diff options
Diffstat (limited to 'board/omap2420h4/omap2420h4.c')
| -rw-r--r-- | board/omap2420h4/omap2420h4.c | 598 |
1 files changed, 0 insertions, 598 deletions
diff --git a/board/omap2420h4/omap2420h4.c b/board/omap2420h4/omap2420h4.c deleted file mode 100644 index ef81b49..0000000 --- a/board/omap2420h4/omap2420h4.c +++ /dev/null @@ -1,598 +0,0 @@ -/* - * Copyright (C) 2005 Texas Instruments. - * 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/omap2420.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 muxSetupUART1(void); -static u32 get_cpu_rev(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; -} - -#ifdef CFG_SDRAM_DDR -void -config_sdram_ddr(u32 rev) -{ - /* ball D11, mode 0 */ - __raw_writeb(0x08, 0x48000032); - - /* SDRC_CS0 Configuration */ - if (rev == CPU_2420_2422_ES1) { - __raw_writel(H4_2422_SDRC_MDCFG_0_DDR, SDRC_MCFG_0); - __raw_writel(H4_2422_SDRC_SHARING, SDRC_SHARING); - } else { - __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 */ - if (rev == CPU_2420_2422_ES1) { - /* Enable DLL, Load counter with 115 (middle of range) */ - __raw_writel(0x00000002, SDRC_DLLA_CTRL); - /* Enable DLL, Load counter with 128 (middle of range) */ - __raw_writel(0x00000002, SDRC_DLLB_CTRL); - } else { - /* 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); - delay(200000); - __raw_writel(0x00000010, SDRC_SYSCONFIG); - - /* SDRCTriState: no Tris */ - /* CS0MuxCfg: 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 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); - __raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, SDRC_RFR_CTRL); - - /* 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(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); - __raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, 0x680090d4); - - /* Manual Command sequence */ - __raw_writel(CMD_NOP, SDRC_MANUAL_1); - __raw_writel(CMD_PRECHARGE, SDRC_MANUAL_1); - __raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_1); - __raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_1); - - /* CS1 SDRC Mode Register */ - /* Burst length = 4 - DDR memory */ - /* Serial mode */ - /* CAS latency = 3 */ - __raw_writel(H4_2422_SDRC_MR_0_DDR, SDRC_MR_1); - - /* 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(H4_2420_SDRC_DLLAB_CTRL, SDRC_DLLB_CTRL); // ES2.x ? - __raw_writel(H4_2420_SDRC_DLLAB_CTRL & ~(LOADDLL|dllctrl), SDRC_DLLB_CTRL); // ES2.x - } -} - -#endif // CFG_SDRAM_COMBO - -#ifdef CFG_SDRAM_SDR -void -config_sdram_sdr(u32 rev) -{ - u32 dllctrl=0; - - /* ball D11, mode 0 */ - __raw_writeb(0x00, 0x48000032); - - __raw_writel(0x00000012, SDRC_SYSCONFIG); - delay(200000); - __raw_writel(0x00000010, 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) */ - 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 MUX14: 32Mbx32 */ - __raw_writel(H4_2420_SDRC_MDCFG_0_SDR, SDRC_MCFG_0); /* diff from combo case */ - __raw_writel(H4_2420_SDRC_ACTIM_CTRLA_0, SDRC_ACTIM_CTRLA_0); - __raw_writel(H4_2420_SDRC_ACTIM_CTRLB_0, SDRC_ACTIM_CTRLB_0); - __raw_writel(H4_242x_SDRC_RFR_CTRL_ES1, SDRC_RFR_CTRL); - - /* 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 = 2 - SDR memory */ - /* Serial mode */ - /* CAS latency = 3 */ - __raw_writel(H4_2420_SDRC_MR_0_SDR, SDRC_MR_0); /* diff from combo case */ - - /* SDRC DLLA control register */ - /* Enable DLL, Load counter with 115 (middle of range) */ - /* Delay is 90 degrees */ - - if (rev == CPU_242X_ES1) - dllctrl = (BIT0|BIT3); - else - dllctrl = BIT0; - - if (rev == CPU_2420_2422_ES1) { - __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 { - __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 - /* 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 - } - -} -#endif // CFG_SDRAM_SDR - -#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(CMD_NOP, SDRC_MANUAL_1); - __raw_writel(CMD_PRECHARGE, SDRC_MANUAL_1); - __raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_1); - __raw_writel(CMD_AUTOREFRESH, SDRC_MANUAL_1); - - /* CS0 SDRC Mode Register */ - /* Burst length = 4 - DDR memory */ - /* Serial mode */ - /* CAS latency = 3 */ - __raw_writel(0x00000032, SDRC_MR_1); - __raw_writel(0x00000020, SDRC_EMR2_1); /* 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 - -/********************************************************** - * 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(); - muxSetupUART1(); - delay(100); - - /*DPLL out = 2x DPLL --> core clock */ - __raw_writel(DPLL_OUT, CM_CLKSEL2_PLL); - - /*DPLL into low power bypass (others off) */ - __raw_writel(0x00000001, CM_CLKEN_PLL); - - /*MPU core clock = Core /2 = 300 */ - __raw_writel(MPU_DIV, CM_CLKSEL_MPU); - - /*DSPif=200, DSPif=100, IVA=200 */ - __raw_writel(DSP_DIV, CM_CLKSEL_DSP); - - /*GFX clock (L3/2) 50MHz */ - __raw_writel(GFX_DIV, CM_CLKSEL_GFX); - - /*L3=100, L4=100, DisplaySS=50 Vlync=96Mhz,ssi=100, usb=50 */ - __raw_writel(BUS_DIV, CM_CLKSEL1_CORE); - - /*12MHz apll src, 12/(1+1)*50=300 */ - __raw_writel(DPLL_VAL, CM_CLKSEL1_PLL); - - /*Valid the configuration */ - __raw_writel(0x00000001, PRCM_CLKCFG_CTRL); - delay(1000); - - /*Enable DPLL=300, 96MHz APLL locked. */ - __raw_writel(0x0000000F, CM_CLKEN_PLL); - delay(200000); - -#ifdef CFG_SDRAM_DDR - config_sdram_ddr(rev); -#elif defined(CFG_SDRAM_COMBO) - config_sdram_combo(rev); -#elif defined(CFG_SDRAM_SDR) - config_sdram_sdr(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); - -#if MPU_WD_CLOCKED /* value 0x10 stick on aptix, BIT4 polarity seems oppsite*/ - __raw_writel(WD_UNLOCK1 ,WD3_BASE+WSPR); - wait_for_command_complete(WD3_BASE); - __raw_writel(WD_UNLOCK2 ,WD3_BASE+WSPR); - - __raw_writel(WD_UNLOCK1 ,WD4_BASE+WSPR); - wait_for_command_complete(WD4_BASE); - __raw_writel(WD_UNLOCK2 ,WD4_BASE+WSPR); -#endif - -} - -/****************************************************** - * 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, func_clks=0; - - /* Enable GP2 timer.*/ - if_clks |= BIT4; - func_clks |= BIT4; - v = __raw_readl(CM_CLKSEL2_CORE) | 0x4; /* Sys_clk input OMAP2420_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_FCLKEN1_CORE) | func_clks; /* Functional Clocks on */ - __raw_writel(v, CM_FCLKEN1_CORE); - delay(1000); - -#ifndef KERNEL_UPDATED - { -#define V1 0xffffffff -#define V2 0x00000007 - - __raw_writel(V1, CM_FCLKEN1_CORE); - __raw_writel(V2, CM_FCLKEN2_CORE); - __raw_writel(V1, CM_ICLKEN1_CORE); - __raw_writel(V1, CM_ICLKEN2_CORE); - } -#endif - -} - -/* Pin Muxing registers used for UART1 */ -#define CONTROL_PADCONF_UART1_CTS ((volatile unsigned char *)0x480000C5) -#define CONTROL_PADCONF_UART1_RTS ((volatile unsigned char *)0x480000C6) -#define CONTROL_PADCONF_UART1_TX ((volatile unsigned char *)0x480000C7) -#define CONTROL_PADCONF_UART1_RX ((volatile unsigned char *)0x480000C8) -/**************************************** - * Routine: muxSetupUART1 (ostboot) - * Description: Set up uart1 muxing - *****************************************/ -static void muxSetupUART1(void) -{ - volatile unsigned char *MuxConfigReg; - - /* UART1_CTS pin configuration, PIN = D21 */ - MuxConfigReg = (volatile unsigned char *)CONTROL_PADCONF_UART1_CTS; - *MuxConfigReg = 0x00 ; /* Mode = 0, PUPD=Disabled */ - - /* UART1_RTS pin configuration, PIN = H21 */ - MuxConfigReg = (volatile unsigned char *)CONTROL_PADCONF_UART1_RTS; - *MuxConfigReg = 0x00 ; /* Mode = 0, PUPD=Disabled */ - - /* UART1_TX pin configuration, PIN = L20 */ - MuxConfigReg = (volatile unsigned char *)CONTROL_PADCONF_UART1_TX; - *MuxConfigReg = 0x00 ; /* Mode = 0, PUPD=Disabled */ - - /* UART1_RX pin configuration, PIN = T21 */ - MuxConfigReg = (volatile unsigned char *)CONTROL_PADCONF_UART1_RX; - *MuxConfigReg = 0x00 ; /* Mode = 0, PUPD=Disabled */ -} - -int nand_init(void) -{ - u32 rev; - - rev = get_cpu_rev(); - - - /* GPMC pin muxing */ - (*(volatile int*)0x48000070) &= 0x000000FF; - (*(volatile int*)0x48000074) &= 0x00000000; - (*(volatile int*)0x48000078) &= 0x00000000; - (*(volatile int*)0x4800007C) &= 0x00000000; - (*(volatile int*)0x48000080) &= 0xFF000000; - - /* GPMC_IO_DIR */ - (*(volatile int*)0x4800008C) = 0x19000000; - - /* GPMC Configuration */ - (*(volatile int*)0x6800A010) = 0x0000000A; - while (((*(volatile int *)0x6800A014) & 0x00000001) == 0); - - (*(volatile int*)0x6800A050) = 0x00000001; - (*(volatile int*)0x6800A060) = 0x00001800; - (*(volatile int*)0x6800A064) = 0x00141400; - (*(volatile int*)0x6800A068) = 0x00141400; - (*(volatile int*)0x6800A06C) = 0x0F010F01; - (*(volatile int*)0x6800A070) = 0x010C1414; - (*(volatile int*)0x6800A074) = 0x00000A80; - (*(volatile int*)0x6800A078) = 0x00000C44; //base 0x04000000 - - (*(volatile int*)0x6800A0A8) = 0x00000000; - delay(1000); -#ifdef CFG_SDRAM_STACKED - (*(volatile int*)0x6800A090) = 0x00011000; -#else - (*(volatile int*)0x6800A090) = 0x00011200; -#endif - (*(volatile int*)0x6800A094) = 0x001f1f00; - (*(volatile int*)0x6800A098) = 0x00080802; - (*(volatile int*)0x6800A09C) = 0x1C091C09; - (*(volatile int*)0x6800A0A0) = 0x031A1F1F; - (*(volatile int*)0x6800A0A4) = 0x000003C2; - (*(volatile int*)0x6800A0A8) = 0x00000F48; - - if (rev != CPU_2420_2422_ES1) - (*(volatile int*)0x6800A040) = 0x1FF0; // es2.x - - if (nand_chip()){ - printf("Unsupported Chip!\n"); - return 1; - } - 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 */ -} - -/* optionally do something like blinking LED */ -void board_hang (void) -{} - - - |