58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
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#ifndef BOOT_SHARE_H
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#define BOOT_SHARE_H
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#include <stdint.h>
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/*==== BL ↔ APP 共享内存（热复位保持）====
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* 位于 SRAM 顶部，不属于任何段，启动代码不会清零；
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* 软件复位/看门狗复位后内容保持，断电后丢失。
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* 注意：若 APP 的 RAM 用量增长超过 0x2000BF00，需调整该地址 */
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#define BOOT_SHARE_ADDR 0x2000BF00u
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#define BOOT_SHARE_MAGIC 0x52534852u /* 'RSHR' */
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typedef struct {
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uint32_t magic; /* BOOT_SHARE_MAGIC */
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uint32_t csr_flags; /* BL 开机时写入的 RCC->CSR（复位原因标志） */
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uint32_t uptime_sec; /* APP 每秒更新的本轮运行时长（热复位不丢） */
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uint32_t pending_reason; /* APP 主动复位前写入的细分原因码（RSN_x） */
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uint32_t checksum; /* 前 4 项累加和 */
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} boot_share_t;
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#define BOOT_SHARE ((volatile boot_share_t *)BOOT_SHARE_ADDR)
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/*==== 重启原因码 ====*/
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#define RSN_UNKNOWN 0 /* 未知 */
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#define RSN_POWER_ON 1 /* 上电/意外掉电 */
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#define RSN_PIN_RESET 2 /* 按键复位 */
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#define RSN_WATCHDOG 3 /* 卡死看门狗溢出 */
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#define RSN_KICKED 4 /* 平台/服务器踢下线 */
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#define RSN_PING_TIMEOUT 5 /* 心跳超时（服务器无响应/假在线） */
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#define RSN_NO_SERVICE 6 /* 4G 无网络服务 */
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#define RSN_NO_SIM 7 /* 无 SIM 卡（预留） */
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#define RSN_OTA_UPDATE 8 /* OTA 升级完成重启 */
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#define RSN_OTA_HEALTH 9 /* OTA 健康检查超时 */
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#define RSN_4G_FAIL 10 /* 4G 初始化失败 */
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#define RSN_CMD_RESET 11 /* 串口 RESET 命令 */
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#define RSN_CMD_OTA 12 /* 串口 OTA 命令 */
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#define RSN_CMD_RECOVERY 13 /* 串口 RECOVERY 命令 */
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#define RSN_POWER_LOSS 14 /* 外部 12V 断电（法拉电容续航中记录） */
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#define RSN_4G_MODULE 15 /* 4G 模组异常自重启(boot.rom) */
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static inline uint32_t boot_share_sum(const volatile boot_share_t *s)
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{
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return s->magic + s->csr_flags + s->uptime_sec + s->pending_reason;
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}
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static inline int boot_share_valid(void)
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{
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return BOOT_SHARE->magic == BOOT_SHARE_MAGIC &&
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BOOT_SHARE->checksum == boot_share_sum(BOOT_SHARE);
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}
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static inline void boot_share_store(void)
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{
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BOOT_SHARE->checksum = boot_share_sum(BOOT_SHARE);
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}
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#endif /* BOOT_SHARE_H */
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