3 * Common functions for OMAP4 based boards
6 * Texas Instruments, <www.ti.com>
9 * Aneesh V <aneesh@ti.com>
10 * Steve Sakoman <steve@sakoman.com>
12 * See file CREDITS for list of people who contributed to this
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/armv7.h>
32 #include <asm/arch/cpu.h>
33 #include <asm/arch/sys_proto.h>
34 #include <asm/sizes.h>
35 #include <asm/arch/emif.h>
36 #include <asm/omap_gpio.h>
37 #include "omap4_mux_data.h"
39 DECLARE_GLOBAL_DATA_PTR;
41 u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
43 static const struct gpio_bank gpio_bank_44xx[6] = {
44 { (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
45 { (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
46 { (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
47 { (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
48 { (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
49 { (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
52 const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
54 #ifdef CONFIG_SPL_BUILD
56 * We use static variables because global data is not ready yet.
57 * Initialized data is available in SPL right from the beginning.
58 * We would not typically need to save these parameters in regular
59 * U-Boot. This is needed only in SPL at the moment.
61 u32 omap4_boot_device = BOOT_DEVICE_MMC1;
62 u32 omap4_boot_mode = MMCSD_MODE_FAT;
64 u32 omap_boot_device(void)
66 return omap4_boot_device;
69 u32 omap_boot_mode(void)
71 return omap4_boot_mode;
75 void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
78 struct pad_conf_entry *pad = (struct pad_conf_entry *) array;
80 for (i = 0; i < size; i++, pad++)
81 writew(pad->val, base + pad->offset);
84 static void set_muxconf_regs_essential(void)
86 do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_essential,
87 sizeof(core_padconf_array_essential) /
88 sizeof(struct pad_conf_entry));
90 do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_essential,
91 sizeof(wkup_padconf_array_essential) /
92 sizeof(struct pad_conf_entry));
95 static void set_mux_conf_regs(void)
97 switch (omap4_hw_init_context()) {
98 case OMAP_INIT_CONTEXT_SPL:
99 set_muxconf_regs_essential();
101 case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
102 set_muxconf_regs_non_essential();
104 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
105 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
106 set_muxconf_regs_essential();
107 set_muxconf_regs_non_essential();
112 static u32 cortex_a9_rev(void)
117 /* Read Main ID Register (MIDR) */
118 asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev));
123 static void init_omap4_revision(void)
126 * For some of the ES2/ES1 boards ID_CODE is not reliable:
127 * Also, ES1 and ES2 have different ARM revisions
128 * So use ARM revision for identification
130 unsigned int arm_rev = cortex_a9_rev();
133 case MIDR_CORTEX_A9_R0P1:
134 *omap4_revision = OMAP4430_ES1_0;
136 case MIDR_CORTEX_A9_R1P2:
137 switch (readl(CONTROL_ID_CODE)) {
138 case OMAP4_CONTROL_ID_CODE_ES2_0:
139 *omap4_revision = OMAP4430_ES2_0;
141 case OMAP4_CONTROL_ID_CODE_ES2_1:
142 *omap4_revision = OMAP4430_ES2_1;
144 case OMAP4_CONTROL_ID_CODE_ES2_2:
145 *omap4_revision = OMAP4430_ES2_2;
148 *omap4_revision = OMAP4430_ES2_0;
152 case MIDR_CORTEX_A9_R1P3:
153 *omap4_revision = OMAP4430_ES2_3;
155 case MIDR_CORTEX_A9_R2P10:
156 *omap4_revision = OMAP4460_ES1_0;
159 *omap4_revision = OMAP4430_SILICON_ID_INVALID;
164 void omap_rev_string(char *omap4_rev_string)
166 u32 omap4_rev = omap_revision();
167 u32 omap4_variant = (omap4_rev & 0xFFFF0000) >> 16;
168 u32 major_rev = (omap4_rev & 0x00000F00) >> 8;
169 u32 minor_rev = (omap4_rev & 0x000000F0) >> 4;
171 sprintf(omap4_rev_string, "OMAP%x ES%x.%x", omap4_variant, major_rev,
177 * Description: Does early system init of watchdog, muxing, andclocks
178 * Watchdog disable is done always. For the rest what gets done
179 * depends on the boot mode in which this function is executed
180 * 1. s_init of SPL running from SRAM
181 * 2. s_init of U-Boot running from FLASH
182 * 3. s_init of U-Boot loaded to SDRAM by SPL
183 * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
184 * Configuration Header feature
185 * Please have a look at the respective functions to see what gets
186 * done in each of these cases
187 * This function is called with SRAM stack.
191 init_omap4_revision();
194 #ifdef CONFIG_SPL_BUILD
195 preloader_console_init();
198 #ifdef CONFIG_SPL_BUILD
199 /* For regular u-boot sdram_init() is called from dram_init() */
205 * Routine: wait_for_command_complete
206 * Description: Wait for posting to finish on watchdog
208 void wait_for_command_complete(struct watchdog *wd_base)
212 pending = readl(&wd_base->wwps);
217 * Routine: watchdog_init
218 * Description: Shut down watch dogs
220 void watchdog_init(void)
222 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
224 writel(WD_UNLOCK1, &wd2_base->wspr);
225 wait_for_command_complete(wd2_base);
226 writel(WD_UNLOCK2, &wd2_base->wspr);
231 * This function finds the SDRAM size available in the system
232 * based on DMM section configurations
233 * This is needed because the size of memory installed may be
234 * different on different versions of the board
236 u32 omap4_sdram_size(void)
238 u32 section, i, total_size = 0, size, addr;
239 for (i = 0; i < 4; i++) {
240 section = __raw_readl(OMAP44XX_DMM_LISA_MAP_BASE + i*4);
241 addr = section & OMAP44XX_SYS_ADDR_MASK;
242 /* See if the address is valid */
243 if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
244 (addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
245 size = ((section & OMAP44XX_SYS_SIZE_MASK) >>
246 OMAP44XX_SYS_SIZE_SHIFT);
258 * Description: sets uboots idea of sdram size
263 gd->ram_size = omap4_sdram_size();
269 * Print board information
273 puts(sysinfo.board_string);
278 * This function is called by start_armboot. You can reliably use static
279 * data. Any boot-time function that require static data should be
282 int arch_cpu_init(void)
287 #ifndef CONFIG_SYS_L2CACHE_OFF
288 void v7_outer_cache_enable(void)
290 set_pl310_ctrl_reg(1);
293 void v7_outer_cache_disable(void)
295 set_pl310_ctrl_reg(0);