1 // SPDX-License-Identifier: GPL-2.0+
4 * Common functions for OMAP4/5 based boards
7 * Texas Instruments, <www.ti.com>
10 * Aneesh V <aneesh@ti.com>
11 * Steve Sakoman <steve@sakoman.com>
14 #include <debug_uart.h>
16 #include <asm/arch/sys_proto.h>
17 #include <linux/sizes.h>
19 #include <asm/omap_common.h>
20 #include <linux/compiler.h>
21 #include <asm/system.h>
23 DECLARE_GLOBAL_DATA_PTR;
25 void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
28 struct pad_conf_entry *pad = (struct pad_conf_entry *) array;
30 for (i = 0; i < size; i++, pad++)
31 writew(pad->val, base + pad->offset);
34 static void set_mux_conf_regs(void)
36 switch (omap_hw_init_context()) {
37 case OMAP_INIT_CONTEXT_SPL:
40 case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
42 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
43 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
54 /* Read Main ID Register (MIDR) */
55 asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev));
60 static void omap_rev_string(void)
62 u32 omap_rev = omap_revision();
63 u32 soc_variant = (omap_rev & 0xF0000000) >> 28;
64 u32 omap_variant = (omap_rev & 0xFFFF0000) >> 16;
65 u32 major_rev = (omap_rev & 0x00000F00) >> 8;
66 u32 minor_rev = (omap_rev & 0x000000F0) >> 4;
68 const char *sec_s, *package = NULL;
70 switch (get_device_type()) {
87 #if defined(CONFIG_DRA7XX)
89 switch (omap_rev & 0xF) {
90 case DRA762_ABZ_PACKAGE:
93 case DRA762_ACD_PACKAGE:
105 printf("%x-%s ES%x.%x", omap_variant, sec_s, major_rev, minor_rev);
107 printf(" %s package\n", package);
112 #ifdef CONFIG_SPL_BUILD
113 void spl_display_print(void)
119 void __weak srcomp_enable(void)
124 * do_board_detect() - Detect board description
126 * Function to detect board description. This is expected to be
127 * overridden in the SoC family board file where desired.
129 void __weak do_board_detect(void)
134 * vcores_init() - Assign omap_vcores based on board
136 * Function to pick the vcores based on board. This is expected to be
137 * overridden in the SoC family board file where desired.
139 void __weak vcores_init(void)
148 * init_package_revision() - Initialize package revision
150 * Function to get the pacakage information. This is expected to be
151 * overridden in the SoC family file where desired.
153 void __weak init_package_revision(void)
158 * early_system_init - Does Early system initialization.
160 * Does early system init of watchdog, muxing, andclocks
161 * Watchdog disable is done always. For the rest what gets done
162 * depends on the boot mode in which this function is executed when
163 * 1. SPL running from SRAM
164 * 2. U-Boot running from FLASH
165 * 3. U-Boot loaded to SDRAM by SPL
166 * 4. U-Boot loaded to SDRAM by ROM code using the
167 * Configuration Header feature
168 * Please have a look at the respective functions to see what gets
169 * done in each of these cases
170 * This function is called with SRAM stack.
172 void early_system_init(void)
174 init_omap_revision();
176 init_package_revision();
178 #ifdef CONFIG_SPL_BUILD
180 force_emif_self_refresh();
184 #ifdef CONFIG_SPL_BUILD
188 setup_early_clocks();
189 #ifdef CONFIG_SPL_BUILD
191 * Save the boot parameters passed from romcode.
192 * We cannot delay the saving further than this,
193 * to prevent overwrites.
195 save_omap_boot_params();
198 #ifdef CONFIG_SPL_BUILD
202 #ifdef CONFIG_DEBUG_UART_OMAP
208 #ifdef CONFIG_SPL_BUILD
209 void board_init_f(ulong dummy)
212 #ifdef CONFIG_BOARD_EARLY_INIT_F
213 board_early_init_f();
215 /* For regular u-boot sdram_init() is called from dram_init() */
217 gd->ram_size = omap_sdram_size();
221 int arch_cpu_init_dm(void)
228 * Routine: wait_for_command_complete
229 * Description: Wait for posting to finish on watchdog
231 void wait_for_command_complete(struct watchdog *wd_base)
235 pending = readl(&wd_base->wwps);
240 * Routine: watchdog_init
241 * Description: Shut down watch dogs
243 void watchdog_init(void)
245 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
247 writel(WD_UNLOCK1, &wd2_base->wspr);
248 wait_for_command_complete(wd2_base);
249 writel(WD_UNLOCK2, &wd2_base->wspr);
254 * This function finds the SDRAM size available in the system
255 * based on DMM section configurations
256 * This is needed because the size of memory installed may be
257 * different on different versions of the board
259 u32 omap_sdram_size(void)
261 u32 section, i, valid;
262 u64 sdram_start = 0, sdram_end = 0, addr,
263 size, total_size = 0, trap_size = 0, trap_start = 0;
265 for (i = 0; i < 4; i++) {
266 section = __raw_readl(DMM_BASE + i*4);
267 valid = (section & EMIF_SDRC_ADDRSPC_MASK) >>
268 (EMIF_SDRC_ADDRSPC_SHIFT);
269 addr = section & EMIF_SYS_ADDR_MASK;
271 /* See if the address is valid */
272 if ((addr >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
273 (addr < TI_ARMV7_DRAM_ADDR_SPACE_END)) {
274 size = ((section & EMIF_SYS_SIZE_MASK) >>
275 EMIF_SYS_SIZE_SHIFT);
279 if (valid != DMM_SDRC_ADDR_SPC_INVALID) {
280 if (!sdram_start || (addr < sdram_start))
282 if (!sdram_end || ((addr + size) > sdram_end))
283 sdram_end = addr + size;
291 if ((trap_start >= sdram_start) && (trap_start < sdram_end))
292 total_size = (sdram_end - sdram_start) - (trap_size);
294 total_size = sdram_end - sdram_start;
302 * Description: sets uboots idea of sdram size
307 gd->ram_size = omap_sdram_size();
312 * Print board information
316 puts(sysinfo.board_string);
320 #if defined(CONFIG_DISPLAY_CPUINFO)
322 * Print CPU information
324 int print_cpuinfo(void)