Firmware secure boot is to ensure firmware running on chip is the one
which is signed and released officially. Without this, it will be failed
to download firmware result from wrong security key data.
The main difference between secure and non-secure boot is content of
secure section, which is one type of many firmware sections, and is to
provide key data.
The basic steps for key data are:
1. read cryptography method and key_index from efuse (patch 2/4)
2. parse firmware file to select secure section by the information of
step 1 (patch 3/4)
3. download firmware with selected secure section and key data (patch 4/4)
v2:
- use "%tx" to print out differences (subtraction) of two pointers
in patch 3/4 (reported by kernel test robot)
Ping-Ke Shih (4):
wifi: rtw89: fw: consider checksum length of security data
wifi: rtw89: fw: read firmware secure information from efuse
wifi: rtw89: fw: parse secure section from firmware file
wifi: rtw89: fw: download firmware with key data for secure boot
drivers/net/wireless/realtek/rtw89/core.h | 15 +
drivers/net/wireless/realtek/rtw89/efuse.h | 1 +
drivers/net/wireless/realtek/rtw89/efuse_be.c | 142 +++++++++
drivers/net/wireless/realtek/rtw89/fw.c | 296 ++++++++++++++++--
drivers/net/wireless/realtek/rtw89/fw.h | 47 ++-
drivers/net/wireless/realtek/rtw89/pci.c | 2 +
drivers/net/wireless/realtek/rtw89/rtw8922a.c | 3 +
7 files changed, 484 insertions(+), 22 deletions(-)
--
2.25.1
To support firmware secure boot, read secure information from efuse to
know if current hardware module can support secure boot with certain
cryptography method.
This information should be prepared before downloading firmware, so read
efuse right after power on at probe stage. The secure information includes
secure cryptography method and secure key index that are used to choose
proper key material when downloading firmware.
Signed-off-by: Ping-Ke Shih <[email protected]>
---
drivers/net/wireless/realtek/rtw89/core.h | 15 ++
drivers/net/wireless/realtek/rtw89/efuse.h | 1 +
drivers/net/wireless/realtek/rtw89/efuse_be.c | 142 ++++++++++++++++++
drivers/net/wireless/realtek/rtw89/pci.c | 2 +
drivers/net/wireless/realtek/rtw89/rtw8922a.c | 3 +
5 files changed, 163 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index 30cc77ac78c5..8bbea97c3b1c 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -4030,6 +4030,19 @@ struct rtw89_fw_elm_info {
struct rtw89_phy_rfk_log_fmt *rfk_log_fmt;
};
+enum rtw89_fw_mss_dev_type {
+ RTW89_FW_MSS_DEV_TYPE_FWSEC_DEF = 0xF,
+ RTW89_FW_MSS_DEV_TYPE_FWSEC_INV = 0xFF,
+};
+
+struct rtw89_fw_secure {
+ bool secure_boot;
+ u32 sb_sel_mgn;
+ u8 mss_dev_type;
+ u8 mss_cust_idx;
+ u8 mss_key_num;
+};
+
struct rtw89_fw_info {
struct rtw89_fw_req_info req;
int fw_format;
@@ -4044,6 +4057,7 @@ struct rtw89_fw_info {
struct rtw89_fw_log log;
u32 feature_map;
struct rtw89_fw_elm_info elm_info;
+ struct rtw89_fw_secure sec;
};
#define RTW89_CHK_FW_FEATURE(_feat, _fw) \
@@ -4196,6 +4210,7 @@ enum rtw89_flags {
RTW89_FLAG_CMAC1_FUNC,
RTW89_FLAG_FW_RDY,
RTW89_FLAG_RUNNING,
+ RTW89_FLAG_PROBE_DONE,
RTW89_FLAG_BFEE_MON,
RTW89_FLAG_BFEE_EN,
RTW89_FLAG_BFEE_TIMER_KEEP,
diff --git a/drivers/net/wireless/realtek/rtw89/efuse.h b/drivers/net/wireless/realtek/rtw89/efuse.h
index 5c6787179bad..72416f56a071 100644
--- a/drivers/net/wireless/realtek/rtw89/efuse.h
+++ b/drivers/net/wireless/realtek/rtw89/efuse.h
@@ -23,5 +23,6 @@ int rtw89_parse_efuse_map_be(struct rtw89_dev *rtwdev);
int rtw89_parse_phycap_map_be(struct rtw89_dev *rtwdev);
int rtw89_cnv_efuse_state_be(struct rtw89_dev *rtwdev, bool idle);
int rtw89_read_efuse_ver(struct rtw89_dev *rtwdev, u8 *efv);
+int rtw89_efuse_read_fw_secure_be(struct rtw89_dev *rtwdev);
#endif
diff --git a/drivers/net/wireless/realtek/rtw89/efuse_be.c b/drivers/net/wireless/realtek/rtw89/efuse_be.c
index 8e8b7cd315f7..0be26d5fdf7c 100644
--- a/drivers/net/wireless/realtek/rtw89/efuse_be.c
+++ b/drivers/net/wireless/realtek/rtw89/efuse_be.c
@@ -7,6 +7,31 @@
#include "mac.h"
#include "reg.h"
+#define EFUSE_EXTERNALPN_ADDR_BE 0x1580
+#define EFUSE_B1_MSSDEVTYPE_MASK GENMASK(3, 0)
+#define EFUSE_B1_MSSCUSTIDX0_MASK GENMASK(7, 4)
+#define EFUSE_SERIALNUM_ADDR_BE 0x1581
+#define EFUSE_B2_MSSKEYNUM_MASK GENMASK(3, 0)
+#define EFUSE_B2_MSSCUSTIDX1_MASK BIT(6)
+#define EFUSE_SB_CRYP_SEL_ADDR 0x1582
+#define EFUSE_SB_CRYP_SEL_SIZE 2
+#define EFUSE_SB_CRYP_SEL_DEFAULT 0xFFFF
+#define SB_SEL_MGN_MAX_SIZE 2
+#define EFUSE_SEC_BE_START 0x1580
+#define EFUSE_SEC_BE_SIZE 4
+
+enum rtw89_efuse_mss_dev_type {
+ MSS_DEV_TYPE_FWSEC_DEF = 0xF,
+ MSS_DEV_TYPE_FWSEC_WINLIN_INBOX = 0xC,
+ MSS_DEV_TYPE_FWSEC_NONLIN_INBOX_NON_COB = 0xA,
+ MSS_DEV_TYPE_FWSEC_NONLIN_INBOX_COB = 0x9,
+ MSS_DEV_TYPE_FWSEC_NONWIN_INBOX = 0x6,
+};
+
+static const u32 sb_sel_mgn[SB_SEL_MGN_MAX_SIZE] = {
+ 0x8000100, 0xC000180
+};
+
static void rtw89_enable_efuse_pwr_cut_ddv_be(struct rtw89_dev *rtwdev)
{
const struct rtw89_chip_info *chip = rtwdev->chip;
@@ -418,3 +443,120 @@ int rtw89_parse_phycap_map_be(struct rtw89_dev *rtwdev)
return ret;
}
+
+static u16 get_sb_cryp_sel_idx(u16 sb_cryp_sel)
+{
+ u8 low_bit, high_bit, cnt_zero = 0;
+ u8 idx, sel_form_v, sel_idx_v;
+ u16 sb_cryp_sel_v = 0x0;
+
+ sel_form_v = u16_get_bits(sb_cryp_sel, MASKBYTE0);
+ sel_idx_v = u16_get_bits(sb_cryp_sel, MASKBYTE1);
+
+ for (idx = 0; idx < 4; idx++) {
+ low_bit = !!(sel_form_v & BIT(idx));
+ high_bit = !!(sel_form_v & BIT(7 - idx));
+ if (low_bit != high_bit)
+ return U16_MAX;
+ if (low_bit)
+ continue;
+
+ cnt_zero++;
+ if (cnt_zero == 1)
+ sb_cryp_sel_v = idx * 16;
+ else if (cnt_zero > 1)
+ return U16_MAX;
+ }
+
+ low_bit = u8_get_bits(sel_idx_v, 0x0F);
+ high_bit = u8_get_bits(sel_idx_v, 0xF0);
+
+ if ((low_bit ^ high_bit) != 0xF)
+ return U16_MAX;
+
+ return sb_cryp_sel_v + low_bit;
+}
+
+static u8 get_mss_dev_type_idx(struct rtw89_dev *rtwdev, u8 mss_dev_type)
+{
+ switch (mss_dev_type) {
+ case MSS_DEV_TYPE_FWSEC_WINLIN_INBOX:
+ mss_dev_type = 0x0;
+ break;
+ case MSS_DEV_TYPE_FWSEC_NONLIN_INBOX_NON_COB:
+ mss_dev_type = 0x1;
+ break;
+ case MSS_DEV_TYPE_FWSEC_NONLIN_INBOX_COB:
+ mss_dev_type = 0x2;
+ break;
+ case MSS_DEV_TYPE_FWSEC_NONWIN_INBOX:
+ mss_dev_type = 0x3;
+ break;
+ case MSS_DEV_TYPE_FWSEC_DEF:
+ mss_dev_type = RTW89_FW_MSS_DEV_TYPE_FWSEC_DEF;
+ break;
+ default:
+ rtw89_warn(rtwdev, "unknown mss_dev_type %d", mss_dev_type);
+ mss_dev_type = RTW89_FW_MSS_DEV_TYPE_FWSEC_INV;
+ break;
+ }
+
+ return mss_dev_type;
+}
+
+int rtw89_efuse_read_fw_secure_be(struct rtw89_dev *rtwdev)
+{
+ struct rtw89_fw_secure *sec = &rtwdev->fw.sec;
+ u32 sec_addr = EFUSE_SEC_BE_START;
+ u32 sec_size = EFUSE_SEC_BE_SIZE;
+ u16 sb_cryp_sel, sb_cryp_sel_idx;
+ u8 sec_map[EFUSE_SEC_BE_SIZE];
+ u8 mss_dev_type;
+ u8 b1, b2;
+ int ret;
+
+ ret = rtw89_dump_physical_efuse_map_be(rtwdev, sec_map,
+ sec_addr, sec_size, false);
+ if (ret) {
+ rtw89_warn(rtwdev, "failed to dump secsel map\n");
+ return ret;
+ }
+
+ sb_cryp_sel = sec_map[EFUSE_SB_CRYP_SEL_ADDR - sec_addr] |
+ sec_map[EFUSE_SB_CRYP_SEL_ADDR - sec_addr + 1] << 8;
+ if (sb_cryp_sel == EFUSE_SB_CRYP_SEL_DEFAULT)
+ goto out;
+
+ sb_cryp_sel_idx = get_sb_cryp_sel_idx(sb_cryp_sel);
+ if (sb_cryp_sel_idx >= SB_SEL_MGN_MAX_SIZE) {
+ rtw89_warn(rtwdev, "invalid SB cryp sel idx %d\n", sb_cryp_sel_idx);
+ goto out;
+ }
+
+ sec->sb_sel_mgn = sb_sel_mgn[sb_cryp_sel_idx];
+
+ b1 = sec_map[EFUSE_EXTERNALPN_ADDR_BE - sec_addr];
+ b2 = sec_map[EFUSE_SERIALNUM_ADDR_BE - sec_addr];
+
+ mss_dev_type = u8_get_bits(b1, EFUSE_B1_MSSDEVTYPE_MASK);
+ sec->mss_cust_idx = 0x1F - (u8_get_bits(b1, EFUSE_B1_MSSCUSTIDX0_MASK) |
+ u8_get_bits(b2, EFUSE_B2_MSSCUSTIDX1_MASK) << 4);
+ sec->mss_key_num = 0xF - u8_get_bits(b2, EFUSE_B2_MSSKEYNUM_MASK);
+
+ sec->mss_dev_type = get_mss_dev_type_idx(rtwdev, mss_dev_type);
+ if (sec->mss_dev_type == RTW89_FW_MSS_DEV_TYPE_FWSEC_INV) {
+ rtw89_warn(rtwdev, "invalid mss_dev_type %d\n", mss_dev_type);
+ goto out;
+ }
+
+ sec->secure_boot = true;
+
+out:
+ rtw89_debug(rtwdev, RTW89_DBG_FW,
+ "MSS secure_boot=%d dev_type=%d cust_idx=%d key_num=%d\n",
+ sec->secure_boot, sec->mss_dev_type, sec->mss_cust_idx,
+ sec->mss_key_num);
+
+ return 0;
+}
+EXPORT_SYMBOL(rtw89_efuse_read_fw_secure_be);
diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index b51ec3cbc715..67d7294e488a 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -4180,6 +4180,8 @@ int rtw89_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_free_irq;
}
+ set_bit(RTW89_FLAG_PROBE_DONE, rtwdev->flags);
+
return 0;
err_free_irq:
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922a.c b/drivers/net/wireless/realtek/rtw89/rtw8922a.c
index aefad3f2e612..c9e50fc38083 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8922a.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8922a.c
@@ -376,6 +376,9 @@ static int rtw8922a_pwr_on_func(struct rtw89_dev *rtwdev)
rtw89_write32_set(rtwdev, R_BE_FEN_RST_ENABLE, B_BE_FEN_BB_IP_RSTN |
B_BE_FEN_BBPLAT_RSTB);
+ if (!test_bit(RTW89_FLAG_PROBE_DONE, rtwdev->flags))
+ rtw89_efuse_read_fw_secure_be(rtwdev);
+
return 0;
}
--
2.25.1
Since firmware header contains multiple secure sections, we need to trim
ignored sections, and then download firmware header with single one secure
section.
For secure boot, when downloading secure section, copy security key data
from MSS poll by key_idx read from efuse. If non-secure boot, no need this
extra copy.
+---------------------------+ -\
| firmware header | |
| | |
| +-----------------------+ | | only preserve single one secure
| | section type/size * N | | | section
| | ... | | |
| +-----------------------+ | |
+---------------------------+ -/
: :
+---------------------------+ -\
| secure section type (ID:9)| |
| | |
+----|-> [ security key data ] | |
| +---------------------------+ -/
| |MSS Pool for above section |
| | [ security key data 0 ] |
+----|- [ security key data 1 ] |
by key_idx | [ security key data 2 ] |
| ... |
+---------------------------+
Signed-off-by: Ping-Ke Shih <[email protected]>
---
drivers/net/wireless/realtek/rtw89/fw.c | 95 +++++++++++++++++++++++--
drivers/net/wireless/realtek/rtw89/fw.h | 7 +-
2 files changed, 91 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index 1f31d539da1e..9598fe79c771 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -1098,9 +1098,56 @@ static void rtw89_h2c_pkt_set_hdr_fwdl(struct rtw89_dev *rtwdev,
len + H2C_HEADER_LEN));
}
-static int __rtw89_fw_download_hdr(struct rtw89_dev *rtwdev, const u8 *fw, u32 len)
+static u32 __rtw89_fw_download_tweak_hdr_v0(struct rtw89_dev *rtwdev,
+ struct rtw89_fw_bin_info *info,
+ struct rtw89_fw_hdr *fw_hdr)
{
+ le32p_replace_bits(&fw_hdr->w7, FWDL_SECTION_PER_PKT_LEN,
+ FW_HDR_W7_PART_SIZE);
+
+ return 0;
+}
+
+static u32 __rtw89_fw_download_tweak_hdr_v1(struct rtw89_dev *rtwdev,
+ struct rtw89_fw_bin_info *info,
+ struct rtw89_fw_hdr_v1 *fw_hdr)
+{
+ struct rtw89_fw_hdr_section_info *section_info;
+ struct rtw89_fw_hdr_section_v1 *section;
+ u8 dst_sec_idx = 0;
+ u8 sec_idx;
+
+ le32p_replace_bits(&fw_hdr->w7, FWDL_SECTION_PER_PKT_LEN,
+ FW_HDR_V1_W7_PART_SIZE);
+
+ for (sec_idx = 0; sec_idx < info->section_num; sec_idx++) {
+ section_info = &info->section_info[sec_idx];
+ section = &fw_hdr->sections[sec_idx];
+
+ if (section_info->ignore)
+ continue;
+
+ if (dst_sec_idx != sec_idx)
+ fw_hdr->sections[dst_sec_idx] = *section;
+
+ dst_sec_idx++;
+ }
+
+ le32p_replace_bits(&fw_hdr->w6, dst_sec_idx, FW_HDR_V1_W6_SEC_NUM);
+
+ return (info->section_num - dst_sec_idx) * sizeof(*section);
+}
+
+static int __rtw89_fw_download_hdr(struct rtw89_dev *rtwdev,
+ const struct rtw89_fw_suit *fw_suit,
+ struct rtw89_fw_bin_info *info)
+{
+ u32 len = info->hdr_len - info->dynamic_hdr_len;
+ struct rtw89_fw_hdr_v1 *fw_hdr_v1;
+ const u8 *fw = fw_suit->data;
+ struct rtw89_fw_hdr *fw_hdr;
struct sk_buff *skb;
+ u32 truncated;
u32 ret = 0;
skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, len);
@@ -1110,7 +1157,26 @@ static int __rtw89_fw_download_hdr(struct rtw89_dev *rtwdev, const u8 *fw, u32 l
}
skb_put_data(skb, fw, len);
- SET_FW_HDR_PART_SIZE(skb->data, FWDL_SECTION_PER_PKT_LEN);
+
+ switch (fw_suit->hdr_ver) {
+ case 0:
+ fw_hdr = (struct rtw89_fw_hdr *)skb->data;
+ truncated = __rtw89_fw_download_tweak_hdr_v0(rtwdev, info, fw_hdr);
+ break;
+ case 1:
+ fw_hdr_v1 = (struct rtw89_fw_hdr_v1 *)skb->data;
+ truncated = __rtw89_fw_download_tweak_hdr_v1(rtwdev, info, fw_hdr_v1);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ goto fail;
+ }
+
+ if (truncated) {
+ len -= truncated;
+ skb_trim(skb, len);
+ }
+
rtw89_h2c_pkt_set_hdr_fwdl(rtwdev, skb, FWCMD_TYPE_H2C,
H2C_CAT_MAC, H2C_CL_MAC_FWDL,
H2C_FUNC_MAC_FWHDR_DL, len);
@@ -1129,12 +1195,14 @@ static int __rtw89_fw_download_hdr(struct rtw89_dev *rtwdev, const u8 *fw, u32 l
return ret;
}
-static int rtw89_fw_download_hdr(struct rtw89_dev *rtwdev, const u8 *fw, u32 len)
+static int rtw89_fw_download_hdr(struct rtw89_dev *rtwdev,
+ const struct rtw89_fw_suit *fw_suit,
+ struct rtw89_fw_bin_info *info)
{
const struct rtw89_mac_gen_def *mac = rtwdev->chip->mac_def;
int ret;
- ret = __rtw89_fw_download_hdr(rtwdev, fw, len);
+ ret = __rtw89_fw_download_hdr(rtwdev, fw_suit, info);
if (ret) {
rtw89_err(rtwdev, "[ERR]FW header download\n");
return ret;
@@ -1158,9 +1226,21 @@ static int __rtw89_fw_download_main(struct rtw89_dev *rtwdev,
struct sk_buff *skb;
const u8 *section = info->addr;
u32 residue_len = info->len;
+ bool copy_key = false;
u32 pkt_len;
int ret;
+ if (info->ignore)
+ return 0;
+
+ if (info->key_addr && info->key_len) {
+ if (info->len > FWDL_SECTION_PER_PKT_LEN || info->len < info->key_len)
+ rtw89_warn(rtwdev, "ignore to copy key data because of len %d, %d, %d\n",
+ info->len, FWDL_SECTION_PER_PKT_LEN, info->key_len);
+ else
+ copy_key = true;
+ }
+
while (residue_len) {
if (residue_len >= FWDL_SECTION_PER_PKT_LEN)
pkt_len = FWDL_SECTION_PER_PKT_LEN;
@@ -1174,6 +1254,10 @@ static int __rtw89_fw_download_main(struct rtw89_dev *rtwdev,
}
skb_put_data(skb, section, pkt_len);
+ if (copy_key)
+ memcpy(skb->data + pkt_len - info->key_len,
+ info->key_addr, info->key_len);
+
ret = rtw89_h2c_tx(rtwdev, skb, true);
if (ret) {
rtw89_err(rtwdev, "failed to send h2c\n");
@@ -1299,8 +1383,7 @@ static int rtw89_fw_download_suit(struct rtw89_dev *rtwdev,
return ret;
}
- ret = rtw89_fw_download_hdr(rtwdev, fw_suit->data, info.hdr_len -
- info.dynamic_hdr_len);
+ ret = rtw89_fw_download_hdr(rtwdev, fw_suit, &info);
if (ret)
return ret;
diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index c05ddb0d5900..58e4802cb766 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -526,6 +526,7 @@ struct rtw89_fw_hdr {
#define FW_HDR_W4_MIN GENMASK(31, 24)
#define FW_HDR_W5_YEAR GENMASK(31, 0)
#define FW_HDR_W6_SEC_NUM GENMASK(15, 8)
+#define FW_HDR_W7_PART_SIZE GENMASK(15, 0)
#define FW_HDR_W7_DYN_HDR BIT(16)
#define FW_HDR_W7_CMD_VERSERION GENMASK(31, 24)
@@ -577,13 +578,9 @@ struct rtw89_fw_hdr_v1 {
#define FW_HDR_V1_W5_HDR_SIZE GENMASK(31, 16)
#define FW_HDR_V1_W6_SEC_NUM GENMASK(15, 8)
#define FW_HDR_V1_W6_DSP_CHKSUM BIT(24)
+#define FW_HDR_V1_W7_PART_SIZE GENMASK(15, 0)
#define FW_HDR_V1_W7_DYN_HDR BIT(16)
-static inline void SET_FW_HDR_PART_SIZE(void *fwhdr, u32 val)
-{
- le32p_replace_bits((__le32 *)fwhdr + 7, val, GENMASK(15, 0));
-}
-
enum rtw89_fw_mss_pool_rmp_tbl_type {
MSS_POOL_RMP_TBL_BITMASK = 0x0,
MSS_POOL_RMP_TBL_RECORD = 0x1,
--
2.25.1
A firmware file can contains more than one section with secure type, so
use secure information from efuse to choose the one with matched
cryptography method. Then choose key data from MSS poll (multiple security
section pool; see below picture) according to key_index from efuse.
Note that the size of MSS pool isn't included in section size defined
in firmware header, so we also need to parse header of MSS pool to get
its size as shift to parse next section.
If secure boot isn't supported by current hardware, the first secure
section will be adopted, and no need additional process to key data.
+---------------------------+
| firmware header |
| |
| +-----------------------+ |
| | section type/size * N-|-|-------+
| | ... | | |
| +-----------------------+ | |
+---------------------------+ |
: : |
+---------------------------+ -\ |
| secure section type (ID:9)| | |
| | | <--+
| | |
+---------------------------+ -/
|MSS Pool for above section |
| |
| |
+---------------------------+
Signed-off-by: Ping-Ke Shih <[email protected]>
---
v2: use "%tx" to print out differences (subtraction) of two pointers
---
drivers/net/wireless/realtek/rtw89/fw.c | 202 ++++++++++++++++++++++--
drivers/net/wireless/realtek/rtw89/fw.h | 39 +++++
2 files changed, 227 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index 00417364ab22..1f31d539da1e 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -13,6 +13,8 @@
#include "reg.h"
#include "util.h"
+static const u8 mss_signature[] = {0x4D, 0x53, 0x53, 0x4B, 0x50, 0x4F, 0x4F, 0x4C};
+
union rtw89_fw_element_arg {
size_t offset;
enum rtw89_rf_path rf_path;
@@ -163,6 +165,161 @@ static int rtw89_fw_hdr_parser_v0(struct rtw89_dev *rtwdev, const u8 *fw, u32 le
return 0;
}
+static int __get_mssc_key_idx(struct rtw89_dev *rtwdev,
+ const struct rtw89_fw_mss_pool_hdr *mss_hdr,
+ u32 rmp_tbl_size, u32 *key_idx)
+{
+ struct rtw89_fw_secure *sec = &rtwdev->fw.sec;
+ u32 sel_byte_idx;
+ u32 mss_sel_idx;
+ u8 sel_bit_idx;
+ int i;
+
+ if (sec->mss_dev_type == RTW89_FW_MSS_DEV_TYPE_FWSEC_DEF) {
+ if (!mss_hdr->defen)
+ return -ENOENT;
+
+ mss_sel_idx = sec->mss_cust_idx * le16_to_cpu(mss_hdr->msskey_num_max) +
+ sec->mss_key_num;
+ } else {
+ if (mss_hdr->defen)
+ mss_sel_idx = FWDL_MSS_POOL_DEFKEYSETS_SIZE << 3;
+ else
+ mss_sel_idx = 0;
+ mss_sel_idx += sec->mss_dev_type * le16_to_cpu(mss_hdr->msskey_num_max) *
+ le16_to_cpu(mss_hdr->msscust_max) +
+ sec->mss_cust_idx * le16_to_cpu(mss_hdr->msskey_num_max) +
+ sec->mss_key_num;
+ }
+
+ sel_byte_idx = mss_sel_idx >> 3;
+ sel_bit_idx = mss_sel_idx & 0x7;
+
+ if (sel_byte_idx >= rmp_tbl_size)
+ return -EFAULT;
+
+ if (!(mss_hdr->rmp_tbl[sel_byte_idx] & BIT(sel_bit_idx)))
+ return -ENOENT;
+
+ *key_idx = hweight8(mss_hdr->rmp_tbl[sel_byte_idx] & (BIT(sel_bit_idx) - 1));
+
+ for (i = 0; i < sel_byte_idx; i++)
+ *key_idx += hweight8(mss_hdr->rmp_tbl[i]);
+
+ return 0;
+}
+
+static int __parse_formatted_mssc(struct rtw89_dev *rtwdev,
+ struct rtw89_fw_bin_info *info,
+ struct rtw89_fw_hdr_section_info *section_info,
+ const struct rtw89_fw_hdr_section_v1 *section,
+ const void *content,
+ u32 *mssc_len)
+{
+ const struct rtw89_fw_mss_pool_hdr *mss_hdr = content + section_info->len;
+ const union rtw89_fw_section_mssc_content *section_content = content;
+ struct rtw89_fw_secure *sec = &rtwdev->fw.sec;
+ u32 rmp_tbl_size;
+ u32 key_sign_len;
+ u32 real_key_idx;
+ u32 sb_sel_ver;
+ int ret;
+
+ if (memcmp(mss_signature, mss_hdr->signature, sizeof(mss_signature)) != 0) {
+ rtw89_err(rtwdev, "[ERR] wrong MSS signature\n");
+ return -ENOENT;
+ }
+
+ if (mss_hdr->rmpfmt == MSS_POOL_RMP_TBL_BITMASK) {
+ rmp_tbl_size = (le16_to_cpu(mss_hdr->msskey_num_max) *
+ le16_to_cpu(mss_hdr->msscust_max) *
+ mss_hdr->mssdev_max) >> 3;
+ if (mss_hdr->defen)
+ rmp_tbl_size += FWDL_MSS_POOL_DEFKEYSETS_SIZE;
+ } else {
+ rtw89_err(rtwdev, "[ERR] MSS Key Pool Remap Table Format Unsupport:%X\n",
+ mss_hdr->rmpfmt);
+ return -EINVAL;
+ }
+
+ if (rmp_tbl_size + sizeof(*mss_hdr) != le32_to_cpu(mss_hdr->key_raw_offset)) {
+ rtw89_err(rtwdev, "[ERR] MSS Key Pool Format Error:0x%X + 0x%X != 0x%X\n",
+ rmp_tbl_size, (int)sizeof(*mss_hdr),
+ le32_to_cpu(mss_hdr->key_raw_offset));
+ return -EINVAL;
+ }
+
+ key_sign_len = le16_to_cpu(section_content->key_sign_len.v) >> 2;
+ if (!key_sign_len)
+ key_sign_len = 512;
+
+ if (info->dsp_checksum)
+ key_sign_len += FWDL_SECURITY_CHKSUM_LEN;
+
+ *mssc_len = sizeof(*mss_hdr) + rmp_tbl_size +
+ le16_to_cpu(mss_hdr->keypair_num) * key_sign_len;
+
+ if (!sec->secure_boot)
+ goto out;
+
+ sb_sel_ver = le32_to_cpu(section_content->sb_sel_ver.v);
+ if (sb_sel_ver && sb_sel_ver != sec->sb_sel_mgn)
+ goto ignore;
+
+ ret = __get_mssc_key_idx(rtwdev, mss_hdr, rmp_tbl_size, &real_key_idx);
+ if (ret)
+ goto ignore;
+
+ section_info->key_addr = content + section_info->len +
+ le32_to_cpu(mss_hdr->key_raw_offset) +
+ key_sign_len * real_key_idx;
+ section_info->key_len = key_sign_len;
+ section_info->key_idx = real_key_idx;
+
+out:
+ if (info->secure_section_exist) {
+ section_info->ignore = true;
+ return 0;
+ }
+
+ info->secure_section_exist = true;
+
+ return 0;
+
+ignore:
+ section_info->ignore = true;
+
+ return 0;
+}
+
+static int __parse_security_section(struct rtw89_dev *rtwdev,
+ struct rtw89_fw_bin_info *info,
+ struct rtw89_fw_hdr_section_info *section_info,
+ const struct rtw89_fw_hdr_section_v1 *section,
+ const void *content,
+ u32 *mssc_len)
+{
+ int ret;
+
+ section_info->mssc =
+ le32_get_bits(section->w2, FWSECTION_HDR_V1_W2_MSSC);
+
+ if (section_info->mssc == FORMATTED_MSSC) {
+ ret = __parse_formatted_mssc(rtwdev, info, section_info,
+ section, content, mssc_len);
+ if (ret)
+ return -EINVAL;
+ } else {
+ *mssc_len = section_info->mssc * FWDL_SECURITY_SIGLEN;
+ if (info->dsp_checksum)
+ *mssc_len += section_info->mssc * FWDL_SECURITY_CHKSUM_LEN;
+
+ info->secure_section_exist = true;
+ }
+
+ return 0;
+}
+
static int rtw89_fw_hdr_parser_v1(struct rtw89_dev *rtwdev, const u8 *fw, u32 len,
struct rtw89_fw_bin_info *info)
{
@@ -173,7 +330,8 @@ static int rtw89_fw_hdr_parser_v1(struct rtw89_dev *rtwdev, const u8 *fw, u32 le
const u8 *fw_end = fw + len;
const u8 *bin;
u32 base_hdr_len;
- u32 mssc_len = 0;
+ u32 mssc_len;
+ int ret;
u32 i;
info->section_num = le32_get_bits(fw_hdr->w6, FW_HDR_V1_W6_SEC_NUM);
@@ -200,18 +358,9 @@ static int rtw89_fw_hdr_parser_v1(struct rtw89_dev *rtwdev, const u8 *fw, u32 le
section_info = info->section_info;
for (i = 0; i < info->section_num; i++) {
section = &fw_hdr->sections[i];
+
section_info->type =
le32_get_bits(section->w1, FWSECTION_HDR_V1_W1_SECTIONTYPE);
- if (section_info->type == FWDL_SECURITY_SECTION_TYPE) {
- section_info->mssc =
- le32_get_bits(section->w2, FWSECTION_HDR_V1_W2_MSSC);
- mssc_len += section_info->mssc * FWDL_SECURITY_SIGLEN;
- if (info->dsp_checksum)
- mssc_len += section_info->mssc * FWDL_SECURITY_CHKSUM_LEN;
- } else {
- section_info->mssc = 0;
- }
-
section_info->len =
le32_get_bits(section->w1, FWSECTION_HDR_V1_W1_SEC_SIZE);
if (le32_get_bits(section->w1, FWSECTION_HDR_V1_W1_CHECKSUM))
@@ -220,15 +369,40 @@ static int rtw89_fw_hdr_parser_v1(struct rtw89_dev *rtwdev, const u8 *fw, u32 le
section_info->dladdr =
le32_get_bits(section->w0, FWSECTION_HDR_V1_W0_DL_ADDR);
section_info->addr = bin;
- bin += section_info->len;
+
+ if (section_info->type == FWDL_SECURITY_SECTION_TYPE) {
+ ret = __parse_security_section(rtwdev, info, section_info,
+ section, bin, &mssc_len);
+ if (ret)
+ return ret;
+ } else {
+ section_info->mssc = 0;
+ mssc_len = 0;
+ }
+
+ rtw89_debug(rtwdev, RTW89_DBG_FW,
+ "section[%d] type=%d len=0x%-6x mssc=%d mssc_len=%d addr=%tx\n",
+ i, section_info->type, section_info->len,
+ section_info->mssc, mssc_len, bin - fw);
+ rtw89_debug(rtwdev, RTW89_DBG_FW,
+ " ignore=%d key_addr=%p (0x%tx) key_len=%d key_idx=%d\n",
+ section_info->ignore, section_info->key_addr,
+ section_info->key_addr ?
+ section_info->key_addr - section_info->addr : 0,
+ section_info->key_len, section_info->key_idx);
+
+ bin += section_info->len + mssc_len;
section_info++;
}
- if (fw_end != bin + mssc_len) {
+ if (fw_end != bin) {
rtw89_err(rtwdev, "[ERR]fw bin size\n");
return -EINVAL;
}
+ if (!info->secure_section_exist)
+ rtw89_warn(rtwdev, "no firmware secure section\n");
+
return 0;
}
@@ -1106,7 +1280,7 @@ static int rtw89_fw_download_suit(struct rtw89_dev *rtwdev,
struct rtw89_fw_suit *fw_suit)
{
const struct rtw89_mac_gen_def *mac = rtwdev->chip->mac_def;
- struct rtw89_fw_bin_info info;
+ struct rtw89_fw_bin_info info = {};
int ret;
ret = rtw89_fw_hdr_parser(rtwdev, fw_suit, &info);
diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index 5b536c2e365d..c05ddb0d5900 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -230,6 +230,10 @@ struct rtw89_fw_hdr_section_info {
u32 dladdr;
u32 mssc;
u8 type;
+ bool ignore;
+ const u8 *key_addr;
+ u32 key_len;
+ u32 key_idx;
};
struct rtw89_fw_bin_info {
@@ -238,6 +242,7 @@ struct rtw89_fw_bin_info {
bool dynamic_hdr_en;
u32 dynamic_hdr_len;
bool dsp_checksum;
+ bool secure_section_exist;
struct rtw89_fw_hdr_section_info section_info[FWDL_SECTION_MAX_NUM];
};
@@ -538,6 +543,7 @@ struct rtw89_fw_hdr_section_v1 {
#define FWSECTION_HDR_V1_W1_CHECKSUM BIT(28)
#define FWSECTION_HDR_V1_W1_REDL BIT(29)
#define FWSECTION_HDR_V1_W2_MSSC GENMASK(7, 0)
+#define FORMATTED_MSSC 0xFF
#define FWSECTION_HDR_V1_W2_BBMCU_IDX GENMASK(27, 24)
struct rtw89_fw_hdr_v1 {
@@ -578,6 +584,39 @@ static inline void SET_FW_HDR_PART_SIZE(void *fwhdr, u32 val)
le32p_replace_bits((__le32 *)fwhdr + 7, val, GENMASK(15, 0));
}
+enum rtw89_fw_mss_pool_rmp_tbl_type {
+ MSS_POOL_RMP_TBL_BITMASK = 0x0,
+ MSS_POOL_RMP_TBL_RECORD = 0x1,
+};
+
+#define FWDL_MSS_POOL_DEFKEYSETS_SIZE 8
+
+struct rtw89_fw_mss_pool_hdr {
+ u8 signature[8]; /* equal to mss_signature[] */
+ __le32 rmp_tbl_offset;
+ __le32 key_raw_offset;
+ u8 defen;
+ u8 rsvd[3];
+ u8 rmpfmt; /* enum rtw89_fw_mss_pool_rmp_tbl_type */
+ u8 mssdev_max;
+ __le16 keypair_num;
+ __le16 msscust_max;
+ __le16 msskey_num_max;
+ __le32 rsvd3;
+ u8 rmp_tbl[];
+} __packed;
+
+union rtw89_fw_section_mssc_content {
+ struct {
+ u8 pad[58];
+ __le32 v;
+ } __packed sb_sel_ver;
+ struct {
+ u8 pad[60];
+ __le16 v;
+ } __packed key_sign_len;
+} __packed;
+
static inline void SET_CTRL_INFO_MACID(void *table, u32 val)
{
le32p_replace_bits((__le32 *)(table) + 0, val, GENMASK(6, 0));
--
2.25.1