mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-11-16 16:21:26 +01:00
54841ab50c
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands. Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".
This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:
int main (int argc, char **argv)
{
while (--argc > 0 && **++argv == '-') {
/* ====> */ while (*++*argv) {
switch (**argv) {
case 'd':
debug++;
break;
...
default:
usage ();
}
}
}
...
}
The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell. With the modification, the compiler will prevent this with
an
error: increment of read-only location '*argv'
N.B.: The code above can be trivially rewritten like this:
while (--argc > 0 && **++argv == '-') {
char *arg = *argv;
while (*++arg) {
switch (*arg) {
...
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
|
|
* Copyright (C) 2008 Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
|
|
*
|
|
* 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; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* 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 <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/pci.h>
|
|
#include <netdev.h>
|
|
|
|
int checkboard(void)
|
|
{
|
|
puts("BOARD: Renesas Technology Corp. R0P7785LC0011RL\n");
|
|
return 0;
|
|
}
|
|
|
|
int board_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int dram_init(void)
|
|
{
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
|
|
gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
|
|
printf("DRAM: %dMB\n", CONFIG_SYS_SDRAM_SIZE / (1024 * 1024));
|
|
return 0;
|
|
}
|
|
|
|
static struct pci_controller hose;
|
|
void pci_init_board(void)
|
|
{
|
|
pci_sh7780_init(&hose);
|
|
}
|
|
|
|
int board_eth_init(bd_t *bis)
|
|
{
|
|
return pci_eth_init(bis);
|
|
}
|
|
|
|
#if defined(CONFIG_SH_32BIT)
|
|
int do_pmb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
/* clear ITLB */
|
|
writel(0x00000004, 0xff000010);
|
|
|
|
/* delete PMB for peripheral */
|
|
writel(0, PMB_ADDR_BASE(0));
|
|
writel(0, PMB_DATA_BASE(0));
|
|
writel(0, PMB_ADDR_BASE(1));
|
|
writel(0, PMB_DATA_BASE(1));
|
|
writel(0, PMB_ADDR_BASE(2));
|
|
writel(0, PMB_DATA_BASE(2));
|
|
|
|
/* add PMB for SDRAM(0x40000000 - 0x47ffffff) */
|
|
writel(mk_pmb_addr_val(0x80), PMB_ADDR_BASE(8));
|
|
writel(mk_pmb_data_val(0x40, 0, 1, 1, 0, 1, 1), PMB_DATA_BASE(8));
|
|
writel(mk_pmb_addr_val(0xa0), PMB_ADDR_BASE(12));
|
|
writel(mk_pmb_data_val(0x40, 1, 1, 1, 0, 0, 1), PMB_DATA_BASE(12));
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
pmb, 1, 1, do_pmb,
|
|
"pmb - PMB setting\n",
|
|
"\n"
|
|
" - PMB setting for all SDRAM mapping"
|
|
);
|
|
#endif
|