diff options
Diffstat (limited to 'arch/ppc/boot/of1275/claim.c')
-rw-r--r-- | arch/ppc/boot/of1275/claim.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/arch/ppc/boot/of1275/claim.c b/arch/ppc/boot/of1275/claim.c deleted file mode 100644 index 1ed3aeeff8a..00000000000 --- a/arch/ppc/boot/of1275/claim.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (C) Paul Mackerras 1997. - * Copyright (C) Leigh Brown 2002. - * - * 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 "of1275.h" -#include "nonstdio.h" - -/* - * 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 == OF_INVALID_HANDLE) - return 0; - if (getprop(oprom, "model", version, sizeof(version)) <= 0) - return 0; - version[sizeof(version)-1] = 0; - printf("OF version = '%s'\n", version); - if (!string_match(version, "Open Firmware, 1.") - && !string_match(version, "FirmWorks,3.")) - return 0; - chosen = finddevice("/chosen"); - if (chosen == OF_INVALID_HANDLE) { - chosen = finddevice("/chosen@0"); - if (chosen == OF_INVALID_HANDLE) { - 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 == OF_INVALID_HANDLE) { - memory = (ihandle) call_prom("open", 1, 1, "/memory@0"); - if (memory == OF_INVALID_HANDLE) { - printf("no memory node\n"); - return 0; - } - } - printf("old OF detected\n"); - return 1; -} - -void *claim(unsigned int virt, unsigned int size, unsigned int 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 virt; -} |