if (oprom == (phandle) -1) - return 0; - if (getprop(oprom, "model", version, sizeof(version)) <= 0) - return 0; - version[sizeof(version)-1] = 0; - printf("OF version = '%s'\r\n", version); - if (!string_match(version, "Open Firmware, 1.") - && !string_match(version, "FirmWorks,3.")) - return 0; - chosen = finddevice("/chosen"); - if (chosen == (phandle) -1) { - chosen = finddevice("/chosen@0"); - if (chosen == (phandle) -1) { - printf("no chosen\n"); - return 0; - } - } - if (getprop(chosen, "mmu", &chosen_mmu, sizeof(chosen_mmu)) <= 0) { - printf("no mmu\n"); - return 0; - } - memory = (ihandle) call_prom("open", 1, 1, "/memory"); - if (memory == (ihandle) -1) { - memory = (ihandle) call_prom("open", 1, 1, "/memory@0"); - if (memory == (ihandle) -1) { - printf("no memory node\n"); - return 0; - } - } - printf("old OF detected\r\n"); - return 1; -} - -static void *claim(unsigned long virt, unsigned long size, unsigned long align) -{ - int ret; - unsigned int result; - - if (need_map < 0) - need_map = check_of_version(); - if (align || !need_map) - return (void *) call_prom("claim", 3, 1, virt, size, align); - - ret = call_prom_ret("call-method", 5, 2, &result, "claim", memory, - align, size, virt); - if (ret != 0 || result == -1) - return (void *) -1; - ret = call_prom_ret("call-method", 5, 2, &result, "claim", chosen_mmu, - align, size, virt); - /* 0x12 == coherent + read/write */ - ret = call_prom("call-method", 6, 1, "map", chosen_mmu, - 0x12, size, virt, virt); - return (void *) virt; -} - static void *of_try_claim(unsigned long size) { unsigned long addr = 0; @@ -184,7 +39,7 @@ static void *of_try_claim(unsigned long size) #ifdef DEBUG printf(" trying: 0x%08lx\n\r", claim_base); #endif - addr = (unsigned long)claim(claim_base, size, 0); + addr = (unsigned long)of_claim(claim_base, size, 0); if ((void *)addr != (void *)-1) break; } @@ -208,64 +63,6 @@ static void of_image_hdr(const void *hdr) } } -static void *of_vmlinux_alloc(unsigned long size) -{ - void *p = malloc(size); - - if (!p) - fatal("Can't allocate memory for kernel image!\n\r"); - - return p; -} - -static void of_exit(void) -{ - call_prom("exit", 0, 0); -} - -/* - * OF device tree routines - */ -static void *of_finddevice(const char *name) -{ - return (phandle) call_prom("finddevice", 1, 1, name); -} - -static int of_getprop(const void *phandle, const char *name, void *buf, - const int buflen) -{ - return call_prom("getprop", 4, 1, phandle, name, buf, buflen); -} - -static int of_setprop(const void *phandle, const char *name, const void *buf, - const int buflen) -{ - return call_prom("setprop", 4, 1, phandle, name, buf, buflen); -} - -/* - * OF console routines - */ -static void *of_stdout_handle; - -static int of_console_open(void) -{ - void *devp; - - if (((devp = finddevice("/chosen")) != NULL) - && (getprop(devp, "stdout", &of_stdout_handle, - sizeof(of_stdout_handle)) - == sizeof(of_stdout_handle))) - return 0; - - return -1; -} - -static void of_console_write(char *buf, int len) -{ - call_prom("write", 3, 1, of_stdout_handle, buf, len); -} - void platform_init(unsigned long a1, unsigned long a2, void *promptr) { platform_ops.image_hdr = of_image_hdr; @@ -277,10 +74,9 @@ void platform_init(unsigned long a1, unsigned long a2, void *promptr) dt_ops.getprop = of_getprop; dt_ops.setprop = of_setprop; - console_ops.open = of_console_open; - console_ops.write = of_console_write; + of_console_init(); - prom = (int (*)(void *))promptr; + of_init(promptr); loader_info.promptr = promptr; if (a1 && a2 && a2 != 0xdeadbeef) { loader_info.initrd_addr = a1; |
