/* * (C) Copyright 2005-2007 * Samsung Electronics. * Kyungmin Park * * Derived from omap2420 * * 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 #include #include #include #include #include #include #include #include #include void wait_for_command_complete(unsigned int wd_base); DECLARE_GLOBAL_DATA_PTR; #define write_config_reg(reg, value) \ do { \ writeb(value, reg); \ } while (0) #define mask_config_reg(reg, mask) \ do { \ char value = readb(reg) & ~(mask); \ writeb(value, reg); \ } while (0) /******************************************************* * Routine: delay * Description: spinning delay to use before udelay works ******************************************************/ static inline void delay(unsigned long loops) { __asm__("1:\n" "subs %0, %1, #1\n" "bne 1b":"=r" (loops):"0"(loops)); } /***************************************** * Routine: board_init * Description: Early hardware init. *****************************************/ int board_init(void) { gpmc_init(); /* in SRAM or SDRM, finish GPMC */ gd->bd->bi_arch_number = 919; /* adress of boot parameters */ gd->bd->bi_boot_params = (OMAP2420_SDRC_CS0 + 0x100); return 0; } /********************************************************** * Routine: s_init * Description: Does early system init of muxing and clocks. * - Called path is with sram stack. **********************************************************/ void s_init(void) { watchdog_init(); set_muxconf_regs(); delay(100); peripheral_enable(); icache_enable(); } /******************************************************* * 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 *****************************************/ void watchdog_init(void) { /* There are 4 watch dogs. 1 secure, and 3 general purpose. * The ROM takes care of the secure one. 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); #define MPU_WD_CLOCKED 1 #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 ******************************************************/ void wait_for_command_complete(unsigned int wd_base) { int pending = 1; do { pending = __raw_readl(wd_base + WWPS); } while (pending); } /******************************************************************* * Routine:board_eth_init * Description: take the Ethernet controller out of reset and wait * for the EEPROM load to complete. ******************************************************************/ int board_eth_init(bd_t *bis) { int rc = 0; #ifdef CONFIG_LAN91C96 int cnt = 20; __raw_writeb(0x03, OMAP2420_CTRL_BASE + 0x0f2); /*protect->gpio74 */ __raw_writew(0x0, LAN_RESET_REGISTER); do { __raw_writew(0x1, LAN_RESET_REGISTER); udelay(100); if (cnt == 0) goto eth_reset_err_out; --cnt; } while (__raw_readw(LAN_RESET_REGISTER) != 0x1); cnt = 20; do { __raw_writew(0x0, LAN_RESET_REGISTER); udelay(100); if (cnt == 0) goto eth_reset_err_out; --cnt; } while (__raw_readw(LAN_RESET_REGISTER) != 0x0000); udelay(1000); mask_config_reg(ETH_CONTROL_REG, 0x01); udelay(1000); rc = lan91c96_initialize(0, CONFIG_LAN91C96_BASE); eth_reset_err_out: #endif return rc; } /********************************************** * Routine: dram_init * Description: sets uboots idea of sdram size **********************************************/ int dram_init(void) { unsigned int size0 = 0, size1 = 0; u32 mtype, btype, rev = 0, cpu = 0; #define NOT_EARLY 0 btype = get_board_type(); mtype = get_mem_type(); rev = get_cpu_rev(); cpu = get_cpu_type(); display_board_info(btype); if ((mtype == DDR_COMBO) || (mtype == DDR_STACKED)) { /* init other chip select */ do_sdrc_init(SDRC_CS1_OSET, NOT_EARLY); } size0 = get_sdr_cs_size(SDRC_CS0_OSET); size1 = get_sdr_cs_size(SDRC_CS1_OSET); gd->bd->bi_dram[0].start = PHYS_SDRAM_1; gd->bd->bi_dram[0].size = size0; #if CONFIG_NR_DRAM_BANKS > 1 gd->bd->bi_dram[1].start = PHYS_SDRAM_1 + size0; gd->bd->bi_dram[1].size = size1; #endif return 0; } /********************************************************** * Routine: set_muxconf_regs * Description: Setting up the configuration Mux registers * specific to the hardware *********************************************************/ void set_muxconf_regs(void) { muxSetupSDRC(); muxSetupGPMC(); muxSetupUsb0(); /* USB Device */ muxSetupUsbHost(); /* USB Host */ muxSetupUART1(); muxSetupLCD(); muxSetupMMCSD(); muxSetupTouchScreen(); } /***************************************************************** * Routine: peripheral_enable * Description: Enable the clks & power for perifs (GPT2, UART1,...) ******************************************************************/ void peripheral_enable(void) { unsigned int v, if_clks = 0, func_clks = 0; /* Enable GP2 timer. */ if_clks |= BIT4 | BIT3; func_clks |= BIT4 | BIT3; /* Sys_clk input OMAP2420_GPT2 */ v = __raw_readl(CM_CLKSEL2_CORE) | 0x4 | 0x2; __raw_writel(v, CM_CLKSEL2_CORE); __raw_writel(0x1, CM_CLKSEL_WKUP); #ifdef CONFIG_SYS_NS16550 /* Enable UART1 clock */ func_clks |= BIT21; if_clks |= BIT21; #endif /* Interface clocks on */ v = __raw_readl(CM_ICLKEN1_CORE) | if_clks; __raw_writel(v, CM_ICLKEN1_CORE); /* Functional Clocks on */ v = __raw_readl(CM_FCLKEN1_CORE) | func_clks; __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 } /**************************************** * Routine: muxSetupUsb0 (ostboot) * Description: Setup usb muxing *****************************************/ void muxSetupUsb0(void) { mask_config_reg(CONTROL_PADCONF_USB0_PUEN, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_VP, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_VM, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_RCV, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_TXEN, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_SE0, 0x1f); mask_config_reg(CONTROL_PADCONF_USB0_DAT, 0x1f); } /**************************************** * Routine: muxSetupUSBHost (ostboot) * Description: Setup USB Host muxing *****************************************/ void muxSetupUsbHost(void) { /* V19 */ write_config_reg(CONTROL_PADCONF_USB1_RCV, 1); /* W20 */ write_config_reg(CONTROL_PADCONF_USB1_TXEN, 1); /* N14 */ write_config_reg(CONTROL_PADCONF_GPIO69, 3); /* P15 */ write_config_reg(CONTROL_PADCONF_GPIO70, 3); /* L18 */ write_config_reg(CONTROL_PADCONF_GPIO102, 3); /* L19 */ write_config_reg(CONTROL_PADCONF_GPIO103, 3); /* K15 */ write_config_reg(CONTROL_PADCONF_GPIO104, 3); /* K14 */ write_config_reg(CONTROL_PADCONF_GPIO105, 3); } /**************************************** * Routine: muxSetupUART1 (ostboot) * Description: Set up uart1 muxing *****************************************/ void muxSetupUART1(void) { /* UART1_CTS pin configuration, PIN = D21, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_UART1_CTS, 0); /* UART1_RTS pin configuration, PIN = H21, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_UART1_RTS, 0); /* UART1_TX pin configuration, PIN = L20, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_UART1_TX, 0); /* UART1_RX pin configuration, PIN = T21, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_UART1_RX, 0); } /**************************************** * Routine: muxSetupLCD (ostboot) * Description: Setup lcd muxing *****************************************/ void muxSetupLCD(void) { /* LCD_D0 pin configuration, PIN = Y7, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D0, 0); /* LCD_D1 pin configuration, PIN = P10 , Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D1, 0); /* LCD_D2 pin configuration, PIN = V8, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D2, 0); /* LCD_D3 pin configuration, PIN = Y8, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D3, 0); /* LCD_D4 pin configuration, PIN = W8, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D4, 0); /* LCD_D5 pin configuration, PIN = R10, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D5, 0); /* LCD_D6 pin configuration, PIN = Y9, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D6, 0); /* LCD_D7 pin configuration, PIN = V9, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D7, 0); /* LCD_D8 pin configuration, PIN = W9, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D8, 0); /* LCD_D9 pin configuration, PIN = P11, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D9, 0); /* LCD_D10 pin configuration, PIN = V10, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D10, 0); /* LCD_D11 pin configuration, PIN = Y10, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D11, 0); /* LCD_D12 pin configuration, PIN = W10, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D12, 0); /* LCD_D13 pin configuration, PIN = R11, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D13, 0); /* LCD_D14 pin configuration, PIN = V11, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D14, 0); /* LCD_D15 pin configuration, PIN = W11, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D15, 0); /* LCD_D16 pin configuration, PIN = P12, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D16, 0); /* LCD_D17 pin configuration, PIN = R12, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_D17, 0); /* LCD_PCLK pin configuration, PIN = W6, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_PCLK, 0); /* LCD_VSYNC pin configuration, PIN = V7, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_VSYNC, 0); /* LCD_HSYNC pin configuration, PIN = Y6, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_HSYNC, 0); /* LCD_ACBIAS pin configuration, PIN = W7, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_DSS_ACBIAS, 0); } /**************************************** * Routine: muxSetupMMCSD (ostboot) * Description: set up MMC muxing *****************************************/ void muxSetupMMCSD(void) { /* SDMMC_CLKI pin configuration, PIN = H15, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_CLKI, 0); /* SDMMC_CLKO pin configuration, PIN = G19, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_CLKO, 0); /* SDMMC_CMD pin configuration, PIN = H18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_CMD, 0); /* SDMMC_DAT0 pin configuration, PIN = F20, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT0, 0); /* SDMMC_DAT1 pin configuration, PIN = H14, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT1, 0); /* SDMMC_DAT2 pin configuration, PIN = E19, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT2, 0); /* SDMMC_DAT3 pin configuration, PIN = D19, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT3, 0); /* SDMMC_DDIR0 pin configuration, PIN = F19, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT_DIR0, 0); /* SDMMC_DDIR1 pin configuration, PIN = E20, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT_DIR1, 0); /* SDMMC_DDIR2 pin configuration, PIN = F18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT_DIR2, 0); /* SDMMC_DDIR3 pin configuration, PIN = E18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_DAT_DIR3, 0); /* SDMMC_CDIR pin configuration, PIN = G18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_MMC_CMD_DIR, 0); } /****************************************** * Routine: muxSetupTouchScreen (ostboot) * Description: Set up touch screen muxing *******************************************/ void muxSetupTouchScreen(void) { /* SPI1_CLK pin configuration, PIN = U18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_SPI1_CLK, 0); /* SPI1_MOSI pin configuration, PIN = V20, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_SPI1_SIMO, 0); /* SPI1_MISO pin configuration, PIN = T18, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_SPI1_SOMI, 0); /* SPI1_nCS0 pin configuration, PIN = U19, Mode = 0, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_SPI1_NCS0, 0); #define CONTROL_PADCONF_GPIO85 CONTROL_PADCONF_SPI1_NCS1 /* PEN_IRQ pin configuration, PIN = N15, Mode = 3, PUPD=Disabled */ write_config_reg(CONTROL_PADCONF_GPIO85, 3); } /*************************************************************** * Routine: muxSetupGPMC (ostboot) * Description: Configures balls which cam up in protected mode ***************************************************************/ void muxSetupGPMC(void) { /* gpmc_io_dir, MCR */ volatile unsigned int *MCR = (unsigned int *) 0x4800008C; *MCR = 0x19000000; /* NOR FLASH CS0 */ /* signal - Gpmc_clk; pin - J4; offset - 0x0088; mode 0; Byte-3 */ write_config_reg(CONTROL_PADCONF_GPMC_D2_BYTE3, 0); /* MPDB(Multi Port Debug Port) CS1 */ /* signal - gpmc_ncs1; pin - N8; offset - 0x008D; mode 0; Byte-1 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE1, 0); /* signal - Gpmc_ncs2; pin - E2; offset - 0x008E; mode 0; Byte-2 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE2, 0); /* signal - Gpmc_ncs3; pin - N2; offset - 0x008F; mode 0; Byte-3 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE3, 0); /* signal - Gpmc_ncs4; pin - ??; offset - 0x0090; mode 0; Byte-4 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE4, 0); /* signal - Gpmc_ncs5; pin - ??; offset - 0x0091; mode 0; Byte-5 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE5, 0); /* signal - Gpmc_ncs6; pin - ??; offset - 0x0092; mode 0; Byte-6 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE6, 0); /* signal - Gpmc_ncs7; pin - ??; offset - 0x0093; mode 0; Byte-7 */ write_config_reg(CONTROL_PADCONF_GPMC_NCS0_BYTE7, 0); } /**************************************************************** * Routine: muxSetupSDRC (ostboot) * Description: Configures balls which come up in protected mode ****************************************************************/ void muxSetupSDRC(void) { /* It's set by IPL */ }