diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/boot/of.c | 188 | ||||
| -rw-r--r-- | arch/powerpc/boot/of.h | 15 | ||||
| -rw-r--r-- | arch/powerpc/boot/ofconsole.c | 45 | ||||
| -rw-r--r-- | arch/powerpc/boot/oflib.c | 172 |
5 files changed, 240 insertions, 182 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index ff2701949ee..fa195fbd051 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -43,7 +43,7 @@ $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \ src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ ns16550.c serial.c simple_alloc.c div64.S util.S \ - gunzip_util.c elf_util.c $(zlib) devtree.c \ + gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \ 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \ cuboot-ebony.c treeboot-ebony.c prpmc2800.c diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c index d16ee3e3f86..6108aef28f0 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; } @@ -218,52 +73,24 @@ static void *of_vmlinux_alloc(unsigned long size) 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); + return (phandle) of_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); + return of_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); + return of_call_prom("setprop", 4, 1, phandle, name, buf, buflen); } void platform_init(unsigned long a1, unsigned long a2, void *promptr) @@ -277,10 +104,9 @@ 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; diff --git a/arch/powerpc/boot/of.h b/arch/powerpc/boot/of.h new file mode 100644 index 00000000000..169d3110699 --- /dev/null +++ b/arch/powerpc/boot/of.h @@ -0,0 +1,15 @@ +#ifndef _PPC_BOOT_OF_H_ +#define _PPC_BOOT_OF_H_ + +typedef void *phandle; +typedef void *ihandle; + +void of_init(void *promptr); +int of_call_prom(const char *service, int nargs, int nret, ...); +void *of_claim(unsigned long virt, unsigned long size, unsigned long align); +void of_exit(void); + +/* Console functions */ +void of_console_init(void); + +#endif /* _PPC_BOOT_OF_H_ */ diff --git a/arch/powerpc/boot/ofconsole.c b/arch/powerpc/boot/ofconsole.c new file mode 100644 index 00000000000..00c9dc92dd2 --- /dev/null +++ b/arch/powerpc/boot/ofconsole.c @@ -0,0 +1,45 @@ +/* + * OF console routines + * + * Copyright (C) Paul Mackerras 1997. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <stddef.h> +#include "types.h" +#include "elf.h" +#include "string.h" +#include "stdio.h" +#include "page.h" +#include "ops.h" + +#include "of.h" + +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) +{ + of_call_prom("write", 3, 1, of_stdout_handle, buf, len); +} + +void of_console_init(void) +{ + console_ops.open = of_console_open; + console_ops.write = of_console_write; +} diff --git a/arch/powerpc/boot/oflib.c b/arch/powerpc/boot/oflib.c new file mode 100644 index 00000000000..e9b95d8ae7f --- /dev/null +++ b/arch/powerpc/boot/oflib.c @@ -0,0 +1,172 @@ +/* + * Copyright (C) Paul Mackerras 1997. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <stddef.h> +#include "types.h" +#include "elf.h" +#include "string.h" +#include "stdio.h" +#include "page.h" +#include "ops.h" + +#include "of.h" + +static int (*prom) (void *); + +void of_init(void *promptr) +{ + prom = (int (*)(void *))promptr; +} + +int of_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 of_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; +} + +/* 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; +} + +/* + * 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; + +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) of_call_prom("open", 1, 1, "/memory"); + if (memory == (ihandle) -1) { + memory = (ihandle) of_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; +} + +void *of_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 *) of_call_prom("claim", 3, 1, virt, size, align); + + ret = of_call_prom_ret("call-method", 5, 2, &result, "claim", memory, + align, size, virt); + if (ret != 0 || result == -1) + return (void *) -1; + ret = of_call_prom_ret("call-method", 5, 2, &result, "claim", chosen_mmu, + align, size, virt); + /* 0x12 == coherent + read/write */ + ret = of_call_prom("call-method", 6, 1, "map", chosen_mmu, + 0x12, size, virt, virt); + return (void *) virt; +} + +void of_exit(void) +{ + of_call_prom("exit", 0, 0); +} |