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https://github.com/edk2-porting/linux-next.git
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2f0dfeaa84
This incorporates libfdt (from the source embedded in an earlier commit) into the wrapper.a library used by the bootwrapper. This includes adding a libfdt_env.h file, which the libfdt sources need in order to integrate into the bootwrapper environment, and a libfdt-wrapper.c which provides glue to connect the bootwrapper's abstract device tree callbacks to the libfdt functions. In addition, this changes the various wrapper and platform files to use libfdt functions instead of the older flatdevtree.c library. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
158 lines
3.8 KiB
C
158 lines
3.8 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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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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fdt_init(_dtb_start);
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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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