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firmware: rockchip_sip: add valid value check for map->bank_bit_first

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Change-Id: I4909cd313854a10c415686f3c9df85411677370d
Signed-off-by: YouMin Chen <cym@rock-chips.com>
This commit is contained in:
YouMin Chen
2025-04-22 16:41:07 +08:00
parent c3bd2c8d05
commit b8c0e6975d
1 changed files with 8 additions and 7 deletions
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15
drivers/firmware/rockchip_sip.c
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@@ -211,28 +211,29 @@ struct dram_addrmap_info *sip_smc_get_dram_map(void)
{
struct arm_smccc_res res;
static struct dram_addrmap_info *map;
struct dram_addrmap_info *m;
if (map)
return map;
return map->bank_bit_first ? map : NULL;
/* Request share memory size 4KB */
res = sip_smc_request_share_mem(1, SHARE_PAGE_TYPE_DDR_ADDRMAP);
if (res.a0 != 0) {
pr_err("no ATF memory for init\n");
pr_err("%s: request share memory error!\n", __func__);
return NULL;
}
map = (struct dram_addrmap_info *)res.a1;
m = (struct dram_addrmap_info *)res.a1;
memset(m, 0x0, sizeof(*m));
res = sip_smc_dram(SHARE_PAGE_TYPE_DDR_ADDRMAP, 0,
ROCKCHIP_SIP_CONFIG_DRAM_ADDRMAP_GET);
if (res.a0) {
pr_err("rockchip_sip_config_dram_init error:%lx\n", res.a0);
map = NULL;
pr_err("rockchip_sip_config_dram_addrmap_get error:%lx\n", res.a0);
return NULL;
}
map = m;
return map;
return map->bank_bit_first ? map : NULL;
}
EXPORT_SYMBOL_GPL(sip_smc_get_dram_map);