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>
37 * Description: Does early system init of muxing and clocks.
38 * - Called path is with SRAM stack.
46 * Routine: wait_for_command_complete
47 * Description: Wait for posting to finish on watchdog
49 void wait_for_command_complete(struct watchdog *wd_base)
53 pending = readl(&wd_base->wwps);
58 * Routine: watchdog_init
59 * Description: Shut down watch dogs
61 void watchdog_init(void)
63 struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
65 writel(WD_UNLOCK1, &wd2_base->wspr);
66 wait_for_command_complete(wd2_base);
67 writel(WD_UNLOCK2, &wd2_base->wspr);
72 * This function finds the SDRAM size available in the system
73 * based on DMM section configurations
74 * This is needed because the size of memory installed may be
75 * different on different versions of the board
79 u32 section, i, total_size = 0, size, addr;
80 for (i = 0; i < 4; i++) {
81 section = __raw_readl(DMM_LISA_MAP_BASE + i*4);
82 addr = section & DMM_LISA_MAP_SYS_ADDR_MASK;
83 /* See if the address is valid */
84 if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
85 (addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
86 size = ((section & DMM_LISA_MAP_SYS_SIZE_MASK) >>
87 DMM_LISA_MAP_SYS_SIZE_SHIFT);
99 * Description: sets uboots idea of sdram size
103 DECLARE_GLOBAL_DATA_PTR;
105 gd->bd->bi_dram[0].start = 0x80000000;
106 gd->bd->bi_dram[0].size = sdram_size();
111 * Print board information
115 puts(sysinfo.board_string);
120 * This function is called by start_armboot. You can reliably use static
121 * data. Any boot-time function that require static data should be
124 int arch_cpu_init(void)