| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2010-2012 |
| 3 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <bootcount.h> |
| 9 | #include <linux/compiler.h> |
| 10 | |
| 11 | /* |
| 12 | * Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This |
| 13 | * way, some boards can define it directly in their config header. |
| 14 | */ |
| 15 | #if !defined(CONFIG_SYS_BOOTCOUNT_ADDR) |
| 16 | |
| 17 | #if defined(CONFIG_MPC5xxx) |
| 18 | #define CONFIG_SYS_BOOTCOUNT_ADDR (MPC5XXX_CDM_BRDCRMB) |
| 19 | #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD |
| 20 | #endif /* defined(CONFIG_MPC5xxx) */ |
| 21 | |
| 22 | #if defined(CONFIG_MPC512X) |
| 23 | #define CONFIG_SYS_BOOTCOUNT_ADDR (&((immap_t *)CONFIG_SYS_IMMR)->clk.bcr) |
| 24 | #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD |
| 25 | #endif /* defined(CONFIG_MPC512X) */ |
| 26 | |
| 27 | #if defined(CONFIG_8xx) |
| 28 | #define CONFIG_SYS_BOOTCOUNT_ADDR (((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_dpmem + \ |
| 29 | CPM_BOOTCOUNT_ADDR) |
| 30 | #endif /* defined(CONFIG_8xx) */ |
| 31 | |
| 32 | #if defined(CONFIG_MPC8260) |
| 33 | #include <asm/cpm_8260.h> |
| 34 | |
| 35 | #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR) |
| 36 | #endif /* defined(CONFIG_MPC8260) */ |
| 37 | |
| 38 | #if defined(CONFIG_QE) |
| 39 | #include <asm/immap_qe.h> |
| 40 | |
| 41 | #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \ |
| 42 | QE_MURAM_SIZE - 2 * sizeof(u32)) |
| 43 | #endif /* defined(CONFIG_MPC8360) */ |
| 44 | |
| 45 | #if defined(CONFIG_4xx) |
| 46 | #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_OCM_DATA_ADDR + \ |
| 47 | CONFIG_SYS_BOOTCOUNT_ADDR) |
| 48 | #endif /* defined(CONFIG_4xx) */ |
| 49 | |
| 50 | #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */ |
| 51 | |
| 52 | /* Now implement the generic default functions */ |
| 53 | #if defined(CONFIG_SYS_BOOTCOUNT_ADDR) |
| 54 | __weak void bootcount_store(ulong a) |
| 55 | { |
| 56 | void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; |
| 57 | |
| 58 | #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) |
| 59 | raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a); |
| 60 | #else |
| 61 | raw_bootcount_store(reg, a); |
| 62 | raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC); |
| 63 | #endif |
| 64 | } |
| 65 | |
| 66 | __weak ulong bootcount_load(void) |
| 67 | { |
| 68 | void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR; |
| 69 | |
| 70 | #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) |
| 71 | u32 tmp = raw_bootcount_load(reg); |
| 72 | |
| 73 | if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000)) |
| 74 | return 0; |
| 75 | else |
| 76 | return (tmp & 0x0000ffff); |
| 77 | #else |
| 78 | if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC) |
| 79 | return 0; |
| 80 | else |
| 81 | return raw_bootcount_load(reg); |
| 82 | #endif |
| 83 | } |
| 84 | #endif |