1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
|
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (C) 2019, STMicroelectronics - All Rights Reserved
*/
#include <common.h>
#include <fdt_support.h>
#include <asm/arch/sys_proto.h>
#include <dt-bindings/pinctrl/stm32-pinfunc.h>
#include <linux/io.h>
#define ETZPC_DECPROT(n) (STM32_ETZPC_BASE + 0x10 + 4 * (n))
#define ETZPC_DECPROT_NB 6
#define DECPROT_MASK 0x03
#define NB_PROT_PER_REG 0x10
#define DECPROT_NB_BITS 2
#define DECPROT_SECURED 0x00
#define DECPROT_WRITE_SECURE 0x01
#define DECPROT_MCU_ISOLATION 0x02
#define DECPROT_NON_SECURED 0x03
#define ETZPC_RESERVED 0xffffffff
#define STM32_FDCAN_BASE 0x4400e000
#define STM32_CRYP2_BASE 0x4c005000
#define STM32_CRYP1_BASE 0x54001000
#define STM32_GPU_BASE 0x59000000
#define STM32_DSI_BASE 0x5a000000
static const u32 stm32mp1_ip_addr[] = {
0x5c008000, /* 00 stgenc */
0x54000000, /* 01 bkpsram */
0x5c003000, /* 02 iwdg1 */
0x5c000000, /* 03 usart1 */
0x5c001000, /* 04 spi6 */
0x5c002000, /* 05 i2c4 */
ETZPC_RESERVED, /* 06 reserved */
0x54003000, /* 07 rng1 */
0x54002000, /* 08 hash1 */
STM32_CRYP1_BASE, /* 09 cryp1 */
0x5a003000, /* 0A ddrctrl */
0x5a004000, /* 0B ddrphyc */
0x5c009000, /* 0C i2c6 */
ETZPC_RESERVED, /* 0D reserved */
ETZPC_RESERVED, /* 0E reserved */
ETZPC_RESERVED, /* 0F reserved */
0x40000000, /* 10 tim2 */
0x40001000, /* 11 tim3 */
0x40002000, /* 12 tim4 */
0x40003000, /* 13 tim5 */
0x40004000, /* 14 tim6 */
0x40005000, /* 15 tim7 */
0x40006000, /* 16 tim12 */
0x40007000, /* 17 tim13 */
0x40008000, /* 18 tim14 */
0x40009000, /* 19 lptim1 */
0x4000a000, /* 1A wwdg1 */
0x4000b000, /* 1B spi2 */
0x4000c000, /* 1C spi3 */
0x4000d000, /* 1D spdifrx */
0x4000e000, /* 1E usart2 */
0x4000f000, /* 1F usart3 */
0x40010000, /* 20 uart4 */
0x40011000, /* 21 uart5 */
0x40012000, /* 22 i2c1 */
0x40013000, /* 23 i2c2 */
0x40014000, /* 24 i2c3 */
0x40015000, /* 25 i2c5 */
0x40016000, /* 26 cec */
0x40017000, /* 27 dac */
0x40018000, /* 28 uart7 */
0x40019000, /* 29 uart8 */
ETZPC_RESERVED, /* 2A reserved */
ETZPC_RESERVED, /* 2B reserved */
0x4001c000, /* 2C mdios */
ETZPC_RESERVED, /* 2D reserved */
ETZPC_RESERVED, /* 2E reserved */
ETZPC_RESERVED, /* 2F reserved */
0x44000000, /* 30 tim1 */
0x44001000, /* 31 tim8 */
ETZPC_RESERVED, /* 32 reserved */
0x44003000, /* 33 usart6 */
0x44004000, /* 34 spi1 */
0x44005000, /* 35 spi4 */
0x44006000, /* 36 tim15 */
0x44007000, /* 37 tim16 */
0x44008000, /* 38 tim17 */
0x44009000, /* 39 spi5 */
0x4400a000, /* 3A sai1 */
0x4400b000, /* 3B sai2 */
0x4400c000, /* 3C sai3 */
0x4400d000, /* 3D dfsdm */
STM32_FDCAN_BASE, /* 3E tt_fdcan */
ETZPC_RESERVED, /* 3F reserved */
0x50021000, /* 40 lptim2 */
0x50022000, /* 41 lptim3 */
0x50023000, /* 42 lptim4 */
0x50024000, /* 43 lptim5 */
0x50027000, /* 44 sai4 */
0x50025000, /* 45 vrefbuf */
0x4c006000, /* 46 dcmi */
0x4c004000, /* 47 crc2 */
0x48003000, /* 48 adc */
0x4c002000, /* 49 hash2 */
0x4c003000, /* 4A rng2 */
STM32_CRYP2_BASE, /* 4B cryp2 */
ETZPC_RESERVED, /* 4C reserved */
ETZPC_RESERVED, /* 4D reserved */
ETZPC_RESERVED, /* 4E reserved */
ETZPC_RESERVED, /* 4F reserved */
ETZPC_RESERVED, /* 50 sram1 */
ETZPC_RESERVED, /* 51 sram2 */
ETZPC_RESERVED, /* 52 sram3 */
ETZPC_RESERVED, /* 53 sram4 */
ETZPC_RESERVED, /* 54 retram */
0x49000000, /* 55 otg */
0x48004000, /* 56 sdmmc3 */
0x48005000, /* 57 dlybsd3 */
0x48000000, /* 58 dma1 */
0x48001000, /* 59 dma2 */
0x48002000, /* 5A dmamux */
0x58002000, /* 5B fmc */
0x58003000, /* 5C qspi */
0x58004000, /* 5D dlybq */
0x5800a000, /* 5E eth */
ETZPC_RESERVED, /* 5F reserved */
};
/* fdt helper */
static bool fdt_disable_subnode_by_address(void *fdt, int offset, u32 addr)
{
int node;
fdt_addr_t regs;
for (node = fdt_first_subnode(fdt, offset);
node >= 0;
node = fdt_next_subnode(fdt, node)) {
regs = fdtdec_get_addr(fdt, node, "reg");
if (addr == regs) {
if (fdtdec_get_is_enabled(fdt, node)) {
fdt_status_disabled(fdt, node);
return true;
}
return false;
}
}
return false;
}
static int stm32_fdt_fixup_etzpc(void *fdt, int soc_node)
{
const u32 *array;
int array_size, i;
int offset, shift;
u32 addr, status, decprot[ETZPC_DECPROT_NB];
array = stm32mp1_ip_addr;
array_size = ARRAY_SIZE(stm32mp1_ip_addr);
for (i = 0; i < ETZPC_DECPROT_NB; i++)
decprot[i] = readl(ETZPC_DECPROT(i));
for (i = 0; i < array_size; i++) {
offset = i / NB_PROT_PER_REG;
shift = (i % NB_PROT_PER_REG) * DECPROT_NB_BITS;
status = (decprot[offset] >> shift) & DECPROT_MASK;
addr = array[i];
debug("ETZPC: 0x%08x decprot %d=%d\n", addr, i, status);
if (addr == ETZPC_RESERVED ||
status == DECPROT_NON_SECURED)
continue;
if (fdt_disable_subnode_by_address(fdt, soc_node, addr))
printf("ETZPC: 0x%08x node disabled, decprot %d=%d\n",
addr, i, status);
}
return 0;
}
/* deactivate all the cpu except core 0 */
static void stm32_fdt_fixup_cpu(void *blob, char *name)
{
int off;
u32 reg;
off = fdt_path_offset(blob, "/cpus");
if (off < 0) {
printf("%s: couldn't find /cpus node\n", __func__);
return;
}
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
reg = fdtdec_get_addr(blob, off, "reg");
if (reg != 0) {
fdt_del_node(blob, off);
printf("FDT: cpu %d node remove for %s\n", reg, name);
/* after delete we can't trust the offsets anymore */
off = -1;
}
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
}
static void stm32_fdt_disable(void *fdt, int offset, u32 addr,
const char *string, const char *name)
{
if (fdt_disable_subnode_by_address(fdt, offset, addr))
printf("FDT: %s@%08x node disabled for %s\n",
string, addr, name);
}
/*
* This function is called right before the kernel is booted. "blob" is the
* device tree that will be passed to the kernel.
*/
int ft_system_setup(void *blob, bd_t *bd)
{
int ret = 0;
int soc;
u32 pkg, cpu;
char name[SOC_NAME_SIZE];
soc = fdt_path_offset(blob, "/soc");
if (soc < 0)
return soc;
if (CONFIG_IS_ENABLED(STM32_ETZPC)) {
ret = stm32_fdt_fixup_etzpc(blob, soc);
if (ret)
return ret;
}
/* MPUs Part Numbers and name*/
cpu = get_cpu_type();
get_soc_name(name);
switch (cpu) {
case CPU_STM32MP151Fxx:
case CPU_STM32MP151Dxx:
case CPU_STM32MP151Cxx:
case CPU_STM32MP151Axx:
stm32_fdt_fixup_cpu(blob, name);
/* after cpu delete we can't trust the soc offsets anymore */
soc = fdt_path_offset(blob, "/soc");
stm32_fdt_disable(blob, soc, STM32_FDCAN_BASE, "can", name);
/* fall through */
case CPU_STM32MP153Fxx:
case CPU_STM32MP153Dxx:
case CPU_STM32MP153Cxx:
case CPU_STM32MP153Axx:
stm32_fdt_disable(blob, soc, STM32_GPU_BASE, "gpu", name);
stm32_fdt_disable(blob, soc, STM32_DSI_BASE, "dsi", name);
break;
default:
break;
}
switch (cpu) {
case CPU_STM32MP157Dxx:
case CPU_STM32MP157Axx:
case CPU_STM32MP153Dxx:
case CPU_STM32MP153Axx:
case CPU_STM32MP151Dxx:
case CPU_STM32MP151Axx:
stm32_fdt_disable(blob, soc, STM32_CRYP1_BASE, "cryp", name);
stm32_fdt_disable(blob, soc, STM32_CRYP2_BASE, "cryp", name);
break;
default:
break;
}
switch (get_cpu_package()) {
case PKG_AA_LBGA448:
pkg = STM32MP_PKG_AA;
break;
case PKG_AB_LBGA354:
pkg = STM32MP_PKG_AB;
break;
case PKG_AC_TFBGA361:
pkg = STM32MP_PKG_AC;
break;
case PKG_AD_TFBGA257:
pkg = STM32MP_PKG_AD;
break;
default:
pkg = 0;
break;
}
if (pkg) {
do_fixup_by_compat_u32(blob, "st,stm32mp157-pinctrl",
"st,package", pkg, false);
do_fixup_by_compat_u32(blob, "st,stm32mp157-z-pinctrl",
"st,package", pkg, false);
}
return ret;
}
|
