3 * Common functions for OMAP4/5 based boards
6 * Texas Instruments, <www.ti.com>
9 * Aneesh V <aneesh@ti.com>
10 * Steve Sakoman <steve@sakoman.com>
12 * SPDX-License-Identifier: GPL-2.0+
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;
70 switch (get_device_type()) {
91 printf("%x-%s ES%x.%x\n", omap_variant, sec_s, major_rev, minor_rev);
94 #ifdef CONFIG_SPL_BUILD
95 void spl_display_print(void)
101 void __weak srcomp_enable(void)
106 * do_board_detect() - Detect board description
108 * Function to detect board description. This is expected to be
109 * overridden in the SoC family board file where desired.
111 void __weak do_board_detect(void)
116 * vcores_init() - Assign omap_vcores based on board
118 * Function to pick the vcores based on board. This is expected to be
119 * overridden in the SoC family board file where desired.
121 void __weak vcores_init(void)
130 * early_system_init - Does Early system initialization.
132 * Does early system init of watchdog, muxing, andclocks
133 * Watchdog disable is done always. For the rest what gets done
134 * depends on the boot mode in which this function is executed when
135 * 1. SPL running from SRAM
136 * 2. U-Boot running from FLASH
137 * 3. U-Boot loaded to SDRAM by SPL
138 * 4. U-Boot loaded to SDRAM by ROM code using the
139 * Configuration Header feature
140 * Please have a look at the respective functions to see what gets
141 * done in each of these cases
142 * This function is called with SRAM stack.
144 void early_system_init(void)
146 init_omap_revision();
149 #ifdef CONFIG_SPL_BUILD
151 force_emif_self_refresh();
155 #ifdef CONFIG_SPL_BUILD
159 setup_early_clocks();
165 #ifdef CONFIG_SPL_BUILD
166 void board_init_f(ulong dummy)
169 #ifdef CONFIG_BOARD_EARLY_INIT_F
170 board_early_init_f();
172 /* For regular u-boot sdram_init() is called from dram_init() */
177 int arch_cpu_init_dm(void)
184 * Routine: wait_for_command_complete
185 * Description: Wait for posting to finish on watchdog
187 void wait_for_command_complete(struct watchdog *wd_base)
191 pending = readl(&wd_base->wwps);
196 * Routine: watchdog_init
197 * Description: Shut down watch dogs
199 void watchdog_init(void)
201 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
203 writel(WD_UNLOCK1, &wd2_base->wspr);
204 wait_for_command_complete(wd2_base);
205 writel(WD_UNLOCK2, &wd2_base->wspr);
210 * This function finds the SDRAM size available in the system
211 * based on DMM section configurations
212 * This is needed because the size of memory installed may be
213 * different on different versions of the board
215 u32 omap_sdram_size(void)
217 u32 section, i, valid;
218 u64 sdram_start = 0, sdram_end = 0, addr,
219 size, total_size = 0, trap_size = 0, trap_start = 0;
221 for (i = 0; i < 4; i++) {
222 section = __raw_readl(DMM_BASE + i*4);
223 valid = (section & EMIF_SDRC_ADDRSPC_MASK) >>
224 (EMIF_SDRC_ADDRSPC_SHIFT);
225 addr = section & EMIF_SYS_ADDR_MASK;
227 /* See if the address is valid */
228 if ((addr >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
229 (addr < TI_ARMV7_DRAM_ADDR_SPACE_END)) {
230 size = ((section & EMIF_SYS_SIZE_MASK) >>
231 EMIF_SYS_SIZE_SHIFT);
235 if (valid != DMM_SDRC_ADDR_SPC_INVALID) {
236 if (!sdram_start || (addr < sdram_start))
238 if (!sdram_end || ((addr + size) > sdram_end))
239 sdram_end = addr + size;
247 if ((trap_start >= sdram_start) && (trap_start < sdram_end))
248 total_size = (sdram_end - sdram_start) - (trap_size);
250 total_size = sdram_end - sdram_start;
258 * Description: sets uboots idea of sdram size
263 gd->ram_size = omap_sdram_size();
268 * Print board information
272 puts(sysinfo.board_string);
277 * get_device_type(): tell if GP/HS/EMU/TST
279 u32 get_device_type(void)
281 return (readl((*ctrl)->control_status) &
282 (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
285 #if defined(CONFIG_DISPLAY_CPUINFO)
287 * Print CPU information
289 int print_cpuinfo(void)