125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
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* (C) Copyright 2017 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <misc.h>
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#include <time.h>
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#include <asm/gpio.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/arch/uart.h>
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#include <asm/arch/vendor.h>
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#include <configs/gva_rk3229.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* define serialno max length, the max length is 512 Bytes
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* The remaining bytes are used to ensure that the first 512 bytes
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* are valid when executing 'env_set("serial#", value)'.
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*/
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#define VENDOR_SN_MAX 513
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/* These values are provided by the chip documentation */
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#define RK3229_CPUID_OFF 0x7
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#define RK3229_CPUID_LEN 0x10
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/*
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* First obtain the serial number from vendor partition,
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* if vendor partition is not initialized, then generate
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* a default serial number according to CPU Id.
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*/
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int set_serialno(void)
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{
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char serialno_str[VENDOR_SN_MAX];
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struct udevice *dev;
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u8 cpuid[RK3229_CPUID_LEN] = {0};
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u8 low[RK3229_CPUID_LEN/2], high[RK3229_CPUID_LEN/2];
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u64 serialno;
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int ret, i;
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/* Read serial number from vendor storage part */
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memset(serialno_str, 0, VENDOR_SN_MAX);
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#ifdef CONFIG_VENDOR_STORAGE_API
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ret = vendor_storage_read(VENDOR_SN_ID, serialno_str, (VENDOR_SN_MAX-1));
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if (ret > 0) {
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env_set("serial#", serialno_str);
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} else {
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#endif
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#ifdef CONFIG_ROCKCHIP_EFUSE
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/* retrieve the device */
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ret = uclass_get_device_by_driver(UCLASS_MISC,
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DM_GET_DRIVER(rockchip_efuse), &dev);
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if (ret) {
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printf("%s: could not find efuse device\n", __func__);
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return ret;
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}
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/* read the cpu_id range from the efuses */
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ret = misc_read(dev, RK3229_CPUID_OFF, &cpuid, sizeof(cpuid));
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if (ret) {
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printf("%s: reading cpuid from the efuses failed\n", __func__);
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return ret;
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}
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#endif
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/* Generate the serial number based on CPU ID */
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for (i = 0; i < 8; i++) {
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low[i] = cpuid[1 + (i << 1)];
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high[i] = cpuid[i << 1];
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}
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serialno = crc32_no_comp(0, low, 8);
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serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
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snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno);
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env_set("serial#", serialno_str);
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#ifdef CONFIG_VENDOR_STORAGE_API
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}
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#endif
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return 0;
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}
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#ifdef CONFIG_MISC_INIT_R
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int misc_init_r(void)
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{
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set_serialno();
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return 0;
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}
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#endif
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#ifdef CONFIG_SERIAL_TAG
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void get_board_serial(struct tag_serialnr *serialnr)
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{
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char *serial_string;
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u64 serial = 0;
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serial_string = env_get("serial#");
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if (serial_string)
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serial = simple_strtoull(serial_string, NULL, 16);
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serialnr->high = (u32)(serial >> 32);
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serialnr->low = (u32)(serial & 0xffffffff);
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}
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#endif
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#define FASTBOOT_KEY_GPIO 43 /*GPIO1B3*/
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int fastboot_key_pressed(void)
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{
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gpio_request(FASTBOOT_KEY_GPIO, "fastboot_key");
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gpio_direction_input(FASTBOOT_KEY_GPIO);
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return !gpio_get_value(FASTBOOT_KEY_GPIO);
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}
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int rk_board_late_init(void)
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{
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if (fastboot_key_pressed()) {
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printf("enter fastboot!\n");
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env_set("preboot", "setenv preboot; fastboot usb0");
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}
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return 0;
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}
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