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:
38 set_muxconf_regs_essential();
40 case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
42 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
43 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
44 set_muxconf_regs_essential();
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;
72 printf("%x ES%x.%x\n", omap_variant, major_rev,
76 #ifdef CONFIG_SPL_BUILD
77 void spl_display_print(void)
83 void __weak srcomp_enable(void)
87 #ifdef CONFIG_ARCH_CPU_INIT
89 * SOC specific cpu init
91 int arch_cpu_init(void)
93 save_omap_boot_params();
96 #endif /* CONFIG_ARCH_CPU_INIT */
100 * Description: Does early system init of watchdog, muxing, andclocks
101 * Watchdog disable is done always. For the rest what gets done
102 * depends on the boot mode in which this function is executed
103 * 1. s_init of SPL running from SRAM
104 * 2. s_init of U-Boot running from FLASH
105 * 3. s_init of U-Boot loaded to SDRAM by SPL
106 * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
107 * Configuration Header feature
108 * Please have a look at the respective functions to see what gets
109 * done in each of these cases
110 * This function is called with SRAM stack.
115 * Save the boot parameters passed from romcode.
116 * We cannot delay the saving further than this,
117 * to prevent overwrites.
119 #ifdef CONFIG_SPL_BUILD
120 save_omap_boot_params();
122 init_omap_revision();
125 #ifdef CONFIG_SPL_BUILD
127 (is_omap44xx() || (omap_revision() == OMAP5430_ES1_0)))
128 force_emif_self_refresh();
132 #ifdef CONFIG_SPL_BUILD
134 setup_clocks_for_console();
138 preloader_console_init();
142 #ifdef CONFIG_SPL_BUILD
143 /* For regular u-boot sdram_init() is called from dram_init() */
149 * Routine: wait_for_command_complete
150 * Description: Wait for posting to finish on watchdog
152 void wait_for_command_complete(struct watchdog *wd_base)
156 pending = readl(&wd_base->wwps);
161 * Routine: watchdog_init
162 * Description: Shut down watch dogs
164 void watchdog_init(void)
166 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
168 writel(WD_UNLOCK1, &wd2_base->wspr);
169 wait_for_command_complete(wd2_base);
170 writel(WD_UNLOCK2, &wd2_base->wspr);
175 * This function finds the SDRAM size available in the system
176 * based on DMM section configurations
177 * This is needed because the size of memory installed may be
178 * different on different versions of the board
180 u32 omap_sdram_size(void)
182 u32 section, i, valid;
183 u64 sdram_start = 0, sdram_end = 0, addr,
184 size, total_size = 0, trap_size = 0, trap_start = 0;
186 for (i = 0; i < 4; i++) {
187 section = __raw_readl(DMM_BASE + i*4);
188 valid = (section & EMIF_SDRC_ADDRSPC_MASK) >>
189 (EMIF_SDRC_ADDRSPC_SHIFT);
190 addr = section & EMIF_SYS_ADDR_MASK;
192 /* See if the address is valid */
193 if ((addr >= TI_ARMV7_DRAM_ADDR_SPACE_START) &&
194 (addr < TI_ARMV7_DRAM_ADDR_SPACE_END)) {
195 size = ((section & EMIF_SYS_SIZE_MASK) >>
196 EMIF_SYS_SIZE_SHIFT);
200 if (valid != DMM_SDRC_ADDR_SPC_INVALID) {
201 if (!sdram_start || (addr < sdram_start))
203 if (!sdram_end || ((addr + size) > sdram_end))
204 sdram_end = addr + size;
212 if ((trap_start >= sdram_start) && (trap_start < sdram_end))
213 total_size = (sdram_end - sdram_start) - (trap_size);
215 total_size = sdram_end - sdram_start;
223 * Description: sets uboots idea of sdram size
228 gd->ram_size = omap_sdram_size();
233 * Print board information
237 puts(sysinfo.board_string);
242 * get_device_type(): tell if GP/HS/EMU/TST
244 u32 get_device_type(void)
246 return (readl((*ctrl)->control_status) &
247 (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
250 #if defined(CONFIG_DISPLAY_CPUINFO)
252 * Print CPU information
254 int print_cpuinfo(void)