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board: samsung: exynos-mobile: resolve env vars without board_info data

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Move environment variable setup procedure to exynos_env_setup(). This
function is independent of data from exynos_board_info as it is due for
removal in the succeding commits.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Kaustabh Chakraborty
2026-02-03 18:38:40 +05:30
committed by Minkyu Kang
parent 3b9f3620b8
commit 23ad0660c1
1 changed files with 72 additions and 17 deletions
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89
board/samsung/exynos-mobile/exynos-mobile.c
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@@ -18,6 +18,7 @@
#include <lmb.h>
#include <part.h>
#include <stdbool.h>
#include <string.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -213,6 +214,76 @@ static void exynos_parse_dram_banks(const void *fdt_base)
}
}
static void exynos_env_setup(void)
{
const char *bootargs = exynos_prev_bl_get_bootargs();
const char *dev_compatible, *soc_compatible;
char *ptr;
char buf[128];
int nr_compatibles;
int offset;
int ret;
if (bootargs) {
/* Read the cmdline property which stores the serial number. */
ret = cmdline_get_arg(bootargs, "androidboot.serialno", &offset);
if (ret > 0) {
strlcpy(buf, bootargs + offset, ret);
env_set("serial#", buf);
}
}
nr_compatibles = ofnode_read_string_count(ofnode_root(), "compatible");
if (nr_compatibles < 2) {
log_warning("%s: expected 2 or more compatible strings\n",
__func__);
return;
}
ret = ofnode_read_string_index(ofnode_root(), "compatible",
nr_compatibles - 1, &soc_compatible);
if (ret) {
log_warning("%s: failed to read SoC compatible\n",
__func__);
return;
}
ret = ofnode_read_string_index(ofnode_root(), "compatible", 0,
&dev_compatible);
if (ret) {
log_warning("%s: failed to read device compatible\n",
__func__);
return;
}
/* <manufacturer>,<soc> => platform = <soc> */
ptr = strchr(soc_compatible, ',');
if (ptr)
soc_compatible = ptr + 1;
env_set("platform", soc_compatible);
/* <manufacturer>,<codename> => board = <manufacturer>-<codename> */
strlcpy(buf, dev_compatible, sizeof(buf) - 1);
ptr = strchr(buf, ',');
if (ptr)
*ptr = '-';
env_set("board", buf);
/*
* NOTE: Board name usually goes as <manufacturer>-<codename>, but
* upstream device trees for Exynos SoCs are <soc>-<codename>.
* Extraction of <codename> from the board name is required.
*/
ptr = strchr(dev_compatible, ',');
if (ptr)
dev_compatible = ptr + 1;
/* EFI booting requires the path to correct DTB, specify it here. */
snprintf(buf, sizeof(buf), "exynos/%s-%s.dtb", soc_compatible,
dev_compatible);
env_set("fdtfile", buf);
}
static int exynos_fastboot_setup(void)
{
struct blk_desc *blk_dev;
@@ -371,23 +442,7 @@ int board_init(void)
int misc_init_r(void)
{
const struct exynos_board_info *board_info;
char buf[128];
if (!gd->board_type)
return -ENODATA;
board_info = (const struct exynos_board_info *)gd->board_type;
env_set("platform", board_info->chip);
env_set("board", board_info->name);
if (strlen(board_info->serial))
env_set("serial#", board_info->serial);
/* EFI booting requires the path to correct dtb, specify it here. */
snprintf(buf, sizeof(buf), "exynos/%s-%s.dtb", board_info->chip,
board_info->name);
env_set("fdtfile", buf);
exynos_env_setup();
return exynos_fastboot_setup();
}