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1 | /* | |
2 | * Copyright 2015 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #ifndef __CONFIG_FSL_CHAIN_TRUST_H | |
8 | #define __CONFIG_FSL_CHAIN_TRUST_H | |
9 | ||
10 | /* For secure boot, since ENVIRONMENT in flash/external memories is | |
11 | * not verified, undef CONFIG_ENV_xxx and set default env | |
12 | * (CONFIG_ENV_IS_NOWHERE) | |
13 | */ | |
14 | #ifdef CONFIG_SECURE_BOOT | |
15 | ||
16 | #undef CONFIG_ENV_IS_IN_EEPROM | |
17 | #undef CONFIG_ENV_IS_IN_NAND | |
18 | #undef CONFIG_ENV_IS_IN_MMC | |
19 | #undef CONFIG_ENV_IS_IN_SPI_FLASH | |
20 | #undef CONFIG_ENV_IS_IN_FLASH | |
21 | ||
22 | #define CONFIG_ENV_IS_NOWHERE | |
23 | ||
24 | #endif | |
25 | ||
26 | #ifdef CONFIG_CHAIN_OF_TRUST | |
27 | ||
28 | #ifndef CONFIG_EXTRA_ENV | |
29 | #define CONFIG_EXTRA_ENV "" | |
30 | #endif | |
31 | ||
32 | /* | |
33 | * Control should not reach back to uboot after validation of images | |
34 | * for secure boot flow and therefore bootscript should have | |
35 | * the bootm command. If control reaches back to uboot anyhow | |
36 | * after validating images, core should just spin. | |
37 | */ | |
38 | ||
39 | /* | |
40 | * Define the key hash for boot script here if public/private key pair used to | |
41 | * sign bootscript are different from the SRK hash put in the fuse | |
42 | * Example of defining KEY_HASH is | |
43 | * #define CONFIG_BOOTSCRIPT_KEY_HASH \ | |
44 | * "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b" | |
45 | */ | |
46 | ||
47 | #ifdef CONFIG_BOOTARGS | |
48 | #define CONFIG_SET_BOOTARGS "setenv bootargs \'" CONFIG_BOOTARGS" \';" | |
49 | #else | |
50 | #define CONFIG_SET_BOOTARGS "setenv bootargs \'root=/dev/ram " \ | |
51 | "rw console=ttyS0,115200 ramdisk_size=600000\';" | |
52 | #endif | |
53 | ||
54 | ||
55 | #ifdef CONFIG_BOOTSCRIPT_KEY_HASH | |
56 | #define CONFIG_SECBOOT \ | |
57 | "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ | |
58 | CONFIG_SET_BOOTARGS \ | |
59 | CONFIG_EXTRA_ENV \ | |
60 | "esbc_validate $bs_hdraddr " \ | |
61 | __stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \ | |
62 | "source $img_addr;" \ | |
63 | "esbc_halt\0" | |
64 | #else | |
65 | #define CONFIG_SECBOOT \ | |
66 | "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ | |
67 | CONFIG_SET_BOOTARGS \ | |
68 | CONFIG_EXTRA_ENV \ | |
69 | "esbc_validate $bs_hdraddr;" \ | |
70 | "source $img_addr;" \ | |
71 | "esbc_halt\0" | |
72 | #endif | |
73 | ||
74 | #ifdef CONFIG_BOOTSCRIPT_COPY_RAM | |
75 | #define CONFIG_BS_COPY_ENV \ | |
76 | "setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \ | |
77 | "setenv bs_hdr_device " __stringify(CONFIG_BS_HDR_ADDR_DEVICE)";" \ | |
78 | "setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \ | |
79 | "setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \ | |
80 | "setenv bs_device " __stringify(CONFIG_BS_ADDR_DEVICE)";" \ | |
81 | "setenv bs_size " __stringify(CONFIG_BS_SIZE)";" | |
82 | ||
83 | /* For secure boot flow, default environment used will be used */ | |
84 | #if defined(CONFIG_SYS_RAMBOOT) | |
85 | #if defined(CONFIG_RAMBOOT_NAND) | |
86 | #define CONFIG_BS_COPY_CMD \ | |
87 | "nand read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \ | |
88 | "nand read $bs_ram $bs_device $bs_size ;" | |
89 | #endif /* CONFIG_RAMBOOT_NAND */ | |
90 | #elif defined(CONFIG_SD_BOOT) | |
91 | #define CONFIG_BS_COPY_CMD \ | |
92 | "mmc read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \ | |
93 | "mmc read $bs_ram $bs_device $bs_size ;" | |
94 | #else /* CONFIG_SD_BOOT */ | |
95 | #define CONFIG_BS_COPY_CMD \ | |
96 | "cp.b $bs_hdr_device $bs_hdr_ram $bs_hdr_size ;" \ | |
97 | "cp.b $bs_device $bs_ram $bs_size ;" | |
98 | #endif | |
99 | #endif /* CONFIG_BOOTSCRIPT_COPY_RAM */ | |
100 | ||
101 | #ifndef CONFIG_BS_COPY_ENV | |
102 | #define CONFIG_BS_COPY_ENV | |
103 | #endif | |
104 | ||
105 | #ifndef CONFIG_BS_COPY_CMD | |
106 | #define CONFIG_BS_COPY_CMD | |
107 | #endif | |
108 | ||
109 | #define CONFIG_CHAIN_BOOT_CMD CONFIG_BS_COPY_ENV \ | |
110 | CONFIG_BS_COPY_CMD \ | |
111 | CONFIG_SECBOOT | |
112 | ||
113 | #endif | |
114 | #endif |