mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
93e3568bd5
DECLARE_GLOBAL_DATA_PTR is currently defined within the scope of function while it is a global pointer. Change the scope of definition to replicate it's global scope. This seems to help gcc 4.5 optimizations as well. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/*
|
|
*
|
|
* Common functions for OMAP4 based boards
|
|
*
|
|
* (C) Copyright 2010
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* Author :
|
|
* Aneesh V <aneesh@ti.com>
|
|
* Steve Sakoman <steve@sakoman.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
#include <common.h>
|
|
#include <asm/arch/cpu.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <asm/sizes.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* Routine: s_init
|
|
* Description: Does early system init of muxing and clocks.
|
|
* - Called path is with SRAM stack.
|
|
*/
|
|
void s_init(void)
|
|
{
|
|
watchdog_init();
|
|
}
|
|
|
|
/*
|
|
* Routine: wait_for_command_complete
|
|
* Description: Wait for posting to finish on watchdog
|
|
*/
|
|
void wait_for_command_complete(struct watchdog *wd_base)
|
|
{
|
|
int pending = 1;
|
|
do {
|
|
pending = readl(&wd_base->wwps);
|
|
} while (pending);
|
|
}
|
|
|
|
/*
|
|
* Routine: watchdog_init
|
|
* Description: Shut down watch dogs
|
|
*/
|
|
void watchdog_init(void)
|
|
{
|
|
struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
|
|
|
|
writel(WD_UNLOCK1, &wd2_base->wspr);
|
|
wait_for_command_complete(wd2_base);
|
|
writel(WD_UNLOCK2, &wd2_base->wspr);
|
|
}
|
|
|
|
|
|
/*
|
|
* This function finds the SDRAM size available in the system
|
|
* based on DMM section configurations
|
|
* This is needed because the size of memory installed may be
|
|
* different on different versions of the board
|
|
*/
|
|
u32 sdram_size(void)
|
|
{
|
|
u32 section, i, total_size = 0, size, addr;
|
|
for (i = 0; i < 4; i++) {
|
|
section = __raw_readl(DMM_LISA_MAP_BASE + i*4);
|
|
addr = section & DMM_LISA_MAP_SYS_ADDR_MASK;
|
|
/* See if the address is valid */
|
|
if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
|
|
(addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
|
|
size = ((section & DMM_LISA_MAP_SYS_SIZE_MASK) >>
|
|
DMM_LISA_MAP_SYS_SIZE_SHIFT);
|
|
size = 1 << size;
|
|
size *= SZ_16M;
|
|
total_size += size;
|
|
}
|
|
}
|
|
return total_size;
|
|
}
|
|
|
|
|
|
/*
|
|
* Routine: dram_init
|
|
* Description: sets uboots idea of sdram size
|
|
*/
|
|
int dram_init(void)
|
|
{
|
|
|
|
gd->ram_size = sdram_size();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Print board information
|
|
*/
|
|
int checkboard(void)
|
|
{
|
|
puts(sysinfo.board_string);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function is called by start_armboot. You can reliably use static
|
|
* data. Any boot-time function that require static data should be
|
|
* called from here
|
|
*/
|
|
int arch_cpu_init(void)
|
|
{
|
|
set_muxconf_regs();
|
|
return 0;
|
|
}
|