diff options
Diffstat (limited to 'arch/powerpc/boot/ps3.c')
| -rw-r--r-- | arch/powerpc/boot/ps3.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c new file mode 100644 index 000000000..4ec2d86d3 --- /dev/null +++ b/arch/powerpc/boot/ps3.c @@ -0,0 +1,164 @@ +/* + * PS3 bootwrapper support. + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + * + * 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; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <stdarg.h> +#include <stddef.h> +#include "types.h" +#include "elf.h" +#include "string.h" +#include "stdio.h" +#include "page.h" +#include "ops.h" + +extern int lv1_panic(u64 in_1); +extern int lv1_get_logical_partition_id(u64 *out_1); +extern int lv1_get_logical_ppe_id(u64 *out_1); +extern int lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3, + u64 in_4, u64 in_5, u64 *out_1, u64 *out_2); + +#ifdef DEBUG +#define DBG(fmt...) printf(fmt) +#else +static inline int __attribute__ ((format (printf, 1, 2))) DBG( + const char *fmt, ...) {return 0;} +#endif + +BSS_STACK(4096); + +/* A buffer that may be edited by tools operating on a zImage binary so as to + * edit the command line passed to vmlinux (by setting /chosen/bootargs). + * The buffer is put in it's own section so that tools may locate it easier. + */ + +static char cmdline[BOOT_COMMAND_LINE_SIZE] + __attribute__((__section__("__builtin_cmdline"))); + +static void prep_cmdline(void *chosen) +{ + if (cmdline[0] == '\0') + getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1); + else + setprop_str(chosen, "bootargs", cmdline); + + printf("cmdline: '%s'\n", cmdline); +} + +static void ps3_console_write(const char *buf, int len) +{ +} + +static void ps3_exit(void) +{ + printf("ps3_exit\n"); + + /* lv1_panic will shutdown the lpar. */ + + lv1_panic(0); /* zero = do not reboot */ + while (1); +} + +static int ps3_repository_read_rm_size(u64 *rm_size) +{ + int result; + u64 lpar_id; + u64 ppe_id; + u64 v2; + + result = lv1_get_logical_partition_id(&lpar_id); + + if (result) + return -1; + + result = lv1_get_logical_ppe_id(&ppe_id); + + if (result) + return -1; + + /* + * n1: 0000000062690000 : ....bi.. + * n2: 7075000000000000 : pu...... + * n3: 0000000000000001 : ........ + * n4: 726d5f73697a6500 : rm_size. + */ + + result = lv1_get_repository_node_value(lpar_id, 0x0000000062690000ULL, + 0x7075000000000000ULL, ppe_id, 0x726d5f73697a6500ULL, rm_size, + &v2); + + printf("%s:%d: ppe_id %lu \n", __func__, __LINE__, + (unsigned long)ppe_id); + printf("%s:%d: lpar_id %lu \n", __func__, __LINE__, + (unsigned long)lpar_id); + printf("%s:%d: rm_size %llxh \n", __func__, __LINE__, *rm_size); + + return result ? -1 : 0; +} + +void ps3_copy_vectors(void) +{ + extern char __system_reset_kernel[]; + + memcpy((void *)0x100, __system_reset_kernel, 512); + flush_cache((void *)0x100, 512); +} + +void platform_init(unsigned long null_check) +{ + const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */ + void *chosen; + unsigned long ft_addr; + u64 rm_size; + unsigned long val; + + console_ops.write = ps3_console_write; + platform_ops.exit = ps3_exit; + + printf("\n-- PS3 bootwrapper --\n"); + + simple_alloc_init(_end, heapsize, 32, 64); + fdt_init(_dtb_start); + + chosen = finddevice("/chosen"); + + ps3_repository_read_rm_size(&rm_size); + dt_fixup_memory(0, rm_size); + + if (_initrd_end > _initrd_start) { + setprop_val(chosen, "linux,initrd-start", (u32)(_initrd_start)); + setprop_val(chosen, "linux,initrd-end", (u32)(_initrd_end)); + } + + prep_cmdline(chosen); + + ft_addr = dt_ops.finalize(); + + ps3_copy_vectors(); + + printf(" flat tree at 0x%lx\n\r", ft_addr); + + val = *(unsigned long *)0; + + if (val != null_check) + printf("null check failed: %lx != %lx\n\r", val, null_check); + + ((kernel_entry_t)0)(ft_addr, 0, NULL); + + ps3_exit(); +} |