1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2016 NXP Semiconductor, Inc.
4 */
5 #include <common.h>
6 #include <malloc.h>
7 #include <config.h>
8 #include <errno.h>
9 #include <asm/system.h>
10 #include <asm/types.h>
11 #include <asm/arch/soc.h>
12 #ifdef CONFIG_FSL_LSCH3
13 #include <asm/arch/immap_lsch3.h>
14 #elif defined(CONFIG_FSL_LSCH2)
15 #include <asm/arch/immap_lsch2.h>
16 #endif
17 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
18 #include <asm/armv8/sec_firmware.h>
19 #endif
20 #ifdef CONFIG_CHAIN_OF_TRUST
21 #include <fsl_validate.h>
22 #endif
23
24 #ifdef CONFIG_SYS_LS_PPA_FW_IN_NAND
25 #include <nand.h>
26 #elif defined(CONFIG_SYS_LS_PPA_FW_IN_MMC)
27 #include <mmc.h>
28 #endif
29
30 DECLARE_GLOBAL_DATA_PTR;
31
ppa_init(void)32 int ppa_init(void)
33 {
34 unsigned int el = current_el();
35 void *ppa_fit_addr;
36 u32 *boot_loc_ptr_l, *boot_loc_ptr_h;
37 u32 *loadable_l, *loadable_h;
38 int ret;
39
40 #ifdef CONFIG_CHAIN_OF_TRUST
41 uintptr_t ppa_esbc_hdr = 0;
42 uintptr_t ppa_img_addr = 0;
43 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
44 defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
45 void *ppa_hdr_ddr;
46 #endif
47 #endif
48
49 /* Skip if running at lower exception level */
50 if (el < 3) {
51 debug("Skipping PPA init, running at EL%d\n", el);
52 return 0;
53 }
54
55 #ifdef CONFIG_SYS_LS_PPA_FW_IN_XIP
56 ppa_fit_addr = (void *)CONFIG_SYS_LS_PPA_FW_ADDR;
57 debug("%s: PPA image load from XIP\n", __func__);
58 #ifdef CONFIG_CHAIN_OF_TRUST
59 ppa_esbc_hdr = CONFIG_SYS_LS_PPA_ESBC_ADDR;
60 #endif
61 #else /* !CONFIG_SYS_LS_PPA_FW_IN_XIP */
62 size_t fw_length, fdt_header_len = sizeof(struct fdt_header);
63
64 /* Copy PPA image from MMC/SD/NAND to allocated memory */
65 #ifdef CONFIG_SYS_LS_PPA_FW_IN_MMC
66 struct mmc *mmc;
67 int dev = CONFIG_SYS_MMC_ENV_DEV;
68 struct fdt_header *fitp;
69 u32 cnt;
70 u32 blk;
71
72 debug("%s: PPA image load from eMMC/SD\n", __func__);
73
74 ret = mmc_initialize(gd->bd);
75 if (ret) {
76 printf("%s: mmc_initialize() failed\n", __func__);
77 return ret;
78 }
79 mmc = find_mmc_device(dev);
80 if (!mmc) {
81 printf("PPA: MMC cannot find device for PPA firmware\n");
82 return -ENODEV;
83 }
84
85 ret = mmc_init(mmc);
86 if (ret) {
87 printf("%s: mmc_init() failed\n", __func__);
88 return ret;
89 }
90
91 fitp = malloc(roundup(fdt_header_len, 512));
92 if (!fitp) {
93 printf("PPA: malloc failed for FIT header(size 0x%zx)\n",
94 roundup(fdt_header_len, 512));
95 return -ENOMEM;
96 }
97
98 blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
99 cnt = DIV_ROUND_UP(fdt_header_len, 512);
100 debug("%s: MMC read PPA FIT header: dev # %u, block # %u, count %u\n",
101 __func__, dev, blk, cnt);
102 ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, fitp);
103 if (ret != cnt) {
104 free(fitp);
105 printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
106 CONFIG_SYS_LS_PPA_FW_ADDR);
107 return -EIO;
108 }
109
110 ret = fdt_check_header(fitp);
111 if (ret) {
112 free(fitp);
113 printf("%s: fdt_check_header() failed\n", __func__);
114 return ret;
115 }
116
117 #ifdef CONFIG_CHAIN_OF_TRUST
118 ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
119 if (!ppa_hdr_ddr) {
120 printf("PPA: malloc failed for PPA header\n");
121 return -ENOMEM;
122 }
123
124 blk = CONFIG_SYS_LS_PPA_ESBC_ADDR >> 9;
125 cnt = DIV_ROUND_UP(CONFIG_LS_PPA_ESBC_HDR_SIZE, 512);
126 ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, ppa_hdr_ddr);
127 if (ret != cnt) {
128 free(ppa_hdr_ddr);
129 printf("MMC/SD read of PPA header failed\n");
130 return -EIO;
131 }
132 debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
133
134 ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
135 #endif
136
137 fw_length = fdt_totalsize(fitp);
138 free(fitp);
139
140 fw_length = roundup(fw_length, 512);
141 ppa_fit_addr = malloc(fw_length);
142 if (!ppa_fit_addr) {
143 printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
144 fw_length);
145 return -ENOMEM;
146 }
147
148 blk = CONFIG_SYS_LS_PPA_FW_ADDR / 512;
149 cnt = DIV_ROUND_UP(fw_length, 512);
150 debug("%s: MMC read PPA FIT image: dev # %u, block # %u, count %u\n",
151 __func__, dev, blk, cnt);
152 ret = blk_dread(mmc_get_blk_desc(mmc), blk, cnt, ppa_fit_addr);
153 if (ret != cnt) {
154 free(ppa_fit_addr);
155 printf("MMC/SD read of PPA FIT header at offset 0x%x failed\n",
156 CONFIG_SYS_LS_PPA_FW_ADDR);
157 return -EIO;
158 }
159
160 #elif defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
161 struct fdt_header fit;
162
163 debug("%s: PPA image load from NAND\n", __func__);
164
165 nand_init();
166 ret = nand_read(get_nand_dev_by_index(0),
167 (loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
168 &fdt_header_len, (u_char *)&fit);
169 if (ret == -EUCLEAN) {
170 printf("NAND read of PPA FIT header at offset 0x%x failed\n",
171 CONFIG_SYS_LS_PPA_FW_ADDR);
172 return -EIO;
173 }
174
175 ret = fdt_check_header(&fit);
176 if (ret) {
177 printf("%s: fdt_check_header() failed\n", __func__);
178 return ret;
179 }
180
181 #ifdef CONFIG_CHAIN_OF_TRUST
182 ppa_hdr_ddr = malloc(CONFIG_LS_PPA_ESBC_HDR_SIZE);
183 if (!ppa_hdr_ddr) {
184 printf("PPA: malloc failed for PPA header\n");
185 return -ENOMEM;
186 }
187
188 fw_length = CONFIG_LS_PPA_ESBC_HDR_SIZE;
189
190 ret = nand_read(get_nand_dev_by_index(0),
191 (loff_t)CONFIG_SYS_LS_PPA_ESBC_ADDR,
192 &fw_length, (u_char *)ppa_hdr_ddr);
193 if (ret == -EUCLEAN) {
194 free(ppa_hdr_ddr);
195 printf("NAND read of PPA firmware at offset 0x%x failed\n",
196 CONFIG_SYS_LS_PPA_FW_ADDR);
197 return -EIO;
198 }
199 debug("Read PPA header to 0x%p\n", ppa_hdr_ddr);
200
201 ppa_esbc_hdr = (uintptr_t)ppa_hdr_ddr;
202 #endif
203
204 fw_length = fdt_totalsize(&fit);
205
206 ppa_fit_addr = malloc(fw_length);
207 if (!ppa_fit_addr) {
208 printf("PPA: malloc failed for PPA image(size 0x%zx)\n",
209 fw_length);
210 return -ENOMEM;
211 }
212
213 ret = nand_read(get_nand_dev_by_index(0),
214 (loff_t)CONFIG_SYS_LS_PPA_FW_ADDR,
215 &fw_length, (u_char *)ppa_fit_addr);
216 if (ret == -EUCLEAN) {
217 free(ppa_fit_addr);
218 printf("NAND read of PPA firmware at offset 0x%x failed\n",
219 CONFIG_SYS_LS_PPA_FW_ADDR);
220 return -EIO;
221 }
222 #else
223 #error "No CONFIG_SYS_LS_PPA_FW_IN_xxx defined"
224 #endif
225
226 #endif
227
228 #ifdef CONFIG_CHAIN_OF_TRUST
229 ppa_img_addr = (uintptr_t)ppa_fit_addr;
230 if (fsl_check_boot_mode_secure() != 0) {
231 /*
232 * In case of failure in validation, fsl_secboot_validate
233 * would not return back in case of Production environment
234 * with ITS=1. In Development environment (ITS=0 and
235 * SB_EN=1), the function may return back in case of
236 * non-fatal failures.
237 */
238 ret = fsl_secboot_validate(ppa_esbc_hdr,
239 PPA_KEY_HASH,
240 &ppa_img_addr);
241 if (ret != 0)
242 printf("SEC firmware(s) validation failed\n");
243 else
244 printf("SEC firmware(s) validation Successful\n");
245 }
246 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
247 defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
248 free(ppa_hdr_ddr);
249 #endif
250 #endif
251
252 #ifdef CONFIG_FSL_LSCH3
253 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
254 boot_loc_ptr_l = &gur->bootlocptrl;
255 boot_loc_ptr_h = &gur->bootlocptrh;
256
257 /* Assign addresses to loadable ptrs */
258 loadable_l = &gur->scratchrw[4];
259 loadable_h = &gur->scratchrw[5];
260 #elif defined(CONFIG_FSL_LSCH2)
261 struct ccsr_scfg __iomem *scfg = (void *)(CONFIG_SYS_FSL_SCFG_ADDR);
262 boot_loc_ptr_l = &scfg->scratchrw[1];
263 boot_loc_ptr_h = &scfg->scratchrw[0];
264
265 /* Assign addresses to loadable ptrs */
266 loadable_l = &scfg->scratchrw[2];
267 loadable_h = &scfg->scratchrw[3];
268 #endif
269
270 debug("fsl-ppa: boot_loc_ptr_l = 0x%p, boot_loc_ptr_h =0x%p\n",
271 boot_loc_ptr_l, boot_loc_ptr_h);
272 ret = sec_firmware_init(ppa_fit_addr, boot_loc_ptr_l, boot_loc_ptr_h,
273 loadable_l, loadable_h);
274
275 #if defined(CONFIG_SYS_LS_PPA_FW_IN_MMC) || \
276 defined(CONFIG_SYS_LS_PPA_FW_IN_NAND)
277 free(ppa_fit_addr);
278 #endif
279
280 return ret;
281 }
282