/**
* @brief The basic entry point for board initialization.
*
* This is called as part of machine init (after arch init).
* This is again called with stack in SRAM, so not too many
* constructs possible here.
*
* @return void
*/
void board_init(void)
{
int in_sdram = running_in_sdram();
mux_config();
/* Dont reconfigure SDRAM while running in SDRAM! */
if (!in_sdram)
sdrc_init();
}
/**
* @brief The basic entry point for board initialization.
*
* This is called as part of machine init (after arch init).
* This is again called with stack in SRAM, so not too many
* constructs possible here.
*
* @return void
*/
static int omap3_evm_board_init(void)
{
int in_sdram = running_in_sdram();
omap3_core_init();
mux_config();
/* Dont reconfigure SDRAM while running in SDRAM! */
if (!in_sdram)
sdrc_init();
return 0;
}
/**********************************************************
* Routine: s_init
* Description: Does early system init of muxing and clocks.
* - Called path is with sram stack.
**********************************************************/
void s_init(void)
{
int in_sdram = running_in_sdram();
watchdog_init();
set_muxconf_regs();
delay(100);
try_unlock_sram();
if(!in_sdram)
prcm_init();
peripheral_enable();
icache_enable();
if (!in_sdram)
sdrc_init();
}
/**********************************************************
* Routine: s_init
* Description: Does early system init of muxing and clocks.
* - Called path is with SRAM stack.
**********************************************************/
void s_init(void)
{
int i;
int external_boot = 0;
int in_sdram = running_in_sdram();
watchdog_init();
external_boot = (get_boot_type() == 0x1F) ? 1 : 0;
/* Right now flushing at low MPU speed. Need to move after clock init */
v7_flush_dcache_all(get_device_type(), external_boot);
try_unlock_memory();
if (cpu_is_3410()) {
/* Lock down 6-ways in L2 cache so that effective size of L2 is 64K */
__asm__ __volatile__("mov %0, #0xFC":"=r" (i));
__asm__ __volatile__("mcr p15, 1, %0, c9, c0, 0":"=r" (i));
}
#ifndef CONFIG_ICACHE_OFF
icache_enable();
#endif
#ifdef CONFIG_L2_OFF
l2cache_disable();
#else
l2cache_enable();
#endif
set_muxconf_regs();
delay(100);
/* Writing to AuxCR in U-boot using SMI for GP/EMU DEV */
/* Currently SMI in Kernel on ES2 devices seems to have an isse
* Once that is resolved, we can postpone this config to kernel
*/
setup_auxcr(get_device_type(), external_boot);
prcm_init();
per_clocks_enable();
}
/**
* @brief The basic entry point for board initialization.
*
* This is called as part of machine init (after arch init).
* This is again called with stack in SRAM, so not too many
* constructs possible here.
*
* @return void
*/
static int beaglebone_board_init(void)
{
int in_sdram = running_in_sdram();
/* WDT1 is already running when the bootloader gets control
* Disable it to avoid "random" resets
*/
__raw_writel(WDT_DISABLE_CODE1, AM33XX_WDT_REG(WSPR));
while(__raw_readl(AM33XX_WDT_REG(WWPS)) != 0x0);
__raw_writel(WDT_DISABLE_CODE2, AM33XX_WDT_REG(WSPR));
while(__raw_readl(AM33XX_WDT_REG(WWPS)) != 0x0);
/* Dont reconfigure SDRAM while running in SDRAM! */
if (!in_sdram)
beaglebone_sram_init();
/* Enable pin mux */
am33xx_enable_uart0_pin_mux();
return 0;
}
/**********************************************************
* Routine: s_init
* Description: Does early system init of muxing and clocks.
* - Called path is with sram stack.
**********************************************************/
void s_init(void)
{
int in_sdram = running_in_sdram();
/* u32 rev = get_cpu_rev(); unused as of now.. */
watchdog_init();
try_unlock_sram(); /* Do SRAM availability first - take care of permissions too */
set_muxconf_regs();
delay(100);
if (!in_sdram){
prcm_init();
}
peripheral_enable();
icache_enable();
if (!in_sdram)
sdrc_init();
}
/******************************************************************************
* Routine: s_init
* Description: Does early system init of muxing and clocks.
* - Called path is with SRAM stack.
*****************************************************************************/
void s_init(void)
{
int in_sdram = running_in_sdram();
watchdog_init();
try_unlock_memory();
/* Right now flushing at low MPU speed.
Need to move after clock init */
v7_flush_dcache_all(get_device_type());
#ifndef CONFIG_ICACHE_OFF
icache_enable();
#endif
#ifdef CONFIG_L2_OFF
l2cache_disable();
#else
l2cache_enable();
#endif
/* Writing to AuxCR in U-boot using SMI for GP DEV */
/* Currently SMI in Kernel on ES2 devices seems to have an isse
* Once that is resolved, we can postpone this config to kernel
*/
if (get_device_type() == GP_DEVICE)
setup_auxcr();
set_muxconf_regs();
delay(100);
prcm_init();
per_clocks_enable();
if (!in_sdram)
sdrc_init();
}
/******************************************************************************
* Routine: try_unlock_sram()
* Description: If chip is GP/EMU(special) type, unlock the SRAM for
* general use.
*****************************************************************************/
void try_unlock_memory()
{
int mode;
int in_sdram = running_in_sdram();
/* if GP device unlock device SRAM for general use */
/* secure code breaks for Secure/Emulation device - HS/E/T */
mode = get_device_type();
if (mode == GP_DEVICE)
secure_unlock_mem();
/* If device is EMU and boot is XIP external booting
* Unlock firewalls and disable L2 and put chip
* out of secure world
*/
/* Assuming memories are unlocked by the demon who put us in SDRAM */
if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
&& (!in_sdram)) {
secure_unlock_mem();
secureworld_exit();
}
return;
}
