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1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * AM6: SoC specific initialization
4  *
5  * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
6  *      Lokesh Vutla <[email protected]>
7  */
8
9 #include <common.h>
10 #include <fdt_support.h>
11 #include <init.h>
12 #include <asm/io.h>
13 #include <spl.h>
14 #include <asm/arch/hardware.h>
15 #include <asm/arch/sysfw-loader.h>
16 #include <asm/arch/sys_proto.h>
17 #include "common.h"
18 #include <dm.h>
19 #include <dm/uclass-internal.h>
20 #include <dm/pinctrl.h>
21 #include <linux/soc/ti/ti_sci_protocol.h>
22 #include <log.h>
23 #include <mmc.h>
24 #include <stdlib.h>
25
26 DECLARE_GLOBAL_DATA_PTR;
27
28 #ifdef CONFIG_SPL_BUILD
29 #ifdef CONFIG_K3_LOAD_SYSFW
30 #ifdef CONFIG_TI_SECURE_DEVICE
31 struct fwl_data main_cbass_fwls[] = {
32         { "MMCSD1_CFG", 2057, 1 },
33         { "MMCSD0_CFG", 2058, 1 },
34         { "USB3SS0_SLV0", 2176, 2 },
35         { "PCIE0_SLV", 2336, 8 },
36         { "PCIE1_SLV", 2337, 8 },
37         { "PCIE0_CFG", 2688, 1 },
38         { "PCIE1_CFG", 2689, 1 },
39 }, mcu_cbass_fwls[] = {
40         { "MCU_ARMSS0_CORE0_SLV", 1024, 1 },
41         { "MCU_ARMSS0_CORE1_SLV", 1028, 1 },
42         { "MCU_FSS0_S1", 1033, 8 },
43         { "MCU_FSS0_S0", 1036, 8 },
44         { "MCU_CPSW0", 1220, 1 },
45 };
46 #endif
47 #endif
48
49 static void ctrl_mmr_unlock(void)
50 {
51         /* Unlock all WKUP_CTRL_MMR0 module registers */
52         mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
53         mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
54         mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
55         mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
56         mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
57         mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);
58
59         /* Unlock all MCU_CTRL_MMR0 module registers */
60         mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
61         mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
62         mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
63         mmr_unlock(MCU_CTRL_MMR0_BASE, 6);
64
65         /* Unlock all CTRL_MMR0 module registers */
66         mmr_unlock(CTRL_MMR0_BASE, 0);
67         mmr_unlock(CTRL_MMR0_BASE, 1);
68         mmr_unlock(CTRL_MMR0_BASE, 2);
69         mmr_unlock(CTRL_MMR0_BASE, 3);
70         mmr_unlock(CTRL_MMR0_BASE, 6);
71         mmr_unlock(CTRL_MMR0_BASE, 7);
72 }
73
74 /*
75  * This uninitialized global variable would normal end up in the .bss section,
76  * but the .bss is cleared between writing and reading this variable, so move
77  * it to the .data section.
78  */
79 u32 bootindex __attribute__((section(".data")));
80
81 static void store_boot_index_from_rom(void)
82 {
83         bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
84 }
85
86 #if defined(CONFIG_K3_LOAD_SYSFW) && CONFIG_IS_ENABLED(DM_MMC)
87 void k3_mmc_stop_clock(void)
88 {
89         if (spl_boot_device() == BOOT_DEVICE_MMC1) {
90                 struct mmc *mmc = find_mmc_device(0);
91
92                 if (!mmc)
93                         return;
94
95                 mmc->saved_clock = mmc->clock;
96                 mmc_set_clock(mmc, 0, true);
97         }
98 }
99
100 void k3_mmc_restart_clock(void)
101 {
102         if (spl_boot_device() == BOOT_DEVICE_MMC1) {
103                 struct mmc *mmc = find_mmc_device(0);
104
105                 if (!mmc)
106                         return;
107
108                 mmc_set_clock(mmc, mmc->saved_clock, false);
109         }
110 }
111 #else
112 void k3_mmc_stop_clock(void) {}
113 void k3_mmc_restart_clock(void) {}
114 #endif
115 #if CONFIG_IS_ENABLED(DFU) || CONFIG_IS_ENABLED(USB_STORAGE)
116 #define CTRLMMR_SERDES0_CTRL    0x00104080
117 #define PCIE_LANE0              0x1
118 static int fixup_usb_boot(void)
119 {
120         int ret;
121
122         switch (spl_boot_device()) {
123         case BOOT_DEVICE_USB:
124                 /*
125                  * If bootmode is Host bootmode, fixup the dr_mode to host
126                  * before the dwc3 bind takes place
127                  */
128                 ret = fdt_find_and_setprop((void *)gd->fdt_blob,
129                                 "/interconnect@100000/dwc3@4000000/usb@10000",
130                                 "dr_mode", "host", 11, 0);
131                 if (ret)
132                         printf("%s: fdt_find_and_setprop() failed:%d\n", __func__,
133                                ret);
134                 fallthrough;
135         case BOOT_DEVICE_DFU:
136                 /*
137                  * The serdes mux between PCIe and USB3 needs to be set to PCIe for
138                  * accessing the interface at USB 2.0
139                  */
140                 writel(PCIE_LANE0, CTRLMMR_SERDES0_CTRL);
141         default:
142                 break;
143         }
144
145         return 0;
146 }
147
148 int fdtdec_board_setup(const void *fdt_blob)
149 {
150         return fixup_usb_boot();
151 }
152 #endif
153 void board_init_f(ulong dummy)
154 {
155 #if defined(CONFIG_K3_LOAD_SYSFW) || defined(CONFIG_K3_AM654_DDRSS)
156         struct udevice *dev;
157         size_t pool_size;
158         void *pool_addr;
159         int ret;
160 #endif
161         /*
162          * Cannot delay this further as there is a chance that
163          * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
164          */
165         store_boot_index_from_rom();
166
167         /* Make all control module registers accessible */
168         ctrl_mmr_unlock();
169
170 #ifdef CONFIG_CPU_V7R
171         disable_linefill_optimization();
172         setup_k3_mpu_regions();
173 #endif
174
175         /* Init DM early in-order to invoke system controller */
176         spl_early_init();
177
178 #ifdef CONFIG_K3_EARLY_CONS
179         /*
180          * Allow establishing an early console as required for example when
181          * doing a UART-based boot. Note that this console may not "survive"
182          * through a SYSFW PM-init step and will need a re-init in some way
183          * due to changing module clock frequencies.
184          */
185         early_console_init();
186 #endif
187
188 #ifdef CONFIG_K3_LOAD_SYSFW
189         /*
190          * Initialize an early full malloc environment. Do so by allocating a
191          * new malloc area inside the currently active pre-relocation "first"
192          * malloc pool of which we use all that's left.
193          */
194         pool_size = CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr;
195         pool_addr = malloc(pool_size);
196         if (!pool_addr)
197                 panic("ERROR: Can't allocate full malloc pool!\n");
198
199         mem_malloc_init((ulong)pool_addr, (ulong)pool_size);
200         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
201         debug("%s: initialized an early full malloc pool at 0x%08lx of 0x%lx bytes\n",
202               __func__, (unsigned long)pool_addr, (unsigned long)pool_size);
203         /*
204          * Process pinctrl for the serial0 a.k.a. WKUP_UART0 module and continue
205          * regardless of the result of pinctrl. Do this without probing the
206          * device, but instead by searching the device that would request the
207          * given sequence number if probed. The UART will be used by the system
208          * firmware (SYSFW) image for various purposes and SYSFW depends on us
209          * to initialize its pin settings.
210          */
211         ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
212         if (!ret)
213                 pinctrl_select_state(dev, "default");
214
215         /*
216          * Load, start up, and configure system controller firmware while
217          * also populating the SYSFW post-PM configuration callback hook.
218          */
219         k3_sysfw_loader(false, k3_mmc_stop_clock, k3_mmc_restart_clock);
220
221         /* Prepare console output */
222         preloader_console_init();
223
224         /* Disable ROM configured firewalls right after loading sysfw */
225 #ifdef CONFIG_TI_SECURE_DEVICE
226         remove_fwl_configs(main_cbass_fwls, ARRAY_SIZE(main_cbass_fwls));
227         remove_fwl_configs(mcu_cbass_fwls, ARRAY_SIZE(mcu_cbass_fwls));
228 #endif
229 #else
230         /* Prepare console output */
231         preloader_console_init();
232 #endif
233
234         /* Output System Firmware version info */
235         k3_sysfw_print_ver();
236
237         /* Perform EEPROM-based board detection */
238         do_board_detect();
239
240 #if defined(CONFIG_CPU_V7R) && defined(CONFIG_K3_AVS0)
241         ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(k3_avs),
242                                           &dev);
243         if (ret)
244                 printf("AVS init failed: %d\n", ret);
245 #endif
246
247 #ifdef CONFIG_K3_AM654_DDRSS
248         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
249         if (ret)
250                 panic("DRAM init failed: %d\n", ret);
251 #endif
252         spl_enable_dcache();
253 }
254
255 u32 spl_mmc_boot_mode(const u32 boot_device)
256 {
257 #if defined(CONFIG_SUPPORT_EMMC_BOOT)
258         u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
259
260         u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
261                         CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;
262
263         /* eMMC boot0 mode is only supported for primary boot */
264         if (bootindex == K3_PRIMARY_BOOTMODE &&
265             bootmode == BOOT_DEVICE_MMC1)
266                 return MMCSD_MODE_EMMCBOOT;
267 #endif
268
269         /* Everything else use filesystem if available */
270 #if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
271         return MMCSD_MODE_FS;
272 #else
273         return MMCSD_MODE_RAW;
274 #endif
275 }
276
277 static u32 __get_backup_bootmedia(u32 devstat)
278 {
279         u32 bkup_boot = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
280                         CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;
281
282         switch (bkup_boot) {
283         case BACKUP_BOOT_DEVICE_USB:
284                 return BOOT_DEVICE_USB;
285         case BACKUP_BOOT_DEVICE_UART:
286                 return BOOT_DEVICE_UART;
287         case BACKUP_BOOT_DEVICE_ETHERNET:
288                 return BOOT_DEVICE_ETHERNET;
289         case BACKUP_BOOT_DEVICE_MMC2:
290         {
291                 u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
292                             CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
293                 if (port == 0x0)
294                         return BOOT_DEVICE_MMC1;
295                 return BOOT_DEVICE_MMC2;
296         }
297         case BACKUP_BOOT_DEVICE_SPI:
298                 return BOOT_DEVICE_SPI;
299         case BACKUP_BOOT_DEVICE_HYPERFLASH:
300                 return BOOT_DEVICE_HYPERFLASH;
301         case BACKUP_BOOT_DEVICE_I2C:
302                 return BOOT_DEVICE_I2C;
303         };
304
305         return BOOT_DEVICE_RAM;
306 }
307
308 static u32 __get_primary_bootmedia(u32 devstat)
309 {
310         u32 bootmode = (devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK) >>
311                         CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT;
312
313         if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI)
314                 bootmode = BOOT_DEVICE_SPI;
315
316         if (bootmode == BOOT_DEVICE_MMC2) {
317                 u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK) >>
318                             CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT;
319                 if (port == 0x0)
320                         bootmode = BOOT_DEVICE_MMC1;
321         } else if (bootmode == BOOT_DEVICE_MMC1) {
322                 u32 port = (devstat & CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK) >>
323                             CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT;
324                 if (port == 0x1)
325                         bootmode = BOOT_DEVICE_MMC2;
326         } else if (bootmode == BOOT_DEVICE_DFU) {
327                 u32 mode = (devstat & CTRLMMR_MAIN_DEVSTAT_USB_MODE_MASK) >>
328                             CTRLMMR_MAIN_DEVSTAT_USB_MODE_SHIFT;
329                 if (mode == 0x2)
330                         bootmode = BOOT_DEVICE_USB;
331         }
332
333         return bootmode;
334 }
335
336 u32 spl_boot_device(void)
337 {
338         u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
339
340         if (bootindex == K3_PRIMARY_BOOTMODE)
341                 return __get_primary_bootmedia(devstat);
342         else
343                 return __get_backup_bootmedia(devstat);
344 }
345 #endif
346
347 #ifdef CONFIG_SYS_K3_SPL_ATF
348
349 #define AM6_DEV_MCU_RTI0                        134
350 #define AM6_DEV_MCU_RTI1                        135
351 #define AM6_DEV_MCU_ARMSS0_CPU0                 159
352 #define AM6_DEV_MCU_ARMSS0_CPU1                 245
353
354 void release_resources_for_core_shutdown(void)
355 {
356         struct ti_sci_handle *ti_sci = get_ti_sci_handle();
357         struct ti_sci_dev_ops *dev_ops = &ti_sci->ops.dev_ops;
358         struct ti_sci_proc_ops *proc_ops = &ti_sci->ops.proc_ops;
359         int ret;
360         u32 i;
361
362         const u32 put_device_ids[] = {
363                 AM6_DEV_MCU_RTI0,
364                 AM6_DEV_MCU_RTI1,
365         };
366
367         /* Iterate through list of devices to put (shutdown) */
368         for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
369                 u32 id = put_device_ids[i];
370
371                 ret = dev_ops->put_device(ti_sci, id);
372                 if (ret)
373                         panic("Failed to put device %u (%d)\n", id, ret);
374         }
375
376         const u32 put_core_ids[] = {
377                 AM6_DEV_MCU_ARMSS0_CPU1,
378                 AM6_DEV_MCU_ARMSS0_CPU0,        /* Handle CPU0 after CPU1 */
379         };
380
381         /* Iterate through list of cores to put (shutdown) */
382         for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
383                 u32 id = put_core_ids[i];
384
385                 /*
386                  * Queue up the core shutdown request. Note that this call
387                  * needs to be followed up by an actual invocation of an WFE
388                  * or WFI CPU instruction.
389                  */
390                 ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
391                 if (ret)
392                         panic("Failed sending core %u shutdown message (%d)\n",
393                               id, ret);
394         }
395 }
396 #endif
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