diff options
Diffstat (limited to 'src/cpu/samsung/exynos5-common/spl_boot.c')
| -rw-r--r-- | src/cpu/samsung/exynos5-common/spl_boot.c | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/src/cpu/samsung/exynos5-common/spl_boot.c b/src/cpu/samsung/exynos5-common/spl_boot.c deleted file mode 100644 index ddf69372ef..0000000000 --- a/src/cpu/samsung/exynos5-common/spl_boot.c +++ /dev/null @@ -1,447 +0,0 @@ -/* - * Copyright (C) 2011 Samsung Electronics - * - * 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 - */ - -/* FIXME(dhendrix): pulled in a lot of extra crap such as partition and string - libs*/ -#include <assert.h> -#include <common.h> -#include <stdlib.h> -#include <string.h> - -#include <console/console.h> -#include <console/loglevel.h> -//#include <asm/arch/board.h> - -#include <config.h> -#include <spi.h> -#if 0 -#include <asm/arch/clock.h> -#include <asm/arch-exynos/spi.h> -#include <asm/arch/pinmux.h> -#include <asm/arch/power.h> -#endif -#include <arch/hlt.h> -#include <cpu/samsung/exynos5250/clk.h> -#include <cpu/samsung/exynos5250/cpu.h> -#include <cpu/samsung/exynos5250/periph.h> -#include <cpu/samsung/exynos5250/pinmux.h> -#include <cpu/samsung/exynos5250/power.h> -#include <cpu/samsung/exynos5250/spi.h> - -#include <cpu/samsung/exynos5-common/cpu.h> -#include <cpu/samsung/exynos5-common/exynos5-common.h> - -//#include <asm/system.h> -#include <system.h> - -#include <arch/io.h> - -#define OM_STAT (0x1f << 1) - -/** - * Copy data from SD or MMC device to RAM. - * - * @param offset Block offset of the data - * @param nblock Number of blocks - * @param dst Destination address - * @return 1 = True or 0 = False - */ -typedef u32 (*mmc_copy_func_t)(u32 offset, u32 nblock, u32 dst); - -/** - * Copy data from SPI flash to RAM. - * - * @param offset Block offset of the data - * @param nblock Number of blocks - * @param dst Destination address - * @return 1 = True or 0 = False - */ -typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst); - - -/** - * Copy data through USB. - * - * @return 1 = True or 0 = False - */ -typedef u32 (*usb_copy_func_t)(void); - -/* - * Set/clear program flow prediction and return the previous state. - */ -static int config_branch_prediction(int set_cr_z) -{ - unsigned int cr; - - /* System Control Register: 11th bit Z Branch prediction enable */ - cr = get_cr(); - set_cr(set_cr_z ? cr | CR_Z : cr & ~CR_Z); - - return cr & CR_Z; -} - -#if 0 -static void spi_rx_tx(struct exynos_spi *regs, int todo, - void *dinp, void const *doutp, int i) -{ - uint *rxp = (uint *)(dinp + (i * (32 * 1024))); - int rx_lvl, tx_lvl; - uint out_bytes, in_bytes; - - out_bytes = in_bytes = todo; - setbits_le32(®s->ch_cfg, SPI_CH_RST); - clrbits_le32(®s->ch_cfg, SPI_CH_RST); - writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, ®s->pkt_cnt); - - while (in_bytes) { - uint32_t spi_sts; - int temp; - - spi_sts = readl(®s->spi_sts); - rx_lvl = ((spi_sts >> 15) & 0x7f); - tx_lvl = ((spi_sts >> 6) & 0x7f); - while (tx_lvl < 32 && out_bytes) { - temp = 0xffffffff; - writel(temp, ®s->tx_data); - out_bytes -= 4; - tx_lvl += 4; - } - while (rx_lvl >= 4 && in_bytes) { - temp = readl(®s->rx_data); - if (rxp) - *rxp++ = temp; - in_bytes -= 4; - rx_lvl -= 4; - } - } -} -#endif - -/* FIXME(dhendrix): feels like exynos_spi_copy should go somewhere else... */ -#if 0 -/** - * Copy uboot from spi flash to RAM - * - * @parma uboot_size size of u-boot to copy - */ -static void exynos_spi_copy(unsigned int uboot_size) -{ - int upto, todo; - int i; -// struct exynos_spi *regs = (struct exynos_spi *)samsung_get_base_spi1(); - struct exynos_spi *regs = (struct exynos_spi *)0x12d30000; - - clock_set_rate(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */ - /* set the spi1 GPIO */ - exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE); - - /* set pktcnt and enable it */ - writel(4 | SPI_PACKET_CNT_EN, ®s->pkt_cnt); - /* set FB_CLK_SEL */ - writel(SPI_FB_DELAY_180, ®s->fb_clk); - /* set CH_WIDTH and BUS_WIDTH as word */ - setbits_le32(®s->mode_cfg, SPI_MODE_CH_WIDTH_WORD | - SPI_MODE_BUS_WIDTH_WORD); - clrbits_le32(®s->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */ - - /* clear rx and tx channel if set priveously */ - clrbits_le32(®s->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON); - - setbits_le32(®s->swap_cfg, SPI_RX_SWAP_EN | - SPI_RX_BYTE_SWAP | - SPI_RX_HWORD_SWAP); - - /* do a soft reset */ - setbits_le32(®s->ch_cfg, SPI_CH_RST); - clrbits_le32(®s->ch_cfg, SPI_CH_RST); - - /* now set rx and tx channel ON */ - setbits_le32(®s->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN); - clrbits_le32(®s->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */ - - /* Send read instruction (0x3h) followed by a 24 bit addr */ - writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, ®s->tx_data); - - /* waiting for TX done */ - while (!(readl(®s->spi_sts) & SPI_ST_TX_DONE)); - - for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) { - todo = MIN(uboot_size - upto, (1 << 15)); - spi_rx_tx(regs, todo, (void *)(CONFIG_SYS_TEXT_BASE), - (void *)(SPI_FLASH_UBOOT_POS), i); - } - - setbits_le32(®s->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */ - - /* - * Let put controller mode to BYTE as - * SPI driver does not support WORD mode yet - */ - clrbits_le32(®s->mode_cfg, SPI_MODE_CH_WIDTH_WORD | - SPI_MODE_BUS_WIDTH_WORD); - writel(0, ®s->swap_cfg); - - /* - * Flush spi tx, rx fifos and reset the SPI controller - * and clear rx/tx channel - */ - clrsetbits_le32(®s->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST); - clrbits_le32(®s->ch_cfg, SPI_CH_RST); - clrbits_le32(®s->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON); -} -#endif - -/* Copy U-Boot image to RAM */ -static void copy_uboot_to_ram(void) -{ - unsigned int sec_boot_check; - unsigned int uboot_size = CONFIG_COREBOOT_ROMSIZE_KB_4096; - int is_cr_z_set; - enum boot_mode boot_mode = BOOT_MODE_OM; - mmc_copy_func_t mmc_copy; - - usb_copy_func_t usb_copy; - -#if 0 - uboot_size = exynos_get_uboot_size(); - boot_mode = exynos_get_boot_device(); -#endif - - if (boot_mode == BOOT_MODE_OM) { - /* Read iRAM location to check for secondary USB boot mode */ - sec_boot_check = readl(EXYNOS_IRAM_SECONDARY_BASE); - if (sec_boot_check == EXYNOS_USB_SECONDARY_BOOT) - boot_mode = BOOT_MODE_USB; - } - debug("U-Boot size %u\n", uboot_size); - - if (boot_mode == BOOT_MODE_OM) - boot_mode = readl(EXYNOS_POWER_BASE) & OM_STAT; - - switch (boot_mode) { -#if defined(CONFIG_EXYNOS_SPI_BOOT) - case BOOT_MODE_SERIAL: - /* let us our own function to copy u-boot from SF */ - exynos_spi_copy(uboot_size); - break; -#endif - case BOOT_MODE_MMC: - mmc_copy = *(mmc_copy_func_t *)EXYNOS_COPY_MMC_FNPTR_ADDR; - assert(!(uboot_size & 511)); - mmc_copy(BL2_START_OFFSET, uboot_size / 512, - CONFIG_SYS_TEXT_BASE); - break; - case BOOT_MODE_USB: - /* - * iROM needs program flow prediction to be disabled - * before copy from USB device to RAM - */ - is_cr_z_set = config_branch_prediction(0); - usb_copy = *(usb_copy_func_t *) - EXYNOS_COPY_USB_FNPTR_ADDR; - usb_copy(); - config_branch_prediction(is_cr_z_set); - break; - default: - printk(BIOS_ERR, "Invalid boot mode selection\n"); - hlt(); - break; - } - debug("U-Boot copied\n"); -} - -#if 0 -/** - * Set up the U-Boot global_data pointer - * - * This sets the address of the global data, and sets up basic values. - * - * @param gdp Value to give to gd - */ -static void setup_global_data(gd_t *gdp) -{ - gd = gdp; - memzero((void *)gd, sizeof(gd_t)); - gd->flags |= GD_FLG_RELOC; - gd->baudrate = CONFIG_BAUDRATE; - gd->have_console = 1; -} -#endif - -#if 0 -/* Tell the loaded U-Boot that it was loaded from SPL */ -static void exynos5_set_spl_marker(void) -{ - uint32_t *marker = (uint32_t *)CONFIG_SPL_MARKER; - - *marker = EXYNOS5_SPL_MARKER; -} -#endif - -/* Board-specific call to see if wakeup is allowed. */ -static int __def_board_wakeup_permitted(void) -{ - return 1; -} -int board_wakeup_permitted(void) - __attribute__((weak, alias("__def_board_wakeup_permitted"))); - -void board_init_f(void) -{ - /* - * The gd struct is only needed for serial initialization. Since this - * function is called in SPL u-boot. We store the gd struct in the - * stack instead of the default memory region which may not be - * initialized. - */ -// __attribute__((aligned(8))) gd_t local_gd; -// __attribute__((noreturn)) void (*uboot)(void); - -// exynos5_set_spl_marker(); -// setup_global_data(&local_gd); - - /* - * Init subsystems, and resume if required. For a normal boot this - * will set up the UART and display a message. - */ - if (lowlevel_init_subsystems()) { - if (!board_wakeup_permitted()) - power_reset(); - power_exit_wakeup(); - } - -// printk(BIOS_INFO, "\n\nU-Boot SPL, board rev %u\n", board_get_revision()); - - copy_uboot_to_ram(); - /* Jump to U-Boot image */ -// uboot = (void *)CONFIG_SYS_TEXT_BASE; -// uboot(); - /* Never returns Here */ -// printk(BIOS_ERR, "%s: u-boot jump failed", __func__); - printk(BIOS_INFO, "%s: we should not be here...", __func__); - hlt(); -} - -//void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {} - -#if 0 -/* - * The following functions are required when linking console library to SPL. - * - * Enabling UART in SPL u-boot requires console library. But some - * functions we needed in the console library depends on a bunch - * of library in libgeneric, like lib/ctype.o, lib/div64.o, lib/string.o, - * and lib/vsprintf.o. Adding them makes the SPL u-boot too large and not - * fit into the expected size. - * - * So we mock these functions in SPL, i.e. vsprintf(), panic(), etc., - * in order to cut its dependency. - */ -int vsprintf(char *buf, const char *fmt, va_list args) -{ - char *str = buf, *s; - ulong u; - - /* - * We won't implement all full functions of vsprintf(). - * We only implement %s and %u, and ignore others and directly use - * the original format string as its result. - */ - - while (*fmt) { - if (*fmt != '%') { - *str++ = *fmt++; - continue; - } - fmt++; - switch (*fmt) { - case '%': - *str++ = *fmt++; - break; - case 's': - fmt++; - s = va_arg(args, char *); - while (*s) - *str++ = *s++; - break; - case 'u': - fmt++; - u = va_arg(args, ulong); - s = simple_itoa(u); - while (*s) - *str++ = *s++; - break; - default: - /* Print the original string for unsupported formats */ - *str++ = '%'; - *str++ = *fmt++; - } - } - *str = '\0'; - return str - buf; -} -#endif - -#if 0 -void panic(const char *fmt, ...) -{ - va_list args; - va_start(args, fmt); - vprintf(fmt, args); - putc('\n'); - va_end(args); -#if defined(CONFIG_PANIC_HANG) - hang(); -#else - udelay(100000); /* allow messages to go out */ - do_reset(NULL, 0, 0, NULL); -#endif - while (1) - ; -} -#endif - -#if 0 -void __assert_fail(const char *assertion, const char *file, unsigned line, - const char *function) -{ - /* This will not return */ - panic("%s:%u: %s: Assertion `%s' failed.", file, line, function, - assertion); -} -#endif - -#if 0 -char *simple_itoa(ulong i) -{ - /* 21 digits plus null terminator, good for 64-bit or smaller ints */ - static char local[22] __attribute__((section(".data"))); - char *p = &local[21]; - - *p-- = '\0'; - do { - *p-- = '0' + i % 10; - i /= 10; - } while (i > 0); - return p + 1; -} -#endif |