bafdb64577
Add support to build the PS3 flash rom image and remove some unneeded lmb calls. The PS3's lv1 loader supports loading gzipped binary images from flash rom to addr zero. The loader enters the image at addr 0x100. In this implementation a bootwrapper overlay is use to arrange for the kernel to be loaded to addr zero and to have a suitable bootwrapper entry at 0x100. To construct the rom image, 0x100 bytes from offset 0x100 in the kernel is copied to the bootwrapper symbol __system_reset_kernel. The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is then copied to offset 0x100. At runtime the bootwrapper program copies the 0x100 bytes at __system_reset_kernel to addr 0x100. zImage.ps3 is a wrapped image that contains a flat device tree, an lv1 compatible entry point, and an optional initrd. otheros.bld is the gzip compresed rom image built from zImage.ps3. otheros.bld is suitable for programming into the PS3 boot flash memory. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
162 lines
3.9 KiB
C
162 lines
3.9 KiB
C
/*
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* PS3 bootwrapper support.
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*
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* Copyright (C) 2007 Sony Computer Entertainment Inc.
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* Copyright 2007 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h>
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#include <stddef.h>
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#include "types.h"
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#include "elf.h"
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#include "string.h"
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#include "stdio.h"
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#include "page.h"
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#include "ops.h"
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extern s64 lv1_panic(u64 in_1);
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extern s64 lv1_get_logical_partition_id(u64 *out_1);
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extern s64 lv1_get_logical_ppe_id(u64 *out_1);
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extern s64 lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3,
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u64 in_4, u64 in_5, u64 *out_1, u64 *out_2);
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#ifdef DEBUG
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#define DBG(fmt...) printf(fmt)
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#else
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static inline int __attribute__ ((format (printf, 1, 2))) DBG(
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const char *fmt, ...) {return 0;}
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#endif
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BSS_STACK(4096);
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/* A buffer that may be edited by tools operating on a zImage binary so as to
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* edit the command line passed to vmlinux (by setting /chosen/bootargs).
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* The buffer is put in it's own section so that tools may locate it easier.
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*/
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static char cmdline[COMMAND_LINE_SIZE]
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__attribute__((__section__("__builtin_cmdline")));
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static void prep_cmdline(void *chosen)
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{
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if (cmdline[0] == '\0')
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getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1);
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else
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setprop_str(chosen, "bootargs", cmdline);
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printf("cmdline: '%s'\n", cmdline);
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}
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static void ps3_console_write(const char *buf, int len)
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{
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}
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static void ps3_exit(void)
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{
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printf("ps3_exit\n");
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/* lv1_panic will shutdown the lpar. */
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lv1_panic(0); /* zero = do not reboot */
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while (1);
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}
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static int ps3_repository_read_rm_size(u64 *rm_size)
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{
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s64 result;
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u64 lpar_id;
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u64 ppe_id;
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u64 v2;
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result = lv1_get_logical_partition_id(&lpar_id);
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if (result)
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return -1;
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result = lv1_get_logical_ppe_id(&ppe_id);
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if (result)
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return -1;
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/*
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* n1: 0000000062690000 : ....bi..
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* n2: 7075000000000000 : pu......
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* n3: 0000000000000001 : ........
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* n4: 726d5f73697a6500 : rm_size.
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*/
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result = lv1_get_repository_node_value(lpar_id, 0x0000000062690000ULL,
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0x7075000000000000ULL, ppe_id, 0x726d5f73697a6500ULL, rm_size,
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&v2);
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printf("%s:%d: ppe_id %lu \n", __func__, __LINE__,
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(unsigned long)ppe_id);
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printf("%s:%d: lpar_id %lu \n", __func__, __LINE__,
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(unsigned long)lpar_id);
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printf("%s:%d: rm_size %llxh \n", __func__, __LINE__, *rm_size);
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return result ? -1 : 0;
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}
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void ps3_copy_vectors(void)
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{
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extern char __system_reset_kernel[];
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memcpy((void *)0x100, __system_reset_kernel, 0x100);
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flush_cache((void *)0x100, 0x100);
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}
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void platform_init(void)
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{
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extern char _end[];
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extern char _dtb_start[];
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extern char _initrd_start[];
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extern char _initrd_end[];
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const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */
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void *chosen;
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unsigned long ft_addr;
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u64 rm_size;
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console_ops.write = ps3_console_write;
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platform_ops.exit = ps3_exit;
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printf("\n-- PS3 bootwrapper --\n");
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simple_alloc_init(_end, heapsize, 32, 64);
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ft_init(_dtb_start, 0, 4);
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chosen = finddevice("/chosen");
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ps3_repository_read_rm_size(&rm_size);
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dt_fixup_memory(0, rm_size);
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if (_initrd_end > _initrd_start) {
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setprop_val(chosen, "linux,initrd-start", (u32)(_initrd_start));
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setprop_val(chosen, "linux,initrd-end", (u32)(_initrd_end));
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}
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prep_cmdline(chosen);
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ft_addr = dt_ops.finalize();
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ps3_copy_vectors();
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printf(" flat tree at 0x%lx\n\r", ft_addr);
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((kernel_entry_t)0)(ft_addr, 0, NULL);
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ps3_exit();
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}
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