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/*
* 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;
}
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