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/arch/cpu.h>
32 #include <asm/arch/sys_proto.h>
33 #include <asm/sizes.h>
34 #include "omap4_mux_data.h"
36 DECLARE_GLOBAL_DATA_PTR;
38 void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
41 struct pad_conf_entry *pad = (struct pad_conf_entry *) array;
43 for (i = 0; i < size; i++, pad++)
44 writew(pad->val, base + pad->offset);
47 static void set_muxconf_regs_essential(void)
49 do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_essential,
50 sizeof(core_padconf_array_essential) /
51 sizeof(struct pad_conf_entry));
53 do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_essential,
54 sizeof(wkup_padconf_array_essential) /
55 sizeof(struct pad_conf_entry));
58 static void set_mux_conf_regs(void)
60 switch (omap4_hw_init_context()) {
61 case OMAP_INIT_CONTEXT_SPL:
62 set_muxconf_regs_essential();
64 case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
65 set_muxconf_regs_non_essential();
67 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
68 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
69 set_muxconf_regs_essential();
70 set_muxconf_regs_non_essential();
77 * Description: Does early system init of watchdog, muxing, andclocks
78 * Watchdog disable is done always. For the rest what gets done
79 * depends on the boot mode in which this function is executed
80 * 1. s_init of SPL running from SRAM
81 * 2. s_init of U-Boot running from FLASH
82 * 3. s_init of U-Boot loaded to SDRAM by SPL
83 * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
84 * Configuration Header feature
85 * Please have a look at the respective functions to see what gets
86 * done in each of these cases
87 * This function is called with SRAM stack.
96 * Routine: wait_for_command_complete
97 * Description: Wait for posting to finish on watchdog
99 void wait_for_command_complete(struct watchdog *wd_base)
103 pending = readl(&wd_base->wwps);
108 * Routine: watchdog_init
109 * Description: Shut down watch dogs
111 void watchdog_init(void)
113 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
115 writel(WD_UNLOCK1, &wd2_base->wspr);
116 wait_for_command_complete(wd2_base);
117 writel(WD_UNLOCK2, &wd2_base->wspr);
122 * This function finds the SDRAM size available in the system
123 * based on DMM section configurations
124 * This is needed because the size of memory installed may be
125 * different on different versions of the board
129 u32 section, i, total_size = 0, size, addr;
130 for (i = 0; i < 4; i++) {
131 section = __raw_readl(DMM_LISA_MAP_BASE + i*4);
132 addr = section & DMM_LISA_MAP_SYS_ADDR_MASK;
133 /* See if the address is valid */
134 if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
135 (addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
136 size = ((section & DMM_LISA_MAP_SYS_SIZE_MASK) >>
137 DMM_LISA_MAP_SYS_SIZE_SHIFT);
149 * Description: sets uboots idea of sdram size
154 gd->ram_size = sdram_size();
160 * Print board information
164 puts(sysinfo.board_string);
169 * This function is called by start_armboot. You can reliably use static
170 * data. Any boot-time function that require static data should be
173 int arch_cpu_init(void)
178 #ifndef CONFIG_SYS_L2CACHE_OFF
179 void v7_outer_cache_enable(void)
181 set_pl310_ctrl_reg(1);
184 void v7_outer_cache_disable(void)
186 set_pl310_ctrl_reg(0);