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PD#152186: firmware: fixed the issure of firmware pre loading for encoder.

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Change-Id: Ie38ab97fb5887060886e0f8f5595f475a8be4930
Signed-off-by: Nanxin Qin <nanxin.qin@amlogic.com>
This commit is contained in:
Nanxin Qin
2017-10-10 18:40:06 +08:00
committed by Dongjin Kim
parent e09b3c8126
commit 6f4767d014
1 changed files with 29 additions and 9 deletions
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38
drivers/amlogic/media_modules/common/firmware/firmware_drv.c
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@@ -45,6 +45,9 @@
#define FRIMWARE_SIZE (64*1024) /*64k*/
#define BUFF_SIZE (512*1024)
/*the first 256 bytes are signature data*/
#define SEC_OFFSET (256)
#define PACK ('P' << 24 | 'A' << 16 | 'C' << 8 | 'K')
#define CODE ('C' << 24 | 'O' << 16 | 'D' << 8 | 'E')
@@ -132,11 +135,20 @@ int get_data_from_name(const char *name, char *buf)
}
EXPORT_SYMBOL(get_data_from_name);
static int firmware_probe(char *buf)
{
int magic = 0;
memcpy(&magic, buf, sizeof(int));
return magic;
}
static int request_firmware_from_sys(const char *file_name,
char *buf, int size)
{
int ret = -1;
const struct firmware *firmware;
int magic, offset = 0;
pr_info("Try load %s ...\n", file_name);
@@ -152,7 +164,23 @@ static int request_firmware_from_sys(const char *file_name,
goto release;
}
memcpy(buf, (char *)firmware->data+256, firmware->size-256);
magic = firmware_probe((char *)firmware->data);
if (magic != PACK && magic != CODE) {
if (firmware->size < SEC_OFFSET) {
pr_info("This is an invalid firmware file.\n");
goto release;
}
magic = firmware_probe((char *)firmware->data + SEC_OFFSET);
if (magic != PACK) {
pr_info("The firmware file is not packet.\n");
goto release;
}
offset = SEC_OFFSET;
}
memcpy(buf, (char *)firmware->data + offset, firmware->size - offset);
pr_info("load firmware size : %zd, Name : %s.\n",
firmware->size, file_name);
@@ -335,14 +363,6 @@ static int set_firmware_info(void)
return ret;
}
static int firmware_probe(char *buf)
{
int magic = 0;
memcpy(&magic, buf, sizeof(int));
return magic;
}
static int checksum(struct firmware_s *firmware)
{
unsigned int crc;