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/*
* (C) Copyright 2012
* Corscience GmbH & Co. KG, <www.corscience.de>
* Thomas Weber <weber@corscience.de>
* Sunil Kumar <sunilsaini05@gmail.com>
* Shashi Ranjan <shashiranjanmca05@gmail.com>
*
* Derived from Devkit8000 code by
* Frederik Kriewitz <frederik@kriewitz.eu>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <twl4030.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mem.h>
#include "tricorder.h"
#include "tricorder-eeprom.h"
DECLARE_GLOBAL_DATA_PTR;
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init(void)
{
gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
return 0;
}
/**
* get_eeprom - read the eeprom
*
* @eeprom - pointer to a eeprom struct to fill
*
* This function will panic() on wrong EEPROM content
*/
static void get_eeprom(struct tricorder_eeprom *eeprom)
{
int ret;
if (!eeprom)
panic("No eeprom given!\n");
ret = gpio_request(7, "BMS");
if (ret)
panic("gpio: requesting BMS pin failed\n");
ret = gpio_direction_input(7);
if (ret)
panic("gpio: set BMS as input failed\n");
ret = gpio_get_value(7);
if (ret < 0)
panic("gpio: get BMS pin state failed\n");
gpio_free(7);
if (ret == 0) {
/* BMS is _not_ set, do the EEPROM check */
ret = tricorder_get_eeprom(0x51, eeprom);
if (!ret) {
if (strncmp(eeprom->board_name, "CS10411", 7) != 0)
panic("Wrong board name '%.*s'\n",
sizeof(eeprom->board_name),
eeprom->board_name);
if (eeprom->board_version[0] < 'D')
panic("Wrong board version '%.*s'\n",
sizeof(eeprom->board_version),
eeprom->board_version);
} else {
panic("Could not get board revision\n");
}
} else {
memset(eeprom, 0, TRICORDER_EEPROM_SIZE);
}
}
/**
* print_hwversion - print out a HW version string
*
* @eeprom - pointer to the eeprom
*/
static void print_hwversion(struct tricorder_eeprom *eeprom)
{
size_t len;
if (!eeprom)
panic("No eeprom given!");
printf("Board %.*s:%.*s serial %.*s",
sizeof(eeprom->board_name), eeprom->board_name,
sizeof(eeprom->board_version), eeprom->board_version,
sizeof(eeprom->board_serial), eeprom->board_serial);
len = strnlen(eeprom->interface_version,
sizeof(eeprom->interface_version));
if (len > 0)
printf(" HW interface version %.*s",
sizeof(eeprom->interface_version),
eeprom->interface_version);
puts("\n");
}
/*
* Routine: misc_init_r
* Description: Configure board specific parts
*/
int misc_init_r(void)
{
struct tricorder_eeprom eeprom;
get_eeprom(&eeprom);
print_hwversion(&eeprom);
twl4030_power_init();
status_led_set(0, STATUS_LED_ON);
status_led_set(1, STATUS_LED_ON);
status_led_set(2, STATUS_LED_ON);
dieid_num_r();
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_TRICORDER();
}
#if defined(CONFIG_GENERIC_MMC) && !(defined(CONFIG_SPL_BUILD))
int board_mmc_init(bd_t *bis)
{
return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif
/*
* Routine: get_board_mem_timings
* Description: If we use SPL then there is no x-loader nor config header
* so we have to setup the DDR timings ourself on the first bank. This
* provides the timing values back to the function that configures
* the memory. We have either one or two banks of 128MB DDR.
*/
void get_board_mem_timings(struct board_sdrc_timings *timings)
{
struct tricorder_eeprom eeprom;
get_eeprom(&eeprom);
/* General SDRC config */
if (eeprom.board_version[0] > 'D') {
/* use optimized timings for our SDRAM device */
timings->mcfg = MCFG((256 << 20), 14);
#define MT46H64M32_TDAL 6 /* Twr/Tck + Trp/tck */
/* 15/6 + 18/6 = 5.5 -> 6 */
#define MT46H64M32_TDPL 3 /* 15/6 = 2.5 -> 3 (Twr) */
#define MT46H64M32_TRRD 2 /* 12/6 = 2 */
#define MT46H64M32_TRCD 3 /* 18/6 = 3 */
#define MT46H64M32_TRP 3 /* 18/6 = 3 */
#define MT46H64M32_TRAS 7 /* 42/6 = 7 */
#define MT46H64M32_TRC 10 /* 60/6 = 10 */
#define MT46H64M32_TRFC 12 /* 72/6 = 12 */
timings->ctrla = ACTIM_CTRLA(MT46H64M32_TRFC, MT46H64M32_TRC,
MT46H64M32_TRAS, MT46H64M32_TRP,
MT46H64M32_TRCD, MT46H64M32_TRRD,
MT46H64M32_TDPL,
MT46H64M32_TDAL);
#define MT46H64M32_TWTR 1
#define MT46H64M32_TCKE 1
#define MT46H64M32_XSR 19 /* 112.5/6 = 18.75 => ~19 */
#define MT46H64M32_TXP 1
timings->ctrlb = ACTIM_CTRLB(MT46H64M32_TWTR, MT46H64M32_TCKE,
MT46H64M32_TXP, MT46H64M32_XSR);
timings->mr = MICRON_V_MR_165;
timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
} else {
/* use conservative beagleboard timings as default */
timings->mcfg = MICRON_V_MCFG_165(128 << 20);
timings->ctrla = MICRON_V_ACTIMA_165;
timings->ctrlb = MICRON_V_ACTIMB_165;
timings->mr = MICRON_V_MR_165;
timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
}
}
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