diff options
Diffstat (limited to 'board/st-ericsson/u8500/u8500_href.c')
| -rw-r--r-- | board/st-ericsson/u8500/u8500_href.c | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/board/st-ericsson/u8500/u8500_href.c b/board/st-ericsson/u8500/u8500_href.c new file mode 100644 index 0000000..525633e --- /dev/null +++ b/board/st-ericsson/u8500/u8500_href.c @@ -0,0 +1,546 @@ +/* + * Copyright (C) ST-Ericsson SA 2009 + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <config.h> +#include <common.h> +#include <i2c.h> +#include <asm/types.h> +#include <asm/io.h> +#include <asm/errno.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/hardware.h> +#include <asm/arch/sys_proto.h> +#ifdef CONFIG_MMC +#include "../../../drivers/mmc/arm_pl180_mmci.h" +#endif + +#define NOMADIK_PER4_BASE (0x80150000) +#define NOMADIK_BACKUPRAM0_BASE (NOMADIK_PER4_BASE + 0x00000) +#define NOMADIK_BACKUPRAM1_BASE (NOMADIK_PER4_BASE + 0x01000) + +/* Power, Reset, Clock Management Unit */ +/* + * SVA: Smart Video Accelerator + * SIA: Smart Imaging Accelerator + * SGA: Smart Graphic accelerator + * B2R2: Graphic blitter + */ +#define PRCMU_BASE CFG_PRCMU_BASE /* 0x80157000 for U8500 */ +#define PRCM_ARMCLKFIX_MGT_REG (PRCMU_BASE + 0x000) +#define PRCM_ACLK_MGT_REG (PRCMU_BASE + 0x004) +#define PRCM_SVAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x008) +#define PRCM_SIAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x00C) +#define PRCM_SAAMMDSPCLK_MGT_REG (PRCMU_BASE + 0x010) +#define PRCM_SGACLK_MGT_REG (PRCMU_BASE + 0x014) +#define PRCM_UARTCLK_MGT_REG (PRCMU_BASE + 0x018) +#define PRCM_MSPCLK_MGT_REG (PRCMU_BASE + 0x01C) +#define PRCM_I2CCLK_MGT_REG (PRCMU_BASE + 0x020) +#define PRCM_SDMMCCLK_MGT_REG (PRCMU_BASE + 0x024) +#define PRCM_SLIMCLK_MGT_REG (PRCMU_BASE + 0x028) +#define PRCM_PER1CLK_MGT_REG (PRCMU_BASE + 0x02C) +#define PRCM_PER2CLK_MGT_REG (PRCMU_BASE + 0x030) +#define PRCM_PER3CLK_MGT_REG (PRCMU_BASE + 0x034) +#define PRCM_PER5CLK_MGT_REG (PRCMU_BASE + 0x038) +#define PRCM_PER6CLK_MGT_REG (PRCMU_BASE + 0x03C) +#define PRCM_PER7CLK_MGT_REG (PRCMU_BASE + 0x040) +#define PRCM_DMACLK_MGT_REG (PRCMU_BASE + 0x074) +#define PRCM_B2R2CLK_MGT_REG (PRCMU_BASE + 0x078) + +#define PRCM_PLLSOC0_FREQ_REG (PRCMU_BASE + 0x080) +#define PRCM_PLLSOC1_FREQ_REG (PRCMU_BASE + 0x084) +#define PRCM_PLLARM_FREQ_REG (PRCMU_BASE + 0x088) +#define PRCM_PLLDDR_FREQ_REG (PRCMU_BASE + 0x08C) +#define PRCM_ARM_CHGCLKREQ_REG (PRCMU_BASE + 0x114) + +#define PRCM_TCR (PRCMU_BASE + 0x1C8) + +/* + * Memory controller register + */ +#define DMC_BASE_ADDR 0x80156000 +#define DMC_CTL_97 (DMC_BASE_ADDR + 0x184) + +int board_id; /* set in board_late_init() */ + +/* PLLs for clock management registers */ +enum { + GATED = 0, + PLLSOC0, /* pllsw = 001, ffs() = 1 */ + PLLSOC1, /* pllsw = 010, ffs() = 2 */ + PLLDDR, /* pllsw = 100, ffs() = 3 */ + PLLARM, +}; + +static struct pll_freq_regs { + int idx; /* index fror pll_name and pll_khz arrays */ + uint32_t addr; +} pll_freq_regs[] = { + {PLLSOC0, PRCM_PLLSOC0_FREQ_REG}, + {PLLSOC1, PRCM_PLLSOC1_FREQ_REG}, + {PLLDDR, PRCM_PLLDDR_FREQ_REG}, + {PLLARM, PRCM_PLLARM_FREQ_REG}, + {0, 0}, +}; + +static const char *pll_name[5] = {"GATED", "SOC0", "SOC1", "DDR", "ARM"}; +static uint32_t pll_khz[5]; /* use ffs(pllsw(reg)) as index for 0..3 */ + +static struct clk_mgt_regs { + uint32_t addr; + uint32_t val; + const char *descr; +} clk_mgt_regs[] = { + /* register content taken from bootrom settings */ + {PRCM_ARMCLKFIX_MGT_REG, 0x0120, "ARMCLKFIX"}, /* ena, SOC0/0, ??? */ + {PRCM_ACLK_MGT_REG, 0x0125, "ACLK"}, /* ena, SOC0/5, 160 MHz */ + {PRCM_SVAMMDSPCLK_MGT_REG, 0x1122, "SVA"}, /* ena, SOC0/2, 400 MHz */ + {PRCM_SIAMMDSPCLK_MGT_REG, 0x0022, "SIA"}, /* dis, SOC0/2, 400 MHz */ + {PRCM_SAAMMDSPCLK_MGT_REG, 0x0822, "SAA"}, /* dis, SOC0/4, 200 MHz */ + {PRCM_SGACLK_MGT_REG, 0x0024, "SGA"}, /* dis, SOC0/4, 200 MHz */ + {PRCM_UARTCLK_MGT_REG, 0x0300, "UART"}, /* ena, GATED, CLK38 */ + {PRCM_MSPCLK_MGT_REG, 0x0200, "MSP"}, /* dis, GATED, CLK38 */ + {PRCM_I2CCLK_MGT_REG, 0x0130, "I2C"}, /* ena, SOC0/16, 50 MHz */ + {PRCM_SDMMCCLK_MGT_REG, 0x0130, "SDMMC"}, /* ena, SOC0/16, 50 MHz */ + {PRCM_PER1CLK_MGT_REG, 0x126, "PER1"}, /* ena, SOC0/6, 133 MHz */ + {PRCM_PER2CLK_MGT_REG, 0x126, "PER2"}, /* ena, SOC0/6, 133 MHz */ + {PRCM_PER3CLK_MGT_REG, 0x126, "PER3"}, /* ena, SOC0/6, 133 MHz */ + {PRCM_PER5CLK_MGT_REG, 0x126, "PER5"}, /* ena, SOC0/6, 133 MHz */ + {PRCM_PER6CLK_MGT_REG, 0x126, "PER6"}, /* ena, SOC0/6, 133 MHz */ + {PRCM_PER7CLK_MGT_REG, 0x128, "PER7"}, /* ena, SOC0/8, 100 MHz */ + {PRCM_DMACLK_MGT_REG, 0x125, "DMA"}, /* ena, SOC0/5, 160 MHz */ + {PRCM_B2R2CLK_MGT_REG, 0x025, "B2R2"}, /* dis, SOC0/5, 160 MHz */ + {0, 0, NULL}, +}; + +static void init_regs(void); + +DECLARE_GLOBAL_DATA_PTR; +#if defined(CONFIG_SHOW_BOOT_PROGRESS) +void show_boot_progress(int progress) +{ + printf("Boot reached stage %d\n", progress); +} +#endif + +static unsigned int read_asicid(void) +{ + unsigned int *address = (void *)U8500_BOOTROM_BASE + + U8500_BOOTROM_ASIC_ID_OFFSET; + return readl(address); +} + +int cpu_is_u8500v11(void) +{ + return read_asicid() == 0x008500A1; +} + +/* + * Miscellaneous platform dependent initialisations + */ + +int board_early_init_f(void) +{ + init_regs(); + return 0; +} + +int board_init(void) +{ + uint32_t unused_cols_rows; + unsigned int nrows; + unsigned int ncols; + + gd->bd->bi_arch_number = 0x1A4; + gd->bd->bi_boot_params = 0x00000100; + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; + + /* + * Assumption: 2 CS active, both CS have same layout. + * 15 rows max, 11 cols max (controller spec). + * memory chip has 8 banks, I/O width 32 bit. + * The correct way would be to read MR#8: I/O width and density, + * but this requires locking against the PRCMU firmware. + * Simplified approach: + * Read number of unused rows and columns from mem controller. + * size = nCS x 2^(rows+cols) x nbanks x buswidth_bytes + */ + unused_cols_rows = readl(DMC_CTL_97); + nrows = 15 - (unused_cols_rows & 0x07); + ncols = 11 - ((unused_cols_rows & 0x0700) >> 8); + gd->bd->bi_dram[0].size = 2 * (1 << (nrows + ncols)) * 8 * 4; + + icache_enable(); + + return 0; +} + +int dram_init(void) +{ + gd->ram_size = PHYS_SDRAM_SIZE_1; + + return 0; +} + +unsigned int addr_vall_arr[] = { + 0x8011F000, 0x0000FFFF, /* Clocks for HSI TODO: Enable reqd only */ + 0x8011F008, 0x00001CFF, /* Clocks for HSI TODO: Enable reqd only */ + 0x8000F000, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */ + 0x8000F008, 0x00007FFF, /* Clocks for I2C TODO: Enable reqd only */ + 0x80157020, 0x00000150, /* I2C 48MHz clock */ + 0x8012F000, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */ + 0x8012F008, 0x00007FFF, /* Clocks for SD TODO: Enable reqd only */ + 0xA03DF000, 0x0000000D, /* Clock for MTU Timers */ + 0x8011E00C, 0x00000000, /* GPIO ALT FUNC for EMMC */ + 0x8011E004, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */ + 0x8011E020, 0x0000FFE0, /* GPIO ALT FUNC for EMMC */ + 0x8011E024, 0x00000000, /* GPIO ALT FUNC for EMMC */ + 0x8012E000, 0x20000000, /* GPIO ALT FUNC for UART */ + 0x8012E00C, 0x00000000, /* GPIO ALT FUNC for SD */ + 0x8012E004, 0x0FFC0000, /* GPIO ALT FUNC for SD */ + 0x8012E020, 0x60000000, /* GPIO ALT FUNC for SD */ + 0x8012E024, 0x60000000, /* GPIO ALT FUNC for SD */ + 0x801571E4, 0x0000000C, /* PRCMU settings for B2R2, + PRCM_APE_RESETN_SET_REG */ + 0x80157024, 0x00000130, /* PRCMU settings for EMMC/SD */ + 0xA03FF000, 0x00000003, /* USB */ + 0xA03FF008, 0x00000001, /* USB */ + 0xA03FE00C, 0x00000000, /* USB */ + 0xA03FE020, 0x00000FFF, /* USB */ + 0xA03FE024, 0x00000000 /* USB */ +}; + +#ifdef BOARD_LATE_INIT +#ifdef CONFIG_MMC + +#define LDO_VAUX3_MASK 0x3 +#define LDO_VAUX3_ENABLE 0x1 +#define VAUX3_VOLTAGE_2_9V 0xd + +#define AB8500_REGU_CTRL2 0x4 +#define AB8500_REGU_VRF1VAUX3_REGU_REG 0x040A +#define AB8500_REGU_VRF1VAUX3_SEL_REG 0x0421 + +static int hrefplus_mmc_power_init(void) +{ + int ret; + int val; + + if (!cpu_is_u8500v11()) + return 0; + + /* + * On v1.1 HREF boards (HREF+), Vaux3 needs to be enabled for the SD + * card to work. This is done by enabling the regulators in the AB8500 + * via PRCMU I2C transactions. + * + * This code is derived from the handling of AB8500_LDO_VAUX3 in + * ab8500_ldo_enable() and ab8500_ldo_disable() in Linux. + * + * Turn off and delay is required to have it work across soft reboots. + */ + + ret = prcmu_i2c_read(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG); + if (ret < 0) + goto out; + + val = ret; + + /* Turn off */ + ret = prcmu_i2c_write(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG, + val & ~LDO_VAUX3_MASK); + if (ret < 0) + goto out; + + udelay(10 * 1000); + + /* Set the voltage to 2.9V */ + ret = prcmu_i2c_write(AB8500_REGU_CTRL2, + AB8500_REGU_VRF1VAUX3_SEL_REG, + VAUX3_VOLTAGE_2_9V); + if (ret < 0) + goto out; + + val = val & ~LDO_VAUX3_MASK; + val = val | LDO_VAUX3_ENABLE; + + /* Turn on the supply */ + ret = prcmu_i2c_write(AB8500_REGU_CTRL2, + AB8500_REGU_VRF1VAUX3_REGU_REG, val); + +out: + return ret; +} +#endif +/* + * called after all initialisation were done, but before the generic + * mmc_initialize(). + */ +int board_late_init(void) +{ + uchar byte; + + /* + * Determine and set board_id environment variable + * 0: mop500, 1: href500 + * Above boards have different GPIO expander chips which we can + * distinguish by the chip id. + * + * The board_id environment variable is needed for the Linux bootargs. + */ + (void) i2c_set_bus_num(0); + (void) i2c_read(CONFIG_SYS_I2C_GPIOE_ADDR, 0x80, 1, &byte, 1); + if (byte == 0x01) { + board_id = 0; + setenv("board_id", "0"); + } else { + board_id = 1; + setenv("board_id", "1"); + } +#ifdef CONFIG_MMC + hrefplus_mmc_power_init(); + + /* + * config extended GPIO pins for level shifter and + * SDMMC_ENABLE + */ + if (board_id == 0) { + /* MOP500 */ + byte = 0x0c; + (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x89, 1, &byte, 1); + (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0x83, 1, &byte, 1); + } else { + /* HREF */ + /* set the direction of GPIO KPY9 and KPY10 */ + byte = 0x06; + (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC8, 1, &byte, 1); + /* must be a multibyte access */ + (void) i2c_write(CONFIG_SYS_I2C_GPIOE_ADDR, 0xC4, 1, + (uchar []) {0x06, 0x06}, 2); + } +#endif /* CONFIG_MMC */ + /* + * Create a memargs variable which points uses either the memargs256 or + * memargs512 environment variable, depending on the memory size. + * memargs is used to build the bootargs, memargs256 and memargs512 are + * stored in the environment. + */ + if (gd->bd->bi_dram[0].size == 0x10000000) { + setenv("memargs", "setenv bootargs ${bootargs} ${memargs256}"); + setenv("mem", "256M"); + } else { + setenv("memargs", "setenv bootargs ${bootargs} ${memargs512}"); + setenv("mem", "512M"); + } + + return 0; +} +#endif /* BOARD_LATE_INIT */ + +static void early_gpio_setup(struct gpio_register *gpio_reg, u32 bits) +{ + writel(readl(&gpio_reg->gpio_dats) | bits, &gpio_reg->gpio_dats); + writel(readl(&gpio_reg->gpio_pdis) & ~bits, &gpio_reg->gpio_pdis); +} + +static void init_regs(void) +{ + /* FIXME Remove magic register array settings for ED also */ + struct prcmu *prcmu = (struct prcmu *) U8500_PRCMU_BASE; + + /* Enable timers */ + writel(1 << 17, &prcmu->tcr); + + u8500_prcmu_enable(&prcmu->per1clk_mgt); + u8500_prcmu_enable(&prcmu->per2clk_mgt); + u8500_prcmu_enable(&prcmu->per3clk_mgt); + u8500_prcmu_enable(&prcmu->per5clk_mgt); + u8500_prcmu_enable(&prcmu->per6clk_mgt); + u8500_prcmu_enable(&prcmu->per7clk_mgt); + + u8500_prcmu_enable(&prcmu->uartclk_mgt); + u8500_prcmu_enable(&prcmu->i2cclk_mgt); + + u8500_prcmu_enable(&prcmu->sdmmcclk_mgt); + + u8500_clock_enable(1, 9, -1); /* GPIO0 */ + + u8500_clock_enable(2, 11, -1); /* GPIO1 */ + + u8500_clock_enable(3, 8, -1); /* GPIO2 */ + u8500_clock_enable(5, 1, -1); /* GPIO3 */ + + u8500_clock_enable(3, 6, 6); /* UART2 */ + + gpio_altfuncenable(GPIO_ALT_I2C_0, "I2C0"); + u8500_clock_enable(3, 3, 3); /* I2C0 */ + + early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x60000000); + gpio_altfuncenable(GPIO_ALT_UART_2, "UART2"); + + early_gpio_setup((struct gpio_register *)U8500_GPIO_6_BASE, 0x0000ffe0); + gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC"); + + early_gpio_setup((struct gpio_register *)U8500_GPIO_0_BASE, 0x0000ffe0); + gpio_altfuncenable(GPIO_ALT_SD_CARD0, "SDCARD"); + + u8500_clock_enable(1, 5, 5); /* SDI0 */ + u8500_clock_enable(2, 4, 2); /* SDI4 */ + + u8500_clock_enable(6, 7, -1); /* MTU0 */ + u8500_clock_enable(3, 4, 4); /* SDI2 */ + + early_gpio_setup((struct gpio_register *)U8500_GPIO_4_BASE, 0x000007ff); + gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC"); + + /* + * Enabling clocks for all devices which are AMBA devices in the + * kernel. Otherwise they will not get probe()'d because the + * peripheral ID register will not be powered. + */ + + /* XXX: some of these differ between ED/V1 */ + + u8500_clock_enable(1, 1, 1); /* UART1 */ + u8500_clock_enable(1, 0, 0); /* UART0 */ + + u8500_clock_enable(3, 2, 2); /* SSP1 */ + u8500_clock_enable(3, 1, 1); /* SSP0 */ + + u8500_clock_enable(2, 8, -1); /* SPI0 */ + u8500_clock_enable(2, 5, 3); /* MSP2 */ +} + +#ifdef CONFIG_MMC +static int u8500_mmci_board_init(void) +{ + enum gpio_error error; + struct gpio_register *gpio_base_address; + + gpio_base_address = (void *)(U8500_GPIO_0_BASE); + gpio_base_address->gpio_dats |= 0xFFC0000; + gpio_base_address->gpio_pdis &= ~0xFFC0000; + + /* save the GPIO0 AFSELA register */ + error = gpio_altfuncenable(GPIO_ALT_SD_CARD0, "MMC"); + if (error != GPIO_OK) { + printf("u8500_mmci_board_init() gpio_altfuncenable failed\n"); + return -ENODEV; + } + return 0; +} + +int board_mmc_init(bd_t *bd) +{ + if (u8500_mmci_board_init()) + return -ENODEV; + + if (arm_pl180_mmci_init()) + return -ENODEV; + return 0; +} +#endif + + +/* + * get_pll_freq_khz - return PLL frequency in kHz + */ +static uint32_t get_pll_freq_khz(uint32_t inclk_khz, uint32_t freq_reg) +{ + uint32_t idf, ldf, odf, seldiv, phi; + + /* + * PLLOUTCLK = PHI = (INCLK*LDF)/(2*ODF*IDF) if SELDIV2=0 + * PLLOUTCLK = PHI = (INCLK*LDF)/(4*ODF*IDF) if SELDIV2=1 + * where: + * IDF=R(2:0) (when R=000, IDF=1d) + * LDF = 2*D(7:0) (D must be greater than or equal to 6) + * ODF = N(5:0) (when N=000000, 0DF=1d) + */ + + idf = (freq_reg & 0x70000) >> 16; + ldf = (freq_reg & 0xff) * 2; + odf = (freq_reg & 0x3f00) >> 8; + seldiv = (freq_reg & 0x01000000) >> 24; + phi = (inclk_khz * ldf) / (2 * odf * idf); + if (seldiv) + phi = phi/2; + + return phi; +} + +int do_clkinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + uint32_t inclk_khz; + uint32_t reg, phi; + uint32_t clk_khz; + unsigned int clk_sel; + struct clk_mgt_regs *clks = clk_mgt_regs; + struct pll_freq_regs *plls = pll_freq_regs; + + /* + * Go through list of PLLs. + * Initialise pll out frequency array (pll_khz) and print frequency. + */ + inclk_khz = 38400; /* 38.4 MHz */ + while (plls->addr) { + reg = readl(plls->addr); + phi = get_pll_freq_khz(inclk_khz, reg); + pll_khz[plls->idx] = phi; + printf("%s PLL out frequency: %d.%d Mhz\n", + pll_name[plls->idx], phi/1000, phi % 1000); + plls++; + } + + /* check ARM clock source */ + reg = readl(PRCM_ARM_CHGCLKREQ_REG); + printf("A9 running on %s\n", + (reg & 1) ? "external clock" : "ARM PLL"); + + /* go through list of clk_mgt_reg */ + printf("\n%19s %9s %7s %9s enabled\n", + "name(addr)", "value", "PLL", "CLK[MHz]"); + while (clks->addr) { + reg = readl(clks->addr); + + /* convert bit position into array index */ + clk_sel = ffs((reg >> 5) & 0x7); /* PLLSW[2:0] */ + + if (reg & 0x200) + clk_khz = 38400; /* CLK38 is set */ + else if ((reg & 0x1f) == 0) + /* ARMCLKFIX_MGT is 0x120, e.g. div = 0 ! */ + clk_khz = 0; + else + clk_khz = pll_khz[clk_sel] / (reg & 0x1f); + + printf("%9s(%08x): %08x, %6s, %4d.%03d, %s\n", + clks->descr, clks->addr, reg, pll_name[clk_sel], + clk_khz / 1000, clk_khz % 1000, + (reg & 0x100) ? "ena" : "dis"); + clks++; + } + + return 0; +} + +U_BOOT_CMD( + clkinfo, 1, 1, do_clkinfo, + "print clock info", + "" +); |