[U-Boot] [PATCH v4 1/3] rockchip: rk3399: derive ethaddr from cpuid
Generate a MAC address based on the cpuid available in the efuse block: Use the first 6 byte of the cpuid's SHA256 hash and set the locally administered bits. Also ensure that the multicast bit is cleared.
The MAC address is only generated and set if there is no ethaddr present in the saved environment.
This is based off of Klaus Goger's work in 8adc9d
Signed-off-by: Rohan Garg rohan.garg@collabora.com
---
arch/arm/include/asm/arch-rockchip/misc.h | 13 +++ arch/arm/mach-rockchip/Makefile | 4 + arch/arm/mach-rockchip/board.c | 21 ++++ arch/arm/mach-rockchip/misc.c | 114 ++++++++++++++++++++++ 4 files changed, 152 insertions(+) create mode 100644 arch/arm/include/asm/arch-rockchip/misc.h create mode 100644 arch/arm/mach-rockchip/misc.c
diff --git a/arch/arm/include/asm/arch-rockchip/misc.h b/arch/arm/include/asm/arch-rockchip/misc.h new file mode 100644 index 0000000000..b6b03c934e --- /dev/null +++ b/arch/arm/include/asm/arch-rockchip/misc.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RK3399: Architecture common definitions + * + * Copyright (C) 2019 Collabora Inc - https://www.collabora.com/ + * Rohan Garg rohan.garg@collabora.com + */ + +int rockchip_cpuid_from_efuse(const u32 cpuid_offset, + const u32 cpuid_length, + u8 *cpuid); +int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length); +int rockchip_setup_macaddr(void); diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index aed379a0dc..207f900011 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -25,6 +25,10 @@ endif
obj-$(CONFIG_$(SPL_TPL_)RAM) += sdram_common.o
+ifdef CONFIG_MISC_INIT_R +obj-y += misc.o +endif + obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036/ obj-$(CONFIG_ROCKCHIP_RK3128) += rk3128/ ifndef CONFIG_TPL_BUILD diff --git a/arch/arm/mach-rockchip/board.c b/arch/arm/mach-rockchip/board.c index b2a88e789d..4a30a1865e 100644 --- a/arch/arm/mach-rockchip/board.c +++ b/arch/arm/mach-rockchip/board.c @@ -11,6 +11,7 @@ #include <asm/arch-rockchip/boot_mode.h> #include <asm/arch-rockchip/clock.h> #include <asm/arch-rockchip/periph.h> +#include <asm/arch-rockchip/misc.h> #include <power/regulator.h>
DECLARE_GLOBAL_DATA_PTR; @@ -102,3 +103,23 @@ int fastboot_set_reboot_flag(void) return 0; } #endif + +__weak int misc_init_r(void) +{ + const u32 cpuid_offset = 0x7; + const u32 cpuid_length = 0x10; + u8 cpuid[cpuid_length]; + int ret; + + ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid); + if (ret) + return ret; + + ret = rockchip_cpuid_set(cpuid, cpuid_length); + if (ret) + return ret; + + ret = rockchip_setup_macaddr(); + + return ret; +} diff --git a/arch/arm/mach-rockchip/misc.c b/arch/arm/mach-rockchip/misc.c new file mode 100644 index 0000000000..2144b41eae --- /dev/null +++ b/arch/arm/mach-rockchip/misc.c @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RK3399: Architecture common definitions + * + * Copyright (C) 2019 Collabora Inc - https://www.collabora.com/ + * Rohan Garg rohan.garg@collabora.com + * + * Based on puma-rk3399.c: + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH + */ + +#include <common.h> +#include <environment.h> +#include <dm.h> +#include <dm/uclass-internal.h> +#include <misc.h> +#include <u-boot/sha256.h> + +#include <asm/arch-rockchip/misc.h> + +int rockchip_setup_macaddr(void) +{ +#if CONFIG_IS_ENABLED(CMD_NET) + int ret; + const char *cpuid = env_get("cpuid#"); + u8 hash[SHA256_SUM_LEN]; + int size = sizeof(hash); + u8 mac_addr[6]; + + /* Only generate a MAC address, if none is set in the environment */ + if (env_get("ethaddr")) + return -1; + + if (!cpuid) { + debug("%s: could not retrieve 'cpuid#'\n", __func__); + return -1; + } + + ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); + if (ret) { + debug("%s: failed to calculate SHA256\n", __func__); + return -1; + } + + /* Copy 6 bytes of the hash to base the MAC address on */ + memcpy(mac_addr, hash, 6); + + /* Make this a valid MAC address and set it */ + mac_addr[0] &= 0xfe; /* clear multicast bit */ + mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ + eth_env_set_enetaddr("ethaddr", mac_addr); +#endif + return 0; +} + +int rockchip_cpuid_from_efuse(const u32 cpuid_offset, + const u32 cpuid_length, + u8 *cpuid) +{ +#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) + struct udevice *dev; + int ret; + + /* retrieve the device */ + ret = uclass_get_device_by_driver(UCLASS_MISC, + DM_GET_DRIVER(rockchip_efuse), &dev); + if (ret) { + debug("%s: could not find efuse device\n", __func__); + return -1; + } + + /* read the cpu_id range from the efuses */ + ret = misc_read(dev, cpuid_offset, cpuid, sizeof(cpuid)); + if (ret) { + debug("%s: reading cpuid from the efuses failed\n", + __func__); + return -1; + } +#endif + return 0; +} + +int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length) +{ + u8 low[cpuid_length / 2], high[cpuid_length / 2]; + char cpuid_str[cpuid_length * 2 + 1]; + u64 serialno; + char serialno_str[17]; + int i; + + memset(cpuid_str, 0, sizeof(cpuid_str)); + for (i = 0; i < 16; i++) + sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); + + debug("cpuid: %s\n", cpuid_str); + + /* + * Mix the cpuid bytes using the same rules as in + * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c + */ + for (i = 0; i < 8; i++) { + low[i] = cpuid[1 + (i << 1)]; + high[i] = cpuid[i << 1]; + } + + serialno = crc32_no_comp(0, low, 8); + serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; + snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno); + + env_set("cpuid#", cpuid_str); + env_set("serial#", serialno_str); + + return 0; +}
This enables us to set a static MAC address
Signed-off-by: Rohan Garg rohan.garg@collabora.com ---
configs/rock-pi-4-rk3399_defconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/configs/rock-pi-4-rk3399_defconfig b/configs/rock-pi-4-rk3399_defconfig index 14ae39a561..602be5a928 100644 --- a/configs/rock-pi-4-rk3399_defconfig +++ b/configs/rock-pi-4-rk3399_defconfig @@ -56,3 +56,4 @@ CONFIG_USB_ETHER_SMSC95XX=y CONFIG_USE_TINY_PRINTF=y CONFIG_SPL_TINY_MEMSET=y CONFIG_ERRNO_STR=y +CONFIG_MISC_INIT_R=y
On 2019/8/12 下午11:04, Rohan Garg wrote:
This enables us to set a static MAC address
Signed-off-by: Rohan Garg rohan.garg@collabora.com
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Thanks, - Kever
configs/rock-pi-4-rk3399_defconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/configs/rock-pi-4-rk3399_defconfig b/configs/rock-pi-4-rk3399_defconfig index 14ae39a561..602be5a928 100644 --- a/configs/rock-pi-4-rk3399_defconfig +++ b/configs/rock-pi-4-rk3399_defconfig @@ -56,3 +56,4 @@ CONFIG_USB_ETHER_SMSC95XX=y CONFIG_USE_TINY_PRINTF=y CONFIG_SPL_TINY_MEMSET=y CONFIG_ERRNO_STR=y +CONFIG_MISC_INIT_R=y
We should use the shared helpers to setup the necessary parts
Signed-off-by: Rohan Garg rohan.garg@collabora.com ---
.../puma_rk3399/puma-rk3399.c | 108 +++--------------- 1 file changed, 18 insertions(+), 90 deletions(-)
diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index a7e7f022ba..562a6ec9c8 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -18,97 +18,10 @@ #include <asm/arch-rockchip/hardware.h> #include <asm/arch-rockchip/grf_rk3399.h> #include <asm/arch-rockchip/periph.h> +#include <asm/arch-rockchip/misc.h> #include <power/regulator.h> #include <u-boot/sha256.h>
-static void setup_macaddr(void) -{ -#if CONFIG_IS_ENABLED(CMD_NET) - int ret; - const char *cpuid = env_get("cpuid#"); - u8 hash[SHA256_SUM_LEN]; - int size = sizeof(hash); - u8 mac_addr[6]; - - /* Only generate a MAC address, if none is set in the environment */ - if (env_get("ethaddr")) - return; - - if (!cpuid) { - debug("%s: could not retrieve 'cpuid#'\n", __func__); - return; - } - - ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); - if (ret) { - debug("%s: failed to calculate SHA256\n", __func__); - return; - } - - /* Copy 6 bytes of the hash to base the MAC address on */ - memcpy(mac_addr, hash, 6); - - /* Make this a valid MAC address and set it */ - mac_addr[0] &= 0xfe; /* clear multicast bit */ - mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ - eth_env_set_enetaddr("ethaddr", mac_addr); -#endif -} - -static void setup_serial(void) -{ -#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) - const u32 cpuid_offset = 0x7; - const u32 cpuid_length = 0x10; - - struct udevice *dev; - int ret, i; - u8 cpuid[cpuid_length]; - u8 low[cpuid_length/2], high[cpuid_length/2]; - char cpuid_str[cpuid_length * 2 + 1]; - u64 serialno; - char serialno_str[17]; - - /* retrieve the device */ - ret = uclass_get_device_by_driver(UCLASS_MISC, - DM_GET_DRIVER(rockchip_efuse), &dev); - if (ret) { - debug("%s: could not find efuse device\n", __func__); - return; - } - - /* read the cpu_id range from the efuses */ - ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid)); - if (ret) { - debug("%s: reading cpuid from the efuses failed\n", - __func__); - return; - } - - memset(cpuid_str, 0, sizeof(cpuid_str)); - for (i = 0; i < 16; i++) - sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); - - debug("cpuid: %s\n", cpuid_str); - - /* - * Mix the cpuid bytes using the same rules as in - * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c - */ - for (i = 0; i < 8; i++) { - low[i] = cpuid[1 + (i << 1)]; - high[i] = cpuid[i << 1]; - } - - serialno = crc32_no_comp(0, low, 8); - serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; - snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno); - - env_set("cpuid#", cpuid_str); - env_set("serial#", serialno_str); -#endif -} - static void setup_iodomain(void) { const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3; @@ -198,8 +111,23 @@ static int setup_boottargets(void)
int misc_init_r(void) { - setup_serial(); - setup_macaddr(); + const u32 cpuid_offset = 0x7; + const u32 cpuid_length = 0x10; + u8 cpuid[cpuid_length]; + int ret; + + ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid); + if (ret) + return ret; + + ret = rockchip_cpuid_set(cpuid, cpuid_length); + if (ret) + return ret; + + ret = rockchip_setup_macaddr(); + if (ret) + return ret; + setup_iodomain(); setup_boottargets();
On 2019/8/12 下午11:04, Rohan Garg wrote:
We should use the shared helpers to setup the necessary parts
Signed-off-by: Rohan Garg rohan.garg@collabora.com
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Thanks, - Kever
.../puma_rk3399/puma-rk3399.c | 108 +++--------------- 1 file changed, 18 insertions(+), 90 deletions(-)
diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index a7e7f022ba..562a6ec9c8 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -18,97 +18,10 @@ #include <asm/arch-rockchip/hardware.h> #include <asm/arch-rockchip/grf_rk3399.h> #include <asm/arch-rockchip/periph.h> +#include <asm/arch-rockchip/misc.h> #include <power/regulator.h> #include <u-boot/sha256.h>
-static void setup_macaddr(void) -{ -#if CONFIG_IS_ENABLED(CMD_NET)
- int ret;
- const char *cpuid = env_get("cpuid#");
- u8 hash[SHA256_SUM_LEN];
- int size = sizeof(hash);
- u8 mac_addr[6];
- /* Only generate a MAC address, if none is set in the environment */
- if (env_get("ethaddr"))
return;- if (!cpuid) {
debug("%s: could not retrieve 'cpuid#'\n", __func__);return;- }
- ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
- if (ret) {
debug("%s: failed to calculate SHA256\n", __func__);return;- }
- /* Copy 6 bytes of the hash to base the MAC address on */
- memcpy(mac_addr, hash, 6);
- /* Make this a valid MAC address and set it */
- mac_addr[0] &= 0xfe; /* clear multicast bit */
- mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
- eth_env_set_enetaddr("ethaddr", mac_addr);
-#endif -}
-static void setup_serial(void) -{ -#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
- const u32 cpuid_offset = 0x7;
- const u32 cpuid_length = 0x10;
- struct udevice *dev;
- int ret, i;
- u8 cpuid[cpuid_length];
- u8 low[cpuid_length/2], high[cpuid_length/2];
- char cpuid_str[cpuid_length * 2 + 1];
- u64 serialno;
- char serialno_str[17];
- /* retrieve the device */
- ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_GET_DRIVER(rockchip_efuse), &dev);- if (ret) {
debug("%s: could not find efuse device\n", __func__);return;- }
- /* read the cpu_id range from the efuses */
- ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid));
- if (ret) {
debug("%s: reading cpuid from the efuses failed\n",__func__);return;- }
- memset(cpuid_str, 0, sizeof(cpuid_str));
- for (i = 0; i < 16; i++)
sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);- debug("cpuid: %s\n", cpuid_str);
- /*
* Mix the cpuid bytes using the same rules as in* ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c*/- for (i = 0; i < 8; i++) {
low[i] = cpuid[1 + (i << 1)];high[i] = cpuid[i << 1];- }
- serialno = crc32_no_comp(0, low, 8);
- serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
- snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
- env_set("cpuid#", cpuid_str);
- env_set("serial#", serialno_str);
-#endif -}
- static void setup_iodomain(void) { const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
@@ -198,8 +111,23 @@ static int setup_boottargets(void)
int misc_init_r(void) {
- setup_serial();
- setup_macaddr();
const u32 cpuid_offset = 0x7;const u32 cpuid_length = 0x10;u8 cpuid[cpuid_length];int ret;ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);if (ret)return ret;ret = rockchip_cpuid_set(cpuid, cpuid_length);if (ret)return ret;ret = rockchip_setup_macaddr();if (ret)return ret;- setup_iodomain(); setup_boottargets();
Hi Rohan,
On 2019/8/12 下午11:04, Rohan Garg wrote:
Generate a MAC address based on the cpuid available in the efuse block: Use the first 6 byte of the cpuid's SHA256 hash and set the locally administered bits. Also ensure that the multicast bit is cleared.
The MAC address is only generated and set if there is no ethaddr present in the saved environment.
This is based off of Klaus Goger's work in 8adc9d
Signed-off-by: Rohan Garg rohan.garg@collabora.com
Reviewed-by: Kever Yang kever.yang@rock-chips.com
Thanks, - Kever
arch/arm/include/asm/arch-rockchip/misc.h | 13 +++ arch/arm/mach-rockchip/Makefile | 4 + arch/arm/mach-rockchip/board.c | 21 ++++ arch/arm/mach-rockchip/misc.c | 114 ++++++++++++++++++++++ 4 files changed, 152 insertions(+) create mode 100644 arch/arm/include/asm/arch-rockchip/misc.h create mode 100644 arch/arm/mach-rockchip/misc.c
diff --git a/arch/arm/include/asm/arch-rockchip/misc.h b/arch/arm/include/asm/arch-rockchip/misc.h new file mode 100644 index 0000000000..b6b03c934e --- /dev/null +++ b/arch/arm/include/asm/arch-rockchip/misc.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/*
- RK3399: Architecture common definitions
- Copyright (C) 2019 Collabora Inc - https://www.collabora.com/
Rohan Garg <rohan.garg@collabora.com>- */
+int rockchip_cpuid_from_efuse(const u32 cpuid_offset,
const u32 cpuid_length,u8 *cpuid);+int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length); +int rockchip_setup_macaddr(void); diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index aed379a0dc..207f900011 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -25,6 +25,10 @@ endif
obj-$(CONFIG_$(SPL_TPL_)RAM) += sdram_common.o
+ifdef CONFIG_MISC_INIT_R +obj-y += misc.o +endif
- obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036/ obj-$(CONFIG_ROCKCHIP_RK3128) += rk3128/ ifndef CONFIG_TPL_BUILD
diff --git a/arch/arm/mach-rockchip/board.c b/arch/arm/mach-rockchip/board.c index b2a88e789d..4a30a1865e 100644 --- a/arch/arm/mach-rockchip/board.c +++ b/arch/arm/mach-rockchip/board.c @@ -11,6 +11,7 @@ #include <asm/arch-rockchip/boot_mode.h> #include <asm/arch-rockchip/clock.h> #include <asm/arch-rockchip/periph.h> +#include <asm/arch-rockchip/misc.h> #include <power/regulator.h>
DECLARE_GLOBAL_DATA_PTR; @@ -102,3 +103,23 @@ int fastboot_set_reboot_flag(void) return 0; } #endif
+__weak int misc_init_r(void) +{
- const u32 cpuid_offset = 0x7;
- const u32 cpuid_length = 0x10;
- u8 cpuid[cpuid_length];
- int ret;
- ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);
- if (ret)
return ret;- ret = rockchip_cpuid_set(cpuid, cpuid_length);
- if (ret)
return ret;- ret = rockchip_setup_macaddr();
- return ret;
+} diff --git a/arch/arm/mach-rockchip/misc.c b/arch/arm/mach-rockchip/misc.c new file mode 100644 index 0000000000..2144b41eae --- /dev/null +++ b/arch/arm/mach-rockchip/misc.c @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/*
- RK3399: Architecture common definitions
- Copyright (C) 2019 Collabora Inc - https://www.collabora.com/
Rohan Garg <rohan.garg@collabora.com>
- Based on puma-rk3399.c:
(C) Copyright 2017 Theobroma Systems Design und Consulting GmbH- */
+#include <common.h> +#include <environment.h> +#include <dm.h> +#include <dm/uclass-internal.h> +#include <misc.h> +#include <u-boot/sha256.h>
+#include <asm/arch-rockchip/misc.h>
+int rockchip_setup_macaddr(void) +{ +#if CONFIG_IS_ENABLED(CMD_NET)
- int ret;
- const char *cpuid = env_get("cpuid#");
- u8 hash[SHA256_SUM_LEN];
- int size = sizeof(hash);
- u8 mac_addr[6];
- /* Only generate a MAC address, if none is set in the environment */
- if (env_get("ethaddr"))
return -1;- if (!cpuid) {
debug("%s: could not retrieve 'cpuid#'\n", __func__);return -1;- }
- ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
- if (ret) {
debug("%s: failed to calculate SHA256\n", __func__);return -1;- }
- /* Copy 6 bytes of the hash to base the MAC address on */
- memcpy(mac_addr, hash, 6);
- /* Make this a valid MAC address and set it */
- mac_addr[0] &= 0xfe; /* clear multicast bit */
- mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
- eth_env_set_enetaddr("ethaddr", mac_addr);
+#endif
- return 0;
+}
+int rockchip_cpuid_from_efuse(const u32 cpuid_offset,
const u32 cpuid_length,u8 *cpuid)+{ +#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
- struct udevice *dev;
- int ret;
- /* retrieve the device */
- ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_GET_DRIVER(rockchip_efuse), &dev);- if (ret) {
debug("%s: could not find efuse device\n", __func__);return -1;- }
- /* read the cpu_id range from the efuses */
- ret = misc_read(dev, cpuid_offset, cpuid, sizeof(cpuid));
- if (ret) {
debug("%s: reading cpuid from the efuses failed\n",__func__);return -1;- }
+#endif
- return 0;
+}
+int rockchip_cpuid_set(const u8 *cpuid, const u32 cpuid_length) +{
- u8 low[cpuid_length / 2], high[cpuid_length / 2];
- char cpuid_str[cpuid_length * 2 + 1];
- u64 serialno;
- char serialno_str[17];
- int i;
- memset(cpuid_str, 0, sizeof(cpuid_str));
- for (i = 0; i < 16; i++)
sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);- debug("cpuid: %s\n", cpuid_str);
- /*
* Mix the cpuid bytes using the same rules as in* ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c*/- for (i = 0; i < 8; i++) {
low[i] = cpuid[1 + (i << 1)];high[i] = cpuid[i << 1];- }
- serialno = crc32_no_comp(0, low, 8);
- serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
- snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
- env_set("cpuid#", cpuid_str);
- env_set("serial#", serialno_str);
- return 0;
+}
participants (2)
-
Kever Yang -
Rohan Garg