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#include <common.h>
#include <asm/arch/bl31_apis.h>
#include <asm/reboot.h>
#include <asm/arch/secure_apb.h>
#include <ramdump.h>
#include <emmc_partitions.h>
#include <asm/cpu_id.h>
#define DEBUG_RAMDUMP 0
unsigned long ramdump_base = 0;
unsigned long ramdump_size = 0;
unsigned int get_reboot_mode(void)
{
uint32_t reboot_mode_val = ((readl(AO_SEC_SD_CFG15) >> 12) & 0xf);
return reboot_mode_val;
}
void ramdump_init(void)
{
unsigned int data;
ramdump_base = readl(P_AO_SEC_GP_CFG12);
ramdump_size = readl(P_AO_SEC_GP_CFG13);
data = readl(PREG_STICKY_REG8);
writel(data & ~RAMDUMP_STICKY_DATA_MASK, PREG_STICKY_REG8);
printf("%s, add:%lx, size:%lx\n", __func__, ramdump_base, ramdump_size);
}
/*
* NOTE: this is a default impemention for writing compressed ramdump data
* to /data/ partition for Android platform. You can read out dumpfile in
* path /data/crashdump-1.bin when enter Android for crash analyze.
* by default, /data/ partion for android is EXT4 fs.
*
* TODO:
* If you are using different fs or OS on your platform, implement compress
* data save command for your fs and OS in your board.c with same function
* name "ramdump_save_compress_data".
*/
__weak int ramdump_save_compress_data(void)
{
int data_pid;
char cmd[128] = {0};
data_pid = get_partition_num_by_name("data");
if (data_pid < 0) {
printf("can't find data partition\n");
return -1;
}
sprintf(cmd, "ext4write mmc 1:%x %lx /crashdump-1.bin %lx\n",
data_pid, ramdump_base, ramdump_size);
printf("CMD:%s\n", cmd);
run_command(cmd, 1);
return 0;
}
static void ramdump_env_setup(unsigned long addr, unsigned long size)
{
unsigned int data[10] = {
0x8E9C929F, 0x9E9C9791,
0xD28C9191, 0x97949B8D,
0x888B92, 0xCEBB97,
0x938E9B90, 0x978D8D97,
0xC8009B8A, 0xB99CDB
};
char *line, *p1, *p2, *o;
unsigned char *p;
int i;
p = (unsigned char *)data;
for (i = 0; i < 40; i++)
p[i] = ~(p[i] - 1);
/*
* TODO: Make sure address for fdt_high and initrd_high
* are suitable for all boards
*
* usually kernel load address is 0x010800000
* Make sure:
* (kernel image size + ramdisk size) <
* (initrd_high - 0x010800000)
* dts file size < (fdt_high - initrd_high)
*/
setenv("initrd_high", "0x04400000");
setenv("fdt_high", "0x04E00000");
line = getenv("bootargs");
if (!line)
return;
i = strlen(line);
o = malloc(i + 128);
if (!o)
return;
memset(o, 0, i + 128);
memcpy(o, line, i);
line = o + i + 128;
p1 = strstr(o, (const char *)p);
if (p1) {
p2 = strchr(p1, ' ');
if (!p2)
p2 = p1;
memmove(p1, p2, line - p2);
}
i = strlen(o);
p1 = o + i;
p1[0] = ' ';
sprintf(p1 + 1, "%s=%s ramdump=%lx,%lx",
(char *)data, (char *)(data + 6), addr, size);
setenv("bootargs", o);
#if DEBUG_RAMDUMP
run_command("printenv bootargs", 1);
#endif
free(o);
}
void check_ramdump(void)
{
unsigned long size = 0;
unsigned long addr = 0;
char *env;
int reboot_mode;
env = getenv("ramdump_enable");
if (env) {
printf("%s,%s\n", __func__, env);
if (!strcmp(env, "1")) {
reboot_mode = get_reboot_mode();
if ((reboot_mode == AMLOGIC_WATCHDOG_REBOOT ||
reboot_mode == AMLOGIC_KERNEL_PANIC)) {
addr = ramdump_base;
size = ramdump_size;
printf("%s, addr:%lx, size:%lx\n",
__func__, addr, size);
if (addr && size)
ramdump_env_setup(addr, size);
}
}
}
}
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