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nest-open-source / nest-learning-thermostat / 5.1.5 / x-loader / 53d01985483950d55523b9832f83fc7a918c869e / . / x-loader / board / omap2430sdp / omap2430sdp.c
blob: f2a7b4241984d5efd2a22f1d269fb221748a3208 [file] [log] [blame]
/*
* (C) Copyright 2004-2005
* Texas Instruments, <www.ti.com>
* Jian Zhang <jzhang@ti.com>
* Richard Woodruff <r-woodruff2@ti.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/omap2430.h>
#include <asm/arch/bits.h>
#include <asm/arch/mem.h>
#include <asm/arch/sys_info.h>
#include <asm/arch/clocks.h>
static void wait_for_command_complete(unsigned int wd_base);
static void watchdog_init(void);
static void peripheral_enable(void);
static void muxSetupAll(void);
static u32 get_cpu_rev(void);
static u32 get_device_type(void);
static void prcm_init(void);
/*******************************************************
* Routine: delay
* Description: spinning delay to use before udelay works
******************************************************/
static inline void delay (unsigned long loops)
{
__asm__ volatile ("1:\n"
"subs %0, %1, #1\n"
"bne 1b":"=r" (loops):"0" (loops));
}
/*****************************************
* Routine: board_init
* Description: Early hardware init.
*****************************************/
int board_init (void)
{
return 0;
}
/******************************************
* get_cpu_rev(void) - extract version info
******************************************/
u32 get_cpu_rev(void)
{
u32 v;
v = __raw_readl(TAP_IDCODE_REG);
v = v >> 28;
return(v+1); /* currently 2422 and 2420 match up */
}
/*************************************************************
* get_device_type(): tell if GP/HS/EMU/TST
*************************************************************/
u32 get_device_type(void)
{
int mode;
mode = __raw_readl(CONTROL_STATUS) & (DEVICE_MASK);
return(mode >>= 8);
}
/*************************************************************
* Helper function to wait for the status of a register
*************************************************************/
u32 wait_on_value(u32 read_bit_mask, u32 match_value, u32 read_addr, u32 bound)
{
u32 i = 0, val;
do {
++i;
val = __raw_readl(read_addr) & read_bit_mask;
if (val == match_value)
return(1);
if (i==bound)
return(0);
} while (1);
}
/*************************************************************
* Support for multiple type of memory types
*************************************************************/
#ifdef CFG_SDRAM_DDR
void
config_sdram_ddr(u32 rev)
{
/* ball D11, mode 0 */
__raw_writeb(0x08, 0x48000032);
/* SDRC_CS0 Configuration */
__raw_writel(H4_2420_SDRC_MDCFG_0_DDR, SDRC_MCFG_0);
__raw_writel(H4_2420_SDRC_SHARING, SDRC_SHARING);
__raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, SDRC_RFR_CTRL);
__raw_writel(H4_242x_SDRC_ACTIM_CTRLA_0_ES1, SDRC_ACTIM_CTRLA_0);
__raw_writel(H4_242x_SDRC_ACTIM_CTRLB_0_ES1, SDRC_ACTIM_CTRLB_0);
/* Manual Command sequence */
__raw_writel(CMD_NOP, SDRC_MANUAL_0);
__raw_writel(CMD_PRECHARGE, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
/*
* CS0 SDRC Mode Register
* Burst length = 4 - DDR memory
* Serial mode
* CAS latency = 3
*/
__raw_writel(0x00000032, SDRC_MR_0);
/* SDRC DLLA control register */
/* Delay is 90 degrees */
/* Enable DLL, Load counter with 115 (middle of range) */
__raw_writel(0x00000008, SDRC_DLLA_CTRL); // ES2.x
/* Enable DLL, Load counter with 128 (middle of range) */
__raw_writel(0x00000008, SDRC_DLLB_CTRL); // ES2.x
}
#endif // CFG_SDRAM_DDR
#ifdef CFG_SDRAM_COMBO
void
config_sdram_combo(u32 rev)
{
u32 dllctrl=0;
/* ball C12, mode 0 */
__raw_writeb(0x00, 0x480000a1);
/* ball D11, mode 0 */
__raw_writeb(0x00, 0x48000032);
/* ball B13, mode 0 - for CKE1 (not needed rkw for combo) */
__raw_writeb(0x00, 0x480000a3);
/*configure sdrc 32 bit for COMBO ddr sdram. Issue soft reset */
__raw_writel(0x00000012, SDRC_SYSCONFIG);
wait_on_value(BIT0, BIT0, SDRC_STATUS, 12000000); /* wait till reset done set */
__raw_writel(0x00000000, SDRC_SYSCONFIG);
/* SDRCTriState: no Tris */
/* CS0MuxCfg: 000 (32-bit SDRAM on D31..0) */
if (rev == CPU_2420_2422_ES1)
__raw_writel(H4_2422_SDRC_SHARING, SDRC_SHARING);
else
__raw_writel(H4_2420_SDRC_SHARING, SDRC_SHARING);
/* CS0 SDRC Memory Configuration, */
/* DDR-SDRAM, External SDRAM is x32bit, */
/* Configure to MUX9: 1x8Mbx32 */
__raw_writel(H4_2420_COMBO_MDCFG_0_DDR, SDRC_MCFG_0);
__raw_writel(H4_2420_SDRC_ACTIM_CTRLA_0, SDRC_ACTIM_CTRLA_0);
__raw_writel(H4_2420_SDRC_ACTIM_CTRLB_0, SDRC_ACTIM_CTRLB_0);
/* This is reqd only for ES1 */
if (rev == CPU_242X_ES1)
__raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, SDRC_RFR_CTRL);
/* Manual Command sequence */
__raw_writel(CMD_NOP, SDRC_MANUAL_0);
delay(5000);
__raw_writel(CMD_PRECHARGE, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
/* CS0 SDRC Mode Register */
/* Burst length = 4 - DDR memory */
/* Serial mode */
/* CAS latency = 3 */
__raw_writel(H4_2422_SDRC_MR_0_DDR, SDRC_MR_0);
/* CS1 SDRC Memory Configuration, */
/* DDR-SDRAM, External SDRAM is x32bit, */
/* Configure to MUX9: 1x8Mbx32 */
__raw_writel(H4_2420_COMBO_MDCFG_0_DDR, SDRC_MCFG_1);
__raw_writel(H4_242X_SDRC_ACTIM_CTRLA_0_100MHz, SDRC_ACTIM_CTRLA_1);
__raw_writel(H4_2420_SDRC_ACTIM_CTRLB_0, SDRC_ACTIM_CTRLB_1);
/* This is reqd only for ES1 */
if (rev == CPU_242X_ES1)
__raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, 0x680090d4);
/* Manual Command sequence */
__raw_writel(CMD_NOP, 0x680090d8);
__raw_writel(CMD_PRECHARGE, 0x680090d8);
__raw_writel(CMD_AUTOREFRESH, 0x680090d8);
__raw_writel(CMD_AUTOREFRESH, 0x680090d8);
/* CS1 SDRC Mode Register */
/* Burst length = 4 - DDR memory */
/* Serial mode */
/* CAS latency = 3 */
__raw_writel(H4_2422_SDRC_MR_0_DDR, 0x680090b4);
/* SDRC DLLA control register */
/* Delay is 90 degrees */
if (rev == CPU_242X_ES1)
dllctrl = (BIT0|BIT3);
else
dllctrl = BIT0;
if (rev == CPU_2420_2422_ES1) {
/* Enable DLL, Load counter with 115 (middle of range) */
__raw_writel(0x00007306, SDRC_DLLA_CTRL);
__raw_writel(0x00007302, SDRC_DLLA_CTRL);
/* Enable DLL, Load counter with 128 (middle of range) */
__raw_writel(0x00007306, SDRC_DLLB_CTRL); /* load ctr value */
__raw_writel(0x00007302, SDRC_DLLB_CTRL); /* lock and go */
}
else {
/* Enable DLL, Load counter with 115 (middle of range) */
__raw_writel(H4_2420_SDRC_DLLAB_CTRL, SDRC_DLLA_CTRL); // ES2.x
__raw_writel(H4_2420_SDRC_DLLAB_CTRL & ~(LOADDLL|dllctrl), SDRC_DLLA_CTRL); // ES2.x
// __raw_writel(0x00009808, SDRC_DLLA_CTRL); // ES2.x
/* Enable DLL, Load counter with 128 (middle of range) */
__raw_writel(H4_2420_SDRC_DLLAB_CTRL, SDRC_DLLB_CTRL); // ES2.x ?
__raw_writel(H4_2420_SDRC_DLLAB_CTRL & ~(LOADDLL|dllctrl), SDRC_DLLB_CTRL); // ES2.x
//__raw_writel(0x00009808, SDRC_DLLB_CTRL); // ES2.x
}
}
#endif // CFG_SDRAM_COMBO
#ifdef CFG_2430SDRAM_DDR
void
config_2430sdram_ddr(u32 rev)
{
u32 dllstat, dllctrl;
__raw_writel(0x00000012, SDRC_SYSCONFIG);
wait_on_value(BIT0, BIT0, SDRC_STATUS, 12000000); /* wait till reset done set */
__raw_writel(0x00000000, SDRC_SYSCONFIG);
/* Chip-level shared interface management */
/* SDRCTriState: no Tris */
/* CS0MuxCfg: 000 (32-bit SDRAM on D31..0) */
/* CS1MuxCfg: 000 (32-bit SDRAM on D31..0) */
__raw_writel(H4_2420_SDRC_SHARING, SDRC_SHARING);
/* CS0 SDRC Memory Configuration, */
/* DDR-SDRAM, External SDRAM is x32bit, */
/* Configure to MUX14: 32Mbx32 */
__raw_writel(SDP_2430_SDRC_MDCFG_0_DDR, SDRC_MCFG_0);
__raw_writel(SDP_2430_SDRC_ACTIM_CTRLA_0, SDRC_ACTIM_CTRLA_0);
__raw_writel(H4_2420_SDRC_ACTIM_CTRLB_0, SDRC_ACTIM_CTRLB_0);
__raw_writel(H4_2420_SDRC_RFR_CTRL, SDRC_RFR_CTRL);
/* Manual Command sequence */
__raw_writel(CMD_NOP, SDRC_MANUAL_0);
delay(5000);
__raw_writel(CMD_PRECHARGE, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
__raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_0);
/* CS0 SDRC Mode Register */
/* Burst length = 2 - SDR memory */
/* Serial mode */
/* CAS latency = 3 */
__raw_writel(H4_2420_SDRC_MR_0_DDR, SDRC_MR_0);
/* Set up SDRC DLL values for 2430 DDR */
dllctrl = (SDP_2430_SDRC_DLLAB_CTRL & ~BIT2); /* set target ctrl val */
__raw_writel(dllctrl, SDRC_DLLA_CTRL); /* set lock mode */
__raw_writel(dllctrl, SDRC_DLLB_CTRL); /* set lock mode */
delay(0x1000); /* time to track to center */
dllstat = __raw_readl(SDRC_DLLA_STATUS) & 0xFF00; /* get status */
dllctrl = (dllctrl & 0x00FF) | dllstat | BIT2; /* build unlock value */
__raw_writel(dllctrl, SDRC_DLLA_CTRL); /* set unlock mode */
__raw_writel(dllctrl, SDRC_DLLB_CTRL); /* set unlock mode */
}
#endif // CFG_2430SDRAM_DDR
#ifdef CFG_SDRAM_STACKED
void
config_sdram_stacked(u32 rev)
{
/* Pin Muxing for SDRC */
__raw_writeb(0x00, 0x480000a1); /* mux mode 0 (CS1) */
__raw_writeb(0x00, 0x480000a3); /* mux mode 0 (CKE1) */
__raw_writeb(0x00, 0x48000032); /* connect sdrc_a12 */
__raw_writeb(0x00, 0x48000031); /* connect sdrc_a13 */
/* configure sdrc 32 bit for COMBO ddr sdram */
__raw_writel(0x00000010, SDRC_SYSCONFIG); /* no idle ack and RESET enable */
delay(200000);
__raw_writel(0x00000010, SDRC_SYSCONFIG); /* smart idle mode */
/* SDRC_SHARING */
/* U-boot is writing 0x00000100 though (H4_2420_SDRC_SHARING ) */
//__raw_writel(H4_2420_SDRC_SHARING, SDRC_SHARING);
__raw_writel(0x00004900, SDRC_SHARING);
/* SDRC_CS0 Configuration */
/* None for ES2.1 */
/* SDRC_CS1 Configuration */
__raw_writel(0x00000000, SDRC_CS_CFG); /* Remap CS1 to 0x80000000 */
/* Disable power down of CKE */
__raw_writel(0x00000085, SDRC_POWER);
__raw_writel(0x01A02019, SDRC_MCFG_1); /* SDRC_MCFG1 */
__raw_writel(0x0003DD03, SDRC_RFR_CTRL1); /* SDRC_RFR_CTRL1 */
__raw_writel(0x92DDC485, SDRC_ACTIM_CTRLA_1); /* SDRC_ACTIM_CTRLA0 */
__raw_writel(0x00000014, SDRC_ACTIM_CTRLB_1); /* SDRC_ACTIM_CTRLB0 */
/*Manual Command sequence */
__raw_writel(0x00000000, 0x680090D8);
__raw_writel(0x00000001, 0x680090D8);
__raw_writel(0x00000002, 0x680090D8);
__raw_writel(0x00000002, 0x680090D8);
/* CS0 SDRC Mode Register */
/* Burst length = 4 - DDR memory */
/* Serial mode */
/* CAS latency = 3 */
__raw_writel(0x00000032, 0x680090B4);
__raw_writel(0x00000020, 0x680090BC); /* weak-strength driver */
/* SDRC DLLA control register */
/* Delay is 90 degrees */
if (rev == CPU_2420_2422_ES1) {
/* Enable DLL, Load counter with 115 (middle of range) */
__raw_writel(0x00007302, SDRC_DLLA_CTRL);
/* Enable DLL, Load counter with 128 (middle of range) */
__raw_writel(0x00007302, SDRC_DLLB_CTRL);
}
else {
/* Enable DLL, Load counter with 115 (middle of range) */
__raw_writel(0x00003108, SDRC_DLLA_CTRL); // ES2.x
/* Enable DLL, Load counter with 128 (middle of range) */
__raw_writel(0x00003108, SDRC_DLLB_CTRL); // ES2.x
}
}
#endif // CFG_SDRAM_STACKED
/*************************************************************
* get_sys_clk_speed - determine reference oscillator speed
* based on known 32kHz clock and gptimer.
*************************************************************/
u32 get_osc_clk_speed(u32 *shift)
{
#define GPT_EN ((0<<2)|BIT1|BIT0) /* enable sys_clk NO-prescale /1 */
#define GPT_CTR OMAP24XX_GPT2+TCRR /* read counter address */
u32 start, cstart, cend, cdiff, val;
unsigned int v, if_clks=0, func_clks=0 ;
if(__raw_readl(PRCM_CLKSRC_CTRL) & BIT7){ /* if currently /2 */
*shift = 1;
}else{
*shift = 0;
}
/* enable timer2 */
val = __raw_readl(CM_CLKSEL2_CORE) | 0x4; /* mask for sys_clk use */
__raw_writel(val, CM_CLKSEL2_CORE); /* timer2 source to sys_clk */
__raw_writel(BIT4, CM_ICLKEN1_CORE); /* timer2 interface clock on */
__raw_writel(BIT4, CM_FCLKEN1_CORE); /* timer2 function clock on */
/* Enable GP2 timer.*/
if_clks |= BIT4;
func_clks |= BIT4;
v = __raw_readl(CM_ICLKEN1_CORE) | if_clks; /* Interface clocks on */
__raw_writel(v,CM_ICLKEN1_CORE );
v = __raw_readl(CM_FCLKEN1_CORE) | func_clks; /* Functional Clocks on */
__raw_writel(v, CM_FCLKEN1_CORE);
__raw_writel(0, OMAP24XX_GPT2+TLDR); /* start counting at 0 */
__raw_writel(GPT_EN, OMAP24XX_GPT2+TCLR); /* enable clock */
/* enable 32kHz source */ /* enabled out of reset */
/* determine sys_clk via gauging */
start = 20 + __raw_readl(S32K_CR); /* start time in 20 cycles*/
while(__raw_readl(S32K_CR) < start); /* dead loop till start time */
cstart = __raw_readl(GPT_CTR); /* get start sys_clk count */
while(__raw_readl(S32K_CR) < (start+20)); /* wait for 40 cycles */
cend = __raw_readl(GPT_CTR); /* get end sys_clk count */
cdiff = cend - cstart; /* get elapsed ticks */
/* based on number of ticks assign speed */
if(cdiff > (19000 >> *shift))
return(S38_4M);
else if (cdiff > (15200 >> *shift))
return(S26M);
else if (cdiff > (13000 >> *shift))
return(S24M);
else if (cdiff > (9000 >> *shift))
return(S19_2M);
else if (cdiff > (7600 >> *shift))
return(S13M);
else
return(S12M);
}
/*********************************************************************************
* prcm_init() - inits clocks for PRCM as defined in clocks.h (config II default).
* -- called from SRAM
*********************************************************************************/
void
prcm_init()
{
u32 div, speed, val, div_by_2;
val = __raw_readl(PRCM_CLKSRC_CTRL) & ~(BIT1 | BIT0);
#if defined(OMAP2430_SQUARE_CLOCK_INPUT)
__raw_writel(val, PRCM_CLKSRC_CTRL);
#else
__raw_writel((val | BIT0), PRCM_CLKSRC_CTRL);
#endif
speed = get_osc_clk_speed(&div_by_2);
if((speed > S19_2M) && (!div_by_2)){ /* if fast && /2 off, enable it */
val = ~(BIT6|BIT7) & __raw_readl(PRCM_CLKSRC_CTRL);
val |= (0x2 << 6); /* divide by 2 if (24,26,38.4) -> (12/13/19.2) */
__raw_writel(val, PRCM_CLKSRC_CTRL);
}
__raw_writel(0, CM_FCLKEN1_CORE); /* stop all clocks to reduce ringing */
__raw_writel(0, CM_FCLKEN2_CORE); /* may not be necessary */
__raw_writel(0, CM_ICLKEN1_CORE);
__raw_writel(0, CM_ICLKEN2_CORE);
/*DPLL into low power bypass (others off) */
__raw_writel(0x00000001, CM_CLKEN_PLL);
__raw_writel(DPLL_OUT, CM_CLKSEL2_PLL); /* set DPLL out */
__raw_writel(MPU_DIV, CM_CLKSEL_MPU); /* set MPU divider */
__raw_writel(DSP_DIV, CM_CLKSEL_DSP); /* set dsp and iva dividers */
__raw_writel(GFX_DIV, CM_CLKSEL_GFX); /* set gfx dividers */
__raw_writel(MDM_DIV, CM_CLKSEL_MDM); /* set mdm dividers */
div = BUS_DIV;
__raw_writel(div, CM_CLKSEL1_CORE);/* set L3/L4/USB/Display/SSi dividers */
delay(1000);
/*13MHz apll src, PRCM 'x' DPLL rate */
__raw_writel(DPLL_VAL, CM_CLKSEL1_PLL);
/*Valid the configuration */
__raw_writel(0x00000001, PRCM_CLKCFG_CTRL);
delay(1000);
/* set up APLLS_CLKIN per crystal */
if (speed > S19_2M)
speed >>= 1; /* if fast shift to /2 range */
val = (0x2 << 23); /* default to 13Mhz for 2430c */
if (speed == S12M)
val = (0x3 << 23);
else if (speed == S19_2M)
val = (0x0 << 23);
val |= (~(BIT23|BIT24|BIT25) & __raw_readl(CM_CLKSEL1_PLL));
__raw_writel(val, CM_CLKSEL1_PLL);
__raw_writel(DPLL_LOCK|APLL_LOCK, CM_CLKEN_PLL); /* enable apll */
wait_on_value(BIT8, BIT8, CM_IDLEST_CKGEN, LDELAY);/* wait for apll lock */
delay(200000);
}
void SEC_generic(void)
{
/* Permission values for registers -Full fledged permissions to all */
#define UNLOCK_1 0xFFFFFFFF
#define UNLOCK_2 0x00000000
#define UNLOCK_3 0x0000FFFF
/* Protection Module Register Target APE (PM_RT)*/
__raw_writel(UNLOCK_1, PM_RT_APE_BASE_ADDR_ARM + 0x68); /* REQ_INFO_PERMISSION_1 L*/
__raw_writel(UNLOCK_1, PM_RT_APE_BASE_ADDR_ARM + 0x50); /* READ_PERMISSION_0 L*/
__raw_writel(UNLOCK_1, PM_RT_APE_BASE_ADDR_ARM + 0x58); /* WRITE_PERMISSION_0 L*/
__raw_writel(UNLOCK_2, PM_RT_APE_BASE_ADDR_ARM + 0x60); /* ADDR_MATCH_1 L*/
__raw_writel(UNLOCK_3, PM_GPMC_BASE_ADDR_ARM + 0x48); /* REQ_INFO_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_GPMC_BASE_ADDR_ARM + 0x50); /* READ_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_GPMC_BASE_ADDR_ARM + 0x58); /* WRITE_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_OCM_RAM_BASE_ADDR_ARM + 0x48); /* REQ_INFO_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_OCM_RAM_BASE_ADDR_ARM + 0x50); /* READ_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_OCM_RAM_BASE_ADDR_ARM + 0x58); /* WRITE_PERMISSION_0 L*/
__raw_writel(UNLOCK_2, PM_OCM_RAM_BASE_ADDR_ARM + 0x80); /* ADDR_MATCH_2 L*/
/* IVA Changes */
__raw_writel(UNLOCK_3, PM_IVA2_BASE_ADDR_ARM + 0x48); /* REQ_INFO_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_IVA2_BASE_ADDR_ARM + 0x50); /* READ_PERMISSION_0 L*/
__raw_writel(UNLOCK_3, PM_IVA2_BASE_ADDR_ARM + 0x58); /* WRITE_PERMISSION_0 L*/
}
/**********************************************************
* Routine: try_unlock_sram()
* Description: If chip is GP type, unlock the SRAM for general use.
***********************************************************/
void try_unlock_sram(void)
{
int mode;
/* if GP device unlock device SRAM for general use */
mode = get_device_type();
if ((mode == GP_DEVICE) || (mode == HS_DEVICE) || (mode == EMU_DEVICE)
|| (mode == TST_DEVICE)) {
/* Secure or Emulation device - HS/E/T */
SEC_generic();
}
return;
}
/**********************************************************
* Routine: s_init
* Description: Does early system init of muxing and clocks.
* - Called at time when only stack is available.
**********************************************************/
int s_init(int skip)
{
u32 rev;
rev = get_cpu_rev();
watchdog_init();
try_unlock_sram();
muxSetupAll();
delay(100);
prcm_init();
#ifdef CFG_SDRAM_DDR
config_sdram_ddr(rev);
#elif defined(CFG_SDRAM_COMBO)
config_sdram_combo(rev);
#elif defined(CFG_2430SDRAM_DDR)
config_2430sdram_ddr(rev);
#elif defined(CFG_SDRAM_STACKED)
config_sdram_stacked(rev);
#else
#error SDRAM type not supported
#endif
delay(20000);
peripheral_enable();
return(0);
}
/*******************************************************
* Routine: misc_init_r
* Description: Init ethernet (done here so udelay works)
********************************************************/
int misc_init_r (void)
{
return(0);
}
/****************************************
* Routine: watchdog_init
* Description: Shut down watch dogs
*****************************************/
static void watchdog_init(void)
{
#define GP (BIT8|BIT9)
/* There are 4 watch dogs. 1 secure, and 3 general purpose.
* I would expect that the ROM takes care of the secure one,
* but we will try also. Of the 3 GP ones, 1 can reset us
* directly, the other 2 only generate MPU interrupts.
*/
__raw_writel(WD_UNLOCK1 ,WD2_BASE+WSPR);
wait_for_command_complete(WD2_BASE);
__raw_writel(WD_UNLOCK2 ,WD2_BASE+WSPR);
}
/******************************************************
* Routine: wait_for_command_complete
* Description: Wait for posting to finish on watchdog
******************************************************/
static void wait_for_command_complete(unsigned int wd_base)
{
int pending = 1;
do {
pending = __raw_readl(wd_base+WWPS);
} while (pending);
}
/**********************************************
* Routine: dram_init
* Description: sets uboots idea of sdram size
**********************************************/
int dram_init (void)
{
return 0;
}
/*****************************************************************
* Routine: peripheral_enable
* Description: Enable the clks & power for perifs (GPT2, UART1,...)
******************************************************************/
static void peripheral_enable(void)
{
unsigned int v, if_clks=0, if_clks2 = 0, func_clks=0, func_clks2 = 0;
/* Enable GP2 timer.*/
if_clks |= BIT4;
func_clks |= BIT4;
v = __raw_readl(CM_CLKSEL2_CORE) | 0x4; /* Sys_clk input OMAP24XX_GPT2 */
__raw_writel(v, CM_CLKSEL2_CORE);
__raw_writel(0x1, CM_CLKSEL_WKUP);
#ifdef CFG_NS16550
/* Enable UART1 clock */
func_clks |= BIT21;
if_clks |= BIT21;
#endif
v = __raw_readl(CM_ICLKEN1_CORE) | if_clks; /* Interface clocks on */
__raw_writel(v,CM_ICLKEN1_CORE );
v = __raw_readl(CM_ICLKEN2_CORE) | if_clks2; /* Interface clocks on */
__raw_writel(v, CM_ICLKEN2_CORE);
v = __raw_readl(CM_FCLKEN1_CORE) | func_clks; /* Functional Clocks on */
__raw_writel(v, CM_FCLKEN1_CORE);
v = __raw_readl(CM_FCLKEN2_CORE) | func_clks2; /* Functional Clocks on */
__raw_writel(v, CM_FCLKEN2_CORE);
delay(1000);
}
/* Do pin muxing for all the devices used in X-Loader */
#define MUX_VAL(OFFSET,VALUE)\
__raw_writeb(VALUE, OMAP24XX_CTRL_BASE + OFFSET);
static void muxSetupAll(void)
{
/* UART 1*/
MUX_VAL(0x00B1, 0x1B) /* uart1_cts- EN, HI, 3, ->gpio_32 */
MUX_VAL(0x00B2, 0x1B) /* uart1_rts- EN, HI, 3, ->gpio_8 */
MUX_VAL(0x00B3, 0x1B) /* uart1_tx- EN, HI, 3, ->gpio_9 */
MUX_VAL(0x00B4, 0x1B) /* uart1_rx- EN, HI, 3, ->gpio_10 */
MUX_VAL(0x0107, 0x01) /* ssi1_dat_tx- Dis, 1, ->uart1_tx */
MUX_VAL(0x0108, 0x01) /* ssi1_flag_tx- Dis, 1, ->uart1_rts */
MUX_VAL(0x0109, 0x01) /* ssi1_rdy_tx- Dis, 1, ->uart1_cts */
MUX_VAL(0x010A, 0x01) /* ssi1_dat_rx- Dis, 1, ->uart1_rx */
/* Mux settings for SDRC */
MUX_VAL(0x0054, 0x1B) /* sdrc_a14 - EN, HI, 3, ->gpio_0 */
MUX_VAL(0x0055, 0x1B) /* sdrc_a13 - EN, HI, 3, ->gpio_1 */
MUX_VAL(0x0056, 0x00) /* sdrc_a12 - Dis, 0 */
MUX_VAL(0x0046, 0x00) /* sdrc_ncs1 - Dis, 0 */
MUX_VAL(0x0048, 0x00) /* sdrc_cke1 - Dis, 0 */
/* GPMC */
MUX_VAL(0x0030, 0x00) /* gpmc_clk - Dis, 0 */
MUX_VAL(0x0032, 0x00) /* gpmc_ncs1- Dis, 0 */
MUX_VAL(0x0033, 0x00) /* gpmc_ncs2- Dis, 0 */
MUX_VAL(0x0034, 0x03) /* gpmc_ncs3- Dis, 3, ->gpio_24 */
MUX_VAL(0x0035, 0x03) /* gpmc_ncs4- Dis, 3, ->gpio_25 */
MUX_VAL(0x0036, 0x00) /* gpmc_ncs5- Dis, 0 */
MUX_VAL(0x0037, 0x03) /* gpmc_ncs6- Dis, 3, ->gpio_27 */
MUX_VAL(0x0038, 0x00) /* gpmc_ncs7- Dis, 0 */
MUX_VAL(0x0040, 0x18) /* gpmc_wait1- Dis, 0 */
MUX_VAL(0x0041, 0x18) /* gpmc_wait2- Dis, 0 */
MUX_VAL(0x0042, 0x1B) /* gpmc_wait3- EN, HI, 3, ->gpio_35 */
MUX_VAL(0x0085, 0x1B) /* gpmc_a10- EN, HI, 3, ->gpio_3 */
}
int nand_init(void)
{
u32 rev;
/* GPMC Configuration */
rev = get_cpu_rev();
/* global settings */
__raw_writel(0x10, GPMC_SYSCONFIG); /* smart idle */
__raw_writel(0x0, GPMC_IRQENABLE); /* isr's sources masked */
__raw_writel(0, GPMC_TIMEOUT_CONTROL);/* timeout disable */
#ifdef CFG_NAND
__raw_writel(0x001, GPMC_CONFIG); /* set nWP, disable limited addr */
#endif
/* Set the GPMC Vals . For NAND boot on 2430SDP, NAND is mapped at CS0
* , NOR at CS1 and MPDB at CS5. And oneNAND boot, we map oneNAND at CS0.
* We configure only GPMC CS0 with required values. Configiring other devices
* at other CS in done in u-boot anyway. So we don't have to bother doing it here.
*/
__raw_writel(0, GPMC_CONFIG7_0);
sdelay(1000);
#ifdef CFG_NAND
__raw_writel( SMNAND_GPMC_CONFIG1, GPMC_CONFIG1_0);
__raw_writel( SMNAND_GPMC_CONFIG2, GPMC_CONFIG2_0);
__raw_writel( SMNAND_GPMC_CONFIG3, GPMC_CONFIG3_0);
__raw_writel( SMNAND_GPMC_CONFIG4, GPMC_CONFIG4_0);
__raw_writel( SMNAND_GPMC_CONFIG5, GPMC_CONFIG5_0);
__raw_writel( SMNAND_GPMC_CONFIG6, GPMC_CONFIG6_0);
#else /* CFG_ONENAND */
__raw_writel( ONENAND_GPMC_CONFIG1, GPMC_CONFIG1_0);
__raw_writel( ONENAND_GPMC_CONFIG2, GPMC_CONFIG2_0);
__raw_writel( ONENAND_GPMC_CONFIG3, GPMC_CONFIG3_0);
__raw_writel( ONENAND_GPMC_CONFIG4, GPMC_CONFIG4_0);
__raw_writel( ONENAND_GPMC_CONFIG5, GPMC_CONFIG5_0);
__raw_writel( ONENAND_GPMC_CONFIG6, GPMC_CONFIG6_0);
#endif
/* Enable the GPMC Mapping */
__raw_writel(( ((OMAP24XX_GPMC_CS0_SIZE & 0xF)<<8) |
((OMAP24XX_GPMC_CS0_MAP>>24) & 0x3F) |
(1<<6) ), GPMC_CONFIG7_0);
sdelay(2000);
#ifdef CFG_NAND
if (nand_chip()){
#ifdef CFG_PRINTF
printf("Unsupported Chip!\n");
#endif
return 1;
}
#else
if (onenand_chip()){
#ifdef CFG_PRINTF
printf("OneNAND Unsupported !\n");
#endif
return 1;
}
#endif
return 0;
}
/* optionally do something like blinking LED */
void board_hang (void)
{ while (0) {};}