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author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-11-03 10:05:22 +0100 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-11-03 10:05:22 +0100 |
commit | a42c87f9d831c4eb36104255766cc7897876867c (patch) | |
tree | 90dd6a5dad0e7e290d7df44cff746fb3319b3219 /board/nokia/rx51/rx51.c | |
parent | d598e0fe739e5a75db74cc144beabd09e3c51433 (diff) | |
parent | a956bdcb3ff759f753e3f0c5e40e58f4c3056e22 (diff) | |
download | u-boot-imx-a42c87f9d831c4eb36104255766cc7897876867c.zip u-boot-imx-a42c87f9d831c4eb36104255766cc7897876867c.tar.gz u-boot-imx-a42c87f9d831c4eb36104255766cc7897876867c.tar.bz2 |
Merge remote-tracking branch 'u-boot-ti/master'
Diffstat (limited to 'board/nokia/rx51/rx51.c')
-rw-r--r-- | board/nokia/rx51/rx51.c | 677 |
1 files changed, 677 insertions, 0 deletions
diff --git a/board/nokia/rx51/rx51.c b/board/nokia/rx51/rx51.c new file mode 100644 index 0000000..b2fe1c5 --- /dev/null +++ b/board/nokia/rx51/rx51.c @@ -0,0 +1,677 @@ +/* + * (C) Copyright 2012 + * Ивайло Димитров <freemangordon@abv.bg> + * + * (C) Copyright 2011-2012 + * Pali Rohár <pali.rohar@gmail.com> + * + * (C) Copyright 2010 + * Alistair Buxton <a.j.buxton@gmail.com> + * + * Derived from Beagle Board and 3430 SDP code: + * (C) Copyright 2004-2008 + * Texas Instruments, <www.ti.com> + * + * Author : + * Sunil Kumar <sunilsaini05@gmail.com> + * Shashi Ranjan <shashiranjanmca05@gmail.com> + * + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@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 <watchdog.h> +#include <malloc.h> +#include <twl4030.h> +#include <i2c.h> +#include <video_fb.h> +#include <asm/io.h> +#include <asm/setup.h> +#include <asm/bitops.h> +#include <asm/mach-types.h> +#include <asm/arch/mux.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/mmc_host_def.h> + +#include "rx51.h" +#include "tag_omap.h" + +DECLARE_GLOBAL_DATA_PTR; + +GraphicDevice gdev; + +const omap3_sysinfo sysinfo = { + DDR_STACKED, + "Nokia RX-51", + "OneNAND" +}; + +/* This structure contains default omap tags needed for booting Maemo 5 */ +static struct tag_omap omap[] = { + OMAP_TAG_UART_CONFIG(0x04), + OMAP_TAG_SERIAL_CONSOLE_CONFIG(0x03, 0x01C200), + OMAP_TAG_LCD_CONFIG("acx565akm", "internal", 90, 0x18), + OMAP_TAG_GPIO_SWITCH_CONFIG("cam_focus", 0x44, 0x1, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cam_launch", 0x45, 0x1, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cam_shutter", 0x6e, 0x1, 0x0, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_apeslpx", 0x46, 0x2, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_bsi", 0x9d, 0x2, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_en", 0x4a, 0x2, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst", 0x4b, 0x6, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst_rq", 0x49, 0x6, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_wddis", 0x0d, 0x2, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("headphone", 0xb1, 0x1, 0x1, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("kb_lock", 0x71, 0x1, 0x0, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("proximity", 0x59, 0x0, 0x0, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("sleep_ind", 0xa2, 0x2, 0x2, 0x0), + OMAP_TAG_GPIO_SWITCH_CONFIG("slide", GPIO_SLIDE, 0x0, 0x0, 0x0), + OMAP_TAG_WLAN_CX3110X_CONFIG(0x25, 0xff, 87, 42, -1), + OMAP_TAG_PARTITION_CONFIG(PART1_NAME, PART1_SIZE * PART1_MULL, + PART1_OFFS, PART1_MASK), + OMAP_TAG_PARTITION_CONFIG(PART2_NAME, PART2_SIZE * PART2_MULL, + PART2_OFFS, PART2_MASK), + OMAP_TAG_PARTITION_CONFIG(PART3_NAME, PART3_SIZE * PART3_MULL, + PART3_OFFS, PART3_MASK), + OMAP_TAG_PARTITION_CONFIG(PART4_NAME, PART4_SIZE * PART4_MULL, + PART4_OFFS, PART4_MASK), + OMAP_TAG_PARTITION_CONFIG(PART5_NAME, PART5_SIZE * PART5_MULL, + PART5_OFFS, PART5_MASK), + OMAP_TAG_PARTITION_CONFIG(PART6_NAME, PART6_SIZE * PART6_MULL, + PART6_OFFS, PART6_MASK), + OMAP_TAG_BOOT_REASON_CONFIG("pwr_key"), + OMAP_TAG_VERSION_STR_CONFIG("product", "RX-51"), + OMAP_TAG_VERSION_STR_CONFIG("hw-build", "2101"), + OMAP_TAG_VERSION_STR_CONFIG("nolo", "1.4.14"), + OMAP_TAG_VERSION_STR_CONFIG("boot-mode", "normal"), + { } +}; + +static char *boot_reason_ptr; +static char *hw_build_ptr; +static char *nolo_version_ptr; +static char *boot_mode_ptr; + +/* + * Routine: init_omap_tags + * Description: Initialize pointers to values in tag_omap + */ +static void init_omap_tags(void) +{ + char *component; + char *version; + int i = 0; + while (omap[i].hdr.tag) { + switch (omap[i].hdr.tag) { + case OMAP_TAG_BOOT_REASON: + boot_reason_ptr = omap[i].u.boot_reason.reason_str; + break; + case OMAP_TAG_VERSION_STR: + component = omap[i].u.version.component; + version = omap[i].u.version.version; + if (strcmp(component, "hw-build") == 0) + hw_build_ptr = version; + else if (strcmp(component, "nolo") == 0) + nolo_version_ptr = version; + else if (strcmp(component, "boot-mode") == 0) + boot_mode_ptr = version; + break; + default: + break; + } + i++; + } +} + +static void reuse_omap_atags(struct tag_omap *t) +{ + char *component; + char *version; + while (t->hdr.tag) { + switch (t->hdr.tag) { + case OMAP_TAG_BOOT_REASON: + memset(boot_reason_ptr, 0, 12); + strcpy(boot_reason_ptr, t->u.boot_reason.reason_str); + break; + case OMAP_TAG_VERSION_STR: + component = t->u.version.component; + version = t->u.version.version; + if (strcmp(component, "hw-build") == 0) { + memset(hw_build_ptr, 0, 12); + strcpy(hw_build_ptr, version); + } else if (strcmp(component, "nolo") == 0) { + memset(nolo_version_ptr, 0, 12); + strcpy(nolo_version_ptr, version); + } else if (strcmp(component, "boot-mode") == 0) { + memset(boot_mode_ptr, 0, 12); + strcpy(boot_mode_ptr, version); + } + break; + default: + break; + } + t = tag_omap_next(t); + } +} + +/* + * Routine: reuse_atags + * Description: Reuse atags from previous bootloader. + * Reuse only only HW build, boot reason, boot mode and nolo + */ +static void reuse_atags(void) +{ + struct tag *t = (struct tag *)gd->bd->bi_boot_params; + + /* First tag must be ATAG_CORE */ + if (t->hdr.tag != ATAG_CORE) + return; + + if (!boot_reason_ptr || !hw_build_ptr) + return; + + /* Last tag must be ATAG_NONE */ + while (t->hdr.tag != ATAG_NONE) { + switch (t->hdr.tag) { + case ATAG_REVISION: + memset(hw_build_ptr, 0, 12); + sprintf(hw_build_ptr, "%x", t->u.revision.rev); + break; + case ATAG_BOARD: + reuse_omap_atags((struct tag_omap *)&t->u); + break; + default: + break; + } + t = tag_next(t); + } +} + +/* + * Routine: board_init + * Description: Early hardware init. + */ +int board_init(void) +{ + /* in SRAM or SDRAM, finish GPMC */ + gpmc_init(); + /* boot param addr */ + gd->bd->bi_boot_params = OMAP34XX_SDRC_CS0 + 0x100; + return 0; +} + +/* + * Routine: get_board_revision + * Description: Return board revision. + */ +u32 get_board_rev(void) +{ + return simple_strtol(hw_build_ptr, NULL, 16); +} + +/* + * Routine: setup_board_tags + * Description: Append board specific boot tags. + */ +void setup_board_tags(struct tag **in_params) +{ + int setup_console_atag; + char *setup_boot_reason_atag; + char *setup_boot_mode_atag; + char *str; + int i; + int size; + int total_size; + struct tag *params; + struct tag_omap *t; + + params = (struct tag *)gd->bd->bi_boot_params; + + params->u.core.flags = 0x0; + params->u.core.pagesize = 0x1000; + params->u.core.rootdev = 0x0; + + /* append omap atag only if env setup_omap_atag is set to 1 */ + str = getenv("setup_omap_atag"); + if (!str || str[0] != '1') + return; + + str = getenv("setup_console_atag"); + if (str && str[0] == '1') + setup_console_atag = 1; + else + setup_console_atag = 0; + + setup_boot_reason_atag = getenv("setup_boot_reason_atag"); + setup_boot_mode_atag = getenv("setup_boot_mode_atag"); + + params = *in_params; + t = (struct tag_omap *)¶ms->u; + total_size = sizeof(struct tag_header); + + for (i = 0; omap[i].hdr.tag; i++) { + + /* skip serial console tag */ + if (!setup_console_atag && + omap[i].hdr.tag == OMAP_TAG_SERIAL_CONSOLE) + continue; + + size = omap[i].hdr.size + sizeof(struct tag_omap_header); + memcpy(t, &omap[i], size); + + /* set uart tag to 0 - disable serial console */ + if (!setup_console_atag && omap[i].hdr.tag == OMAP_TAG_UART) + t->u.uart.enabled_uarts = 0; + + /* change boot reason */ + if (setup_boot_reason_atag && + omap[i].hdr.tag == OMAP_TAG_BOOT_REASON) { + memset(t->u.boot_reason.reason_str, 0, 12); + strcpy(t->u.boot_reason.reason_str, + setup_boot_reason_atag); + } + + /* change boot mode */ + if (setup_boot_mode_atag && + omap[i].hdr.tag == OMAP_TAG_VERSION_STR && + strcmp(omap[i].u.version.component, "boot-mode") == 0) { + memset(t->u.version.version, 0, 12); + strcpy(t->u.version.version, setup_boot_mode_atag); + } + + total_size += size; + t = tag_omap_next(t); + + } + + params->hdr.tag = ATAG_BOARD; + params->hdr.size = total_size >> 2; + params = tag_next(params); + + *in_params = params; +} + +/* + * Routine: video_hw_init + * Description: Set up the GraphicDevice depending on sys_boot. + */ +void *video_hw_init(void) +{ + /* fill in Graphic Device */ + gdev.frameAdrs = 0x8f9c0000; + gdev.winSizeX = 800; + gdev.winSizeY = 480; + gdev.gdfBytesPP = 2; + gdev.gdfIndex = GDF_16BIT_565RGB; + memset((void *)gdev.frameAdrs, 0, 0xbb800); + return (void *) &gdev; +} + +/* + * Routine: twl4030_regulator_set_mode + * Description: Set twl4030 regulator mode over i2c powerbus. + */ +static void twl4030_regulator_set_mode(u8 id, u8 mode) +{ + u16 msg = MSG_SINGULAR(DEV_GRP_P1, id, mode); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, msg >> 8, + TWL4030_PM_MASTER_PB_WORD_MSB); + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, msg & 0xff, + TWL4030_PM_MASTER_PB_WORD_LSB); +} + +static void omap3_emu_romcode_call(u32 service_id, u32 *parameters) +{ + u32 i, num_params = *parameters; + u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA; + + /* + * copy the parameters to an un-cached area to avoid coherency + * issues + */ + for (i = 0; i < num_params; i++) { + __raw_writel(*parameters, sram_scratch_space); + parameters++; + sram_scratch_space++; + } + + /* Now make the PPA call */ + do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA); +} + +/* + * Routine: omap3_update_aux_cr_secure_rx51 + * Description: Modify the contents Auxiliary Control Register. + * Parameters: + * set_bits - bits to set in ACR + * clr_bits - bits to clear in ACR + */ +static void omap3_update_aux_cr_secure_rx51(u32 set_bits, u32 clear_bits) +{ + struct emu_hal_params_rx51 emu_romcode_params = { 0, }; + u32 acr; + + /* Read ACR */ + asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr)); + acr &= ~clear_bits; + acr |= set_bits; + + emu_romcode_params.num_params = 2; + emu_romcode_params.param1 = acr; + + omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR, + (u32 *)&emu_romcode_params); +} + +/* + * Routine: misc_init_r + * Description: Configure board specific parts. + */ +int misc_init_r(void) +{ + char buf[12]; + u8 state; + + /* reset lp5523 led */ + i2c_set_bus_num(1); + state = 0xff; + i2c_write(0x32, 0x3d, 1, &state, 1); + i2c_set_bus_num(0); + + /* initialize twl4030 power managment */ + twl4030_power_init(); + + /* set VSIM to 1.8V */ + twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED, + TWL4030_PM_RECEIVER_VSIM_VSEL_18, + TWL4030_PM_RECEIVER_VSIM_DEV_GRP, + TWL4030_PM_RECEIVER_DEV_GRP_P1); + + /* store I2C access state */ + twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, &state, + TWL4030_PM_MASTER_PB_CFG); + + /* enable I2C access to powerbus (needed for twl4030 regulator) */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x02, + TWL4030_PM_MASTER_PB_CFG); + + /* set VAUX3, VSIM and VMMC1 state to active - enable eMMC memory */ + twl4030_regulator_set_mode(RES_VAUX3, RES_STATE_ACTIVE); + twl4030_regulator_set_mode(RES_VSIM, RES_STATE_ACTIVE); + twl4030_regulator_set_mode(RES_VMMC1, RES_STATE_ACTIVE); + + /* restore I2C access state */ + twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, state, + TWL4030_PM_MASTER_PB_CFG); + + /* set env variable attkernaddr for relocated kernel */ + sprintf(buf, "%#x", KERNEL_ADDRESS); + setenv("attkernaddr", buf); + + /* initialize omap tags */ + init_omap_tags(); + + /* reuse atags from previous bootloader */ + reuse_atags(); + + dieid_num_r(); + print_cpuinfo(); + + /* + * Cortex-A8(r1p0..r1p2) errata 430973 workaround + * Set IBE bit in Auxiliary Control Register + */ + omap3_update_aux_cr_secure_rx51(1 << 6, 0); + + return 0; +} + +/* + * Routine: set_muxconf_regs + * Description: Setting up the configuration Mux registers specific to the + * hardware. Many pins need to be moved from protect to primary + * mode. + */ +void set_muxconf_regs(void) +{ + MUX_RX51(); +} + +static unsigned long int twl_wd_time; /* last time of watchdog reset */ +static unsigned long int twl_i2c_lock; + +/* + * Routine: hw_watchdog_reset + * Description: Reset timeout of twl4030 watchdog. + */ +void hw_watchdog_reset(void) +{ + u8 timeout = 0; + + /* do not reset watchdog too often - max every 4s */ + if (get_timer(twl_wd_time) < 4 * CONFIG_SYS_HZ) + return; + + /* localy lock twl4030 i2c bus */ + if (test_and_set_bit(0, &twl_i2c_lock)) + return; + + /* read actual watchdog timeout */ + twl4030_i2c_read_u8(TWL4030_CHIP_PM_RECEIVER, &timeout, + TWL4030_PM_RECEIVER_WATCHDOG_CFG); + + /* timeout 0 means watchdog is disabled */ + /* reset watchdog timeout to 31s (maximum) */ + if (timeout != 0) + twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 31, + TWL4030_PM_RECEIVER_WATCHDOG_CFG); + + /* store last watchdog reset time */ + twl_wd_time = get_timer(0); + + /* localy unlock twl4030 i2c bus */ + test_and_clear_bit(0, &twl_i2c_lock); +} + +/* + * TWL4030 keypad handler for cfb_console + */ + +static const char keymap[] = { + /* normal */ + 'q', 'o', 'p', ',', '\b', 0, 'a', 's', + 'w', 'd', 'f', 'g', 'h', 'j', 'k', 'l', + 'e', '.', 0, '\r', 0, 'z', 'x', 'c', + 'r', 'v', 'b', 'n', 'm', ' ', ' ', 0, + 't', 0, 0, 0, 0, 0, 0, 0, + 'y', 0, 0, 0, 0, 0, 0, 0, + 'u', 0, 0, 0, 0, 0, 0, 0, + 'i', 5, 6, 0, 0, 0, 0, 0, + /* fn */ + '1', '9', '0', '=', '\b', 0, '*', '+', + '2', '#', '-', '_', '(', ')', '&', '!', + '3', '?', '^', '\r', 0, 156, '$', 238, + '4', '/', '\\', '"', '\'', '@', 0, '<', + '5', '|', '>', 0, 0, 0, 0, 0, + '6', 0, 0, 0, 0, 0, 0, 0, + '7', 0, 0, 0, 0, 0, 0, 0, + '8', 16, 17, 0, 0, 0, 0, 0, +}; + +static u8 keys[8]; +static u8 old_keys[8] = {0, 0, 0, 0, 0, 0, 0, 0}; +#define KEYBUF_SIZE 32 +static u8 keybuf[KEYBUF_SIZE]; +static u8 keybuf_head; +static u8 keybuf_tail; + +/* + * Routine: rx51_kp_init + * Description: Initialize HW keyboard. + */ +int rx51_kp_init(void) +{ + int ret = 0; + u8 ctrl; + ret = twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, &ctrl, + TWL4030_KEYPAD_KEYP_CTRL_REG); + + if (ret) + return ret; + + /* turn on keyboard and use hardware scanning */ + ctrl |= TWL4030_KEYPAD_CTRL_KBD_ON; + ctrl |= TWL4030_KEYPAD_CTRL_SOFT_NRST; + ctrl |= TWL4030_KEYPAD_CTRL_SOFTMODEN; + ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, ctrl, + TWL4030_KEYPAD_KEYP_CTRL_REG); + /* enable key event status */ + ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0xfe, + TWL4030_KEYPAD_KEYP_IMR1); + /* enable interrupt generation on rising and falling */ + /* this is a workaround for qemu twl4030 emulation */ + ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0x57, + TWL4030_KEYPAD_KEYP_EDR); + /* enable ISR clear on read */ + ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0x05, + TWL4030_KEYPAD_KEYP_SIH_CTRL); + return 0; +} + +static void rx51_kp_fill(u8 k, u8 mods) +{ + /* check if some cursor key without meta fn key was pressed */ + if (!(mods & 2) && (k == 18 || k == 31 || k == 33 || k == 34)) { + keybuf[keybuf_tail++] = '\e'; + keybuf_tail %= KEYBUF_SIZE; + keybuf[keybuf_tail++] = '['; + keybuf_tail %= KEYBUF_SIZE; + if (k == 18) /* up */ + keybuf[keybuf_tail++] = 'A'; + else if (k == 31) /* left */ + keybuf[keybuf_tail++] = 'D'; + else if (k == 33) /* down */ + keybuf[keybuf_tail++] = 'B'; + else if (k == 34) /* right */ + keybuf[keybuf_tail++] = 'C'; + keybuf_tail %= KEYBUF_SIZE; + return; + } + + if (mods & 2) { /* fn meta key was pressed */ + k = keymap[k+64]; + } else { + k = keymap[k]; + if (mods & 1) { /* ctrl key was pressed */ + if (k >= 'a' && k <= 'z') + k -= 'a' - 1; + } + if (mods & 4) { /* shift key was pressed */ + if (k >= 'a' && k <= 'z') + k += 'A' - 'a'; + else if (k == '.') + k = ':'; + else if (k == ',') + k = ';'; + } + } + keybuf[keybuf_tail++] = k; + keybuf_tail %= KEYBUF_SIZE; +} + +/* + * Routine: rx51_kp_tstc + * Description: Test if key was pressed (from buffer). + */ +int rx51_kp_tstc(void) +{ + u8 c, r, dk, i; + u8 intr; + u8 mods; + + /* localy lock twl4030 i2c bus */ + if (test_and_set_bit(0, &twl_i2c_lock)) + return 0; + + /* twl4030 remembers up to 2 events */ + for (i = 0; i < 2; i++) { + + /* check interrupt register for events */ + twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, &intr, + TWL4030_KEYPAD_KEYP_ISR1+(2*i)); + + /* no event */ + if (!(intr&1)) + continue; + + /* read the key state */ + i2c_read(TWL4030_CHIP_KEYPAD, + TWL4030_KEYPAD_FULL_CODE_7_0, 1, keys, 8); + + /* cut out modifier keys from the keystate */ + mods = keys[4] >> 4; + keys[4] &= 0x0f; + + for (c = 0; c < 8; c++) { + + /* get newly pressed keys only */ + dk = ((keys[c] ^ old_keys[c])&keys[c]); + old_keys[c] = keys[c]; + + /* fill the keybuf */ + for (r = 0; r < 8; r++) { + if (dk&1) + rx51_kp_fill((c*8)+r, mods); + dk = dk >> 1; + } + + } + + } + + /* localy unlock twl4030 i2c bus */ + test_and_clear_bit(0, &twl_i2c_lock); + + return (KEYBUF_SIZE + keybuf_tail - keybuf_head)%KEYBUF_SIZE; +} + +/* + * Routine: rx51_kp_getc + * Description: Get last pressed key (from buffer). + */ +int rx51_kp_getc(void) +{ + keybuf_head %= KEYBUF_SIZE; + while (!rx51_kp_tstc()) + WATCHDOG_RESET(); + return keybuf[keybuf_head++]; +} + +/* + * Routine: board_mmc_init + * Description: Initialize mmc devices. + */ +int board_mmc_init(bd_t *bis) +{ + omap_mmc_init(0, 0, 0); + omap_mmc_init(1, 0, 0); + return 0; +} |