| /* |
| * This file is part of the bayou project. |
| * |
| * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "bayou.h" |
| #include "self.h" |
| |
| static int nop_decompress(void *dst, void *src, int len) |
| { |
| memcpy(dst, src, len); |
| return len; |
| } |
| |
| #ifdef CONFIG_LZMA |
| extern int ulzma(u8 *, u8 *); |
| |
| static int lzma_decompress(void *dst, void *src, int len) |
| { |
| return ulzma((u8 *) src, (u8 *) dst); |
| } |
| #endif |
| |
| #ifdef CONFIG_NRV2B |
| extern int unrv2b(u8 *, u8 *, unsigned long *); |
| |
| static int nrv2b_decompress(void *dst, void *src, int len) |
| { |
| unsigned long l = (u32) len; |
| return unrv2b(src, dst, &l); |
| } |
| #endif |
| |
| static int zeros_decompress(void *dst, void *src, int len) |
| { |
| memset(dst, 0, len); |
| return len; |
| } |
| |
| int self_get_params(u8 *fptr, u8 **params) |
| { |
| struct self_segment *seg = (struct self_segment *)fptr; |
| |
| while (seg->type != SELF_TYPE_ENTRY) { |
| if (seg->type == 0) |
| return -1; |
| |
| if (seg->type == SELF_TYPE_PARAMS) { |
| *params = (u8 *) (fptr + seg->offset); |
| return seg->len; |
| } |
| |
| seg++; |
| } |
| |
| *params = NULL; |
| |
| return 0; |
| } |
| |
| int verify_self(u8 *ptr) |
| { |
| struct self_segment *seg = (struct self_segment *)ptr; |
| |
| switch (seg->type) { |
| case SELF_TYPE_CODE: |
| case SELF_TYPE_DATA: |
| case SELF_TYPE_BSS: |
| case SELF_TYPE_PARAMS: |
| case SELF_TYPE_ENTRY: |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| int self_load_and_run(struct payload *p, int *ret) |
| { |
| struct self_segment *seg = (struct self_segment *)p->fptr; |
| int (*dcmp) (void *, void *, int); |
| int dlen; |
| |
| switch (p->stat.compression) { |
| #ifdef CONFIG_LZMA |
| case ALGO_LZMA: |
| dcmp = lzma_decompress; |
| break; |
| #endif |
| #ifdef CONFIG_NRV2B |
| case ALGO_NRV2B: |
| dcmp = nrv2b_decompress; |
| break; |
| #endif |
| case ALGO_ZEROES: |
| dcmp = zeros_decompress; |
| break; |
| case ALGO_NONE: |
| dcmp = nop_decompress; |
| default: |
| printf("E: Unsupported decompression type\n"); |
| return -1; |
| } |
| |
| while (1) { |
| u32 laddr = (u32) (seg->load_addr & 0xFFFFFFFF); |
| |
| switch (seg->type) { |
| case SELF_TYPE_CODE: |
| case SELF_TYPE_DATA: |
| dlen = dcmp((void *)laddr, |
| (void *)p->fptr + seg->offset, seg->len); |
| |
| if (dlen < seg->mem_len) { |
| memset((void *)(laddr + dlen), 0, |
| seg->mem_len - dlen); |
| } |
| break; |
| |
| case SELF_TYPE_BSS: |
| memset((void *)laddr, 0, seg->len); |
| break; |
| case SELF_TYPE_ENTRY: |
| *ret = exec(laddr, 0, NULL); |
| return 0; |
| default: |
| break; |
| } |
| |
| seg++; |
| } |
| |
| return -1; |
| } |