1 // SPDX-License-Identifier: GPL-2.0+
5 * (C) Copyright 2007-2011
6 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
9 * Some init for sunxi platform.
19 #include <sunxi_gpio.h>
20 #include <asm/cache.h>
23 #include <asm/arch/clock.h>
24 #include <asm/arch/spl.h>
25 #include <asm/arch/sys_proto.h>
26 #include <asm/arch/timer.h>
27 #include <asm/arch/tzpc.h>
28 #include <asm/arch/mmc.h>
30 #include <linux/compiler.h>
40 struct fel_stash fel_stash __section(".data");
43 #include <asm/armv8/mmu.h>
45 static struct mm_region sunxi_mem_map[] = {
47 /* SRAM, MMIO regions */
51 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
57 .size = CONFIG_SUNXI_DRAM_MAX_SIZE,
58 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
65 struct mm_region *mem_map = sunxi_mem_map;
67 phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
69 /* Some devices (like the EMAC) have a 32-bit DMA limit. */
70 if (gd->ram_top > (1ULL << 32))
75 #endif /* CONFIG_ARM64 */
77 #ifdef CONFIG_XPL_BUILD
78 static int gpio_init(void)
80 __maybe_unused uint val;
81 #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F)
82 #if defined(CONFIG_MACH_SUN4I) || \
83 defined(CONFIG_MACH_SUN7I) || \
84 defined(CONFIG_MACH_SUN8I_R40)
85 /* disable GPB22,23 as uart0 tx,rx to avoid conflict */
86 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT);
87 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT);
89 #if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || \
90 defined(CONFIG_MACH_SUN7I) || defined(CONFIG_MACH_SUN8I_R40) || \
91 defined(CONFIG_MACH_SUN9I)
92 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0);
93 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0);
95 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0);
96 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0);
98 sunxi_gpio_set_pull(SUNXI_GPF(4), SUNXI_GPIO_PULL_UP);
99 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNIV)
100 sunxi_gpio_set_cfgpin(SUNXI_GPE(0), SUNIV_GPE_UART0);
101 sunxi_gpio_set_cfgpin(SUNXI_GPE(1), SUNIV_GPE_UART0);
102 sunxi_gpio_set_pull(SUNXI_GPE(1), SUNXI_GPIO_PULL_UP);
103 #elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || \
104 defined(CONFIG_MACH_SUN7I) || \
105 defined(CONFIG_MACH_SUN8I_R40))
106 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0);
107 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0);
108 sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP);
109 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I)
110 sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0);
111 sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0);
112 sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP);
113 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I)
114 sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0);
115 sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0);
116 sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP);
117 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33)
118 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0);
119 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0);
120 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
121 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNXI_H3_H5)
122 sunxi_gpio_set_cfgpin(SUNXI_GPA(4), SUN8I_H3_GPA_UART0);
123 sunxi_gpio_set_cfgpin(SUNXI_GPA(5), SUN8I_H3_GPA_UART0);
124 sunxi_gpio_set_pull(SUNXI_GPA(5), SUNXI_GPIO_PULL_UP);
125 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I)
126 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN50I_GPB_UART0);
127 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN50I_GPB_UART0);
128 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP);
129 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I_H6)
130 sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_H6_GPH_UART0);
131 sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_H6_GPH_UART0);
132 sunxi_gpio_set_pull(SUNXI_GPH(1), SUNXI_GPIO_PULL_UP);
133 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I_H616)
134 sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_H616_GPH_UART0);
135 sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_H616_GPH_UART0);
136 sunxi_gpio_set_pull(SUNXI_GPH(1), SUNXI_GPIO_PULL_UP);
137 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T)
138 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0);
139 sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0);
140 sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP);
141 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_V3S)
142 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN8I_V3S_GPB_UART0);
143 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_V3S_GPB_UART0);
144 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP);
145 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I)
146 sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0);
147 sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0);
148 sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP);
149 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_R528)
150 sunxi_gpio_set_cfgpin(SUNXI_GPE(2), 6);
151 sunxi_gpio_set_cfgpin(SUNXI_GPE(3), 6);
152 sunxi_gpio_set_pull(SUNXI_GPE(3), SUNXI_GPIO_PULL_UP);
153 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUNIV)
154 sunxi_gpio_set_cfgpin(SUNXI_GPA(2), SUNIV_GPE_UART0);
155 sunxi_gpio_set_cfgpin(SUNXI_GPA(3), SUNIV_GPE_UART0);
156 sunxi_gpio_set_pull(SUNXI_GPA(3), SUNXI_GPIO_PULL_UP);
157 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
158 sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1);
159 sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1);
160 sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP);
161 #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I_H3)
162 sunxi_gpio_set_cfgpin(SUNXI_GPA(0), SUN8I_H3_GPA_UART2);
163 sunxi_gpio_set_cfgpin(SUNXI_GPA(1), SUN8I_H3_GPA_UART2);
164 sunxi_gpio_set_pull(SUNXI_GPA(1), SUNXI_GPIO_PULL_UP);
165 #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I)
166 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2);
167 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2);
168 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
169 #elif CONFIG_CONS_INDEX == 4 && defined(CONFIG_MACH_SUN8I_R528)
170 sunxi_gpio_set_cfgpin(SUNXI_GPB(6), 7);
171 sunxi_gpio_set_cfgpin(SUNXI_GPB(7), 7);
172 sunxi_gpio_set_pull(SUNXI_GPB(7), SUNXI_GPIO_PULL_UP);
173 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
174 sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
175 sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
176 sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
177 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN8I) && \
178 !defined(CONFIG_MACH_SUN8I_R40)
179 sunxi_gpio_set_cfgpin(SUNXI_GPG(6), SUN8I_GPG_UART1);
180 sunxi_gpio_set_cfgpin(SUNXI_GPG(7), SUN8I_GPG_UART1);
181 sunxi_gpio_set_pull(SUNXI_GPG(7), SUNXI_GPIO_PULL_UP);
183 #error Unsupported console port number. Please fix pin mux settings in board.c
187 * Update PIO power bias configuration by copying the hardware
190 if (IS_ENABLED(CONFIG_SUN50I_GEN_H6) ||
191 IS_ENABLED(CONFIG_SUN50I_GEN_NCAT2)) {
192 val = readl(SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
193 writel(val, SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
195 if (IS_ENABLED(CONFIG_SUN50I_GEN_H6)) {
196 val = readl(SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
197 writel(val, SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
203 static int spl_board_load_image(struct spl_image_info *spl_image,
204 struct spl_boot_device *bootdev)
206 debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
207 return_to_fel(fel_stash.sp, fel_stash.lr);
211 SPL_LOAD_IMAGE_METHOD("FEL", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
212 #endif /* CONFIG_XPL_BUILD */
214 #define SUNXI_INVALID_BOOT_SOURCE -1
216 static int suniv_get_boot_source(void)
218 /* Get the last function call from BootROM's stack. */
219 u32 brom_call = *(u32 *)(uintptr_t)(fel_stash.sp - 4);
221 /* translate SUNIV BootROM stack to standard SUNXI boot sources */
223 case SUNIV_BOOTED_FROM_MMC0:
224 return SUNXI_BOOTED_FROM_MMC0;
225 case SUNIV_BOOTED_FROM_SPI:
226 return SUNXI_BOOTED_FROM_SPI;
227 case SUNIV_BOOTED_FROM_MMC1:
228 return SUNXI_BOOTED_FROM_MMC2;
229 /* SPI NAND is not supported yet. */
230 case SUNIV_BOOTED_FROM_NAND:
231 return SUNXI_INVALID_BOOT_SOURCE;
233 /* If we get here something went wrong try to boot from FEL.*/
234 printf("Unknown boot source from BROM: 0x%x\n", brom_call);
235 return SUNXI_INVALID_BOOT_SOURCE;
238 static int sunxi_egon_valid(struct boot_file_head *egon_head)
240 return !memcmp(egon_head->magic, BOOT0_MAGIC, 8); /* eGON.BT0 */
243 static int sunxi_toc0_valid(struct toc0_main_info *toc0_info)
245 return !memcmp(toc0_info->name, TOC0_MAIN_INFO_NAME, 8); /* TOC0.GLH */
248 static int sunxi_get_boot_source(void)
250 struct boot_file_head *egon_head = (void *)SPL_ADDR;
251 struct toc0_main_info *toc0_info = (void *)SPL_ADDR;
254 * On the ARMv5 SoCs, the SPL header in SRAM is overwritten by the
255 * exception vectors in U-Boot proper, so we won't find any
256 * information there. Also the FEL stash is only valid in the SPL,
257 * so we can't use that either. So if this is called from U-Boot
258 * proper, just return MMC0 as a placeholder, for now.
260 if (IS_ENABLED(CONFIG_MACH_SUNIV) &&
261 !IS_ENABLED(CONFIG_XPL_BUILD))
262 return SUNXI_BOOTED_FROM_MMC0;
264 if (IS_ENABLED(CONFIG_MACH_SUNIV))
265 return suniv_get_boot_source();
266 if (sunxi_egon_valid(egon_head))
267 return readb(&egon_head->boot_media);
268 if (sunxi_toc0_valid(toc0_info))
269 return readb(&toc0_info->platform[0]);
271 /* Not a valid image, so we must have been booted via FEL. */
272 return SUNXI_INVALID_BOOT_SOURCE;
275 /* The sunxi internal brom will try to loader external bootloader
276 * from mmc0, nand flash, mmc2.
278 uint32_t sunxi_get_boot_device(void)
280 int boot_source = sunxi_get_boot_source();
283 * When booting from the SD card or NAND memory, the "eGON.BT0"
284 * signature is expected to be found in memory at the address 0x0004
285 * (see the "mksunxiboot" tool, which generates this header).
287 * When booting in the FEL mode over USB, this signature is patched in
288 * memory and replaced with something else by the 'fel' tool. This other
289 * signature is selected in such a way, that it can't be present in a
290 * valid bootable SD card image (because the BROM would refuse to
291 * execute the SPL in this case).
293 * This checks for the signature and if it is not found returns to
294 * the FEL code in the BROM to wait and receive the main u-boot
295 * binary over USB. If it is found, it determines where SPL was
298 switch (boot_source) {
299 case SUNXI_INVALID_BOOT_SOURCE:
300 return BOOT_DEVICE_BOARD;
301 case SUNXI_BOOTED_FROM_MMC0:
302 case SUNXI_BOOTED_FROM_MMC0_HIGH:
303 return BOOT_DEVICE_MMC1;
304 case SUNXI_BOOTED_FROM_NAND:
305 return BOOT_DEVICE_NAND;
306 case SUNXI_BOOTED_FROM_MMC2:
307 case SUNXI_BOOTED_FROM_MMC2_HIGH:
308 return BOOT_DEVICE_MMC2;
309 case SUNXI_BOOTED_FROM_SPI:
310 return BOOT_DEVICE_SPI;
313 panic("Unknown boot source %d\n", boot_source);
314 return -1; /* Never reached */
317 #ifdef CONFIG_XPL_BUILD
318 uint32_t sunxi_get_spl_size(void)
320 struct boot_file_head *egon_head = (void *)SPL_ADDR;
321 struct toc0_main_info *toc0_info = (void *)SPL_ADDR;
323 if (sunxi_egon_valid(egon_head))
324 return readl(&egon_head->length);
325 if (sunxi_toc0_valid(toc0_info))
326 return readl(&toc0_info->length);
328 /* Not a valid image, so use the default U-Boot offset. */
333 * The eGON SPL image can be located at 8KB or at 128KB into an SD card or
334 * an eMMC device. The boot source has bit 4 set in the latter case.
335 * By adding 120KB to the normal offset when booting from a "high" location
336 * we can support both cases. The H616 has the alternative location
337 * moved up to 256 KB instead of 128KB, so cater for that, too.
338 * Also U-Boot proper is located at least 32KB after the SPL, but will
339 * immediately follow the SPL if that is bigger than that.
341 unsigned long board_spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
342 unsigned long raw_sect)
344 unsigned long spl_size = sunxi_get_spl_size();
345 unsigned long sector;
347 sector = max(raw_sect, spl_size / 512);
349 switch (sunxi_get_boot_source()) {
350 case SUNXI_BOOTED_FROM_MMC0_HIGH:
351 case SUNXI_BOOTED_FROM_MMC2_HIGH:
352 sector += (128 - 8) * 2;
353 if (IS_ENABLED(CONFIG_MACH_SUN50I_H616))
361 u32 spl_boot_device(void)
363 return sunxi_get_boot_device();
366 __weak void sunxi_sram_init(void)
371 * When booting from an eMMC boot partition, the SPL puts the same boot
372 * source code into SRAM A1 as when loading the SPL from the normal
373 * eMMC user data partition: 0x2. So to know where we have been loaded
374 * from, we repeat the BROM algorithm here: checking for a valid eGON boot
375 * image at offset 0 of a (potentially) selected boot partition.
376 * If any of the conditions is not met, it must have been the eMMC user
379 static bool sunxi_valid_emmc_boot(struct mmc *mmc)
381 struct blk_desc *bd = mmc_get_blk_desc(mmc);
382 u32 *buffer = (void *)(uintptr_t)CONFIG_TEXT_BASE;
383 struct boot_file_head *egon_head = (void *)buffer;
384 struct toc0_main_info *toc0_info = (void *)buffer;
385 int bootpart = EXT_CSD_EXTRACT_BOOT_PART(mmc->part_config);
386 uint32_t spl_size, emmc_checksum, chksum = 0;
389 /* The BROM requires BOOT_ACK to be enabled. */
390 if (!EXT_CSD_EXTRACT_BOOT_ACK(mmc->part_config))
394 * The BOOT_BUS_CONDITION register must be 4-bit SDR, with (0x09)
395 * or without (0x01) high speed timings.
397 if ((mmc->ext_csd[EXT_CSD_BOOT_BUS_WIDTH] & 0x1b) != 0x01 &&
398 (mmc->ext_csd[EXT_CSD_BOOT_BUS_WIDTH] & 0x1b) != 0x09)
401 /* Partition 0 is the user data partition, bootpart must be 1 or 2. */
402 if (bootpart != EMMC_BOOT_PART_BOOT1 && bootpart != EMMC_BOOT_PART_BOOT2)
405 /* Failure to switch to the boot partition is fatal. */
406 if (mmc_switch_part(mmc, bootpart))
409 /* Read the first block to do some sanity checks on the eGON header. */
410 count = blk_dread(bd, 0, 1, buffer);
414 if (sunxi_egon_valid(egon_head))
415 spl_size = egon_head->length;
416 else if (sunxi_toc0_valid(toc0_info))
417 spl_size = toc0_info->length;
421 /* Read the rest of the SPL now we know it's halfway sane. */
422 count = blk_dread(bd, 1, DIV_ROUND_UP(spl_size, bd->blksz) - 1,
423 buffer + bd->blksz / 4);
425 /* Save the checksum and replace it with the "stamp value". */
426 emmc_checksum = buffer[3];
427 buffer[3] = 0x5f0a6c39;
429 /* The checksum is a simple ignore-carry addition of all words. */
430 for (count = 0; count < spl_size / 4; count++)
431 chksum += buffer[count];
433 debug("eMMC boot part SPL checksum: stored: 0x%08x, computed: 0x%08x\n",
434 emmc_checksum, chksum);
436 return emmc_checksum == chksum;
439 u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
441 static u32 result = ~0;
446 result = MMCSD_MODE_RAW;
447 if (!IS_SD(mmc) && IS_ENABLED(CONFIG_SUPPORT_EMMC_BOOT)) {
448 if (sunxi_valid_emmc_boot(mmc))
449 result = MMCSD_MODE_EMMCBOOT;
451 mmc_switch_part(mmc, 0);
454 debug("%s(): %s part\n", __func__,
455 result == MMCSD_MODE_RAW ? "user" : "boot");
460 void board_init_f(ulong dummy)
464 /* Enable non-secure access to some peripherals */
472 preloader_console_init();
474 #if CONFIG_IS_ENABLED(I2C) && CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
475 /* Needed early by sunxi_board_init if PMU is enabled */
477 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
481 #endif /* CONFIG_XPL_BUILD */
483 #if !CONFIG_IS_ENABLED(SYSRESET)
486 #if defined(CONFIG_SUNXI_GEN_SUN4I) || defined(CONFIG_MACH_SUN8I_R40)
487 static const struct sunxi_wdog *wdog =
488 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
490 /* Set the watchdog for its shortest interval (.5s) and wait */
491 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
492 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
495 /* sun5i sometimes gets stuck without this */
496 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
498 #elif defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_SUN50I_GEN_H6) || defined(CONFIG_SUNXI_GEN_NCAT2)
499 #if defined(CONFIG_MACH_SUN50I_H6)
500 /* WDOG is broken for some H6 rev. use the R_WDOG instead */
501 static const struct sunxi_wdog *wdog =
502 (struct sunxi_wdog *)SUNXI_R_WDOG_BASE;
504 static const struct sunxi_wdog *wdog =
505 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
507 /* Set the watchdog for its shortest interval (.5s) and wait */
508 writel(WDT_CFG_RESET, &wdog->cfg);
509 writel(WDT_MODE_EN, &wdog->mode);
510 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
514 #endif /* CONFIG_SYSRESET */
516 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && defined(CONFIG_CPU_V7A)
517 void enable_caches(void)
519 /* Enable D-cache. I-cache is already enabled in start.S */