diff options
Diffstat (limited to 'board/theobroma-systems/puma_rk3399')
| -rw-r--r-- | board/theobroma-systems/puma_rk3399/puma-rk3399.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index 0a8861a..ea6d256 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -9,10 +9,15 @@ #include <ram.h> #include <dm/pinctrl.h> #include <dm/uclass-internal.h> +#include <misc.h> +#include <asm/setup.h> #include <asm/arch/periph.h> #include <power/regulator.h> #include <u-boot/sha256.h> +#define RK3399_CPUID_OFF 0x7 +#define RK3399_CPUID_LEN 0x10 + DECLARE_GLOBAL_DATA_PTR; #define RK3399_CPUID_OFF 0x7 @@ -63,6 +68,81 @@ out: return 0; } +static void setup_serial(void) +{ +#if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) + struct udevice *dev; + int ret, i; + u8 cpuid[RK3399_CPUID_LEN]; + u8 low[RK3399_CPUID_LEN/2], high[RK3399_CPUID_LEN/2]; + char cpuid_str[RK3399_CPUID_LEN * 2 + 1]; + u64 serialno; + char serialno_str[16]; + + /* the first misc device will be used */ + ret = uclass_get_device(UCLASS_MISC, 0, &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, RK3399_CPUID_OFF, &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), "%llx", serialno); + + setenv("cpuid#", cpuid_str); + setenv("serial#", serialno_str); +#endif + + return; +} + +int misc_init_r(void) +{ + setup_serial(); + + return 0; +} + +#ifdef CONFIG_SERIAL_TAG +void get_board_serial(struct tag_serialnr *serialnr) +{ + char *serial_string; + u64 serial = 0; + + serial_string = getenv("serial#"); + + if (serial_string) + serial = simple_strtoull(serial_string, NULL, 16); + + serialnr->high = (u32)(serial >> 32); + serialnr->low = (u32)(serial & 0xffffffff); +} +#endif + int dram_init(void) { struct ram_info ram; |