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u-boot/board/ti/panda/panda.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Texas Instruments Incorporated, <www.ti.com>
* Steve Sakoman <steve@sakoman.com>
*/
#include <common.h>
#include <init.h>
#include <log.h>
#include <net.h>
#include <serial.h>
#include <asm/global_data.h>
#include <asm/mach-types.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/gpio.h>
#include <env.h>
#include <twl6030.h>
#include "panda_mux_data.h"
#define PANDA_ULPI_PHY_TYPE_GPIO 182
#define PANDA_BOARD_ID_1_GPIO 101
#define PANDA_ES_BOARD_ID_1_GPIO 48
#define PANDA_BOARD_ID_2_GPIO 171
#define PANDA_ES_BOARD_ID_3_GPIO 3
#define PANDA_ES_BOARD_ID_4_GPIO 2
DECLARE_GLOBAL_DATA_PTR;
const struct omap_sysinfo sysinfo = {
"Board: OMAP4 Panda\n"
};
struct omap4_scrm_regs *const scrm = (struct omap4_scrm_regs *)0x4a30a000;
/**
* @brief board_init
*
* @return 0
*/
int board_init(void)
{
gpmc_init();
gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
return 0;
}
#if defined(CONFIG_SPL_OS_BOOT)
int spl_start_uboot(void)
{
/* break into full u-boot on 'c' */
if (serial_tstc() && serial_getc() == 'c')
return 1;
return 0;
}
#endif /* CONFIG_SPL_OS_BOOT */
int board_eth_init(struct bd_info *bis)
{
return 0;
}
/*
* Routine: get_board_revision
* Description: Detect if we are running on a panda revision A1-A6,
* or an ES panda board. This can be done by reading
* the level of GPIOs and checking the processor revisions.
* This should result in:
* Panda 4430:
* GPIO171, GPIO101, GPIO182: 0 1 1 => A1-A5
* GPIO171, GPIO101, GPIO182: 1 0 1 => A6
* Panda ES:
* GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 0 1 1 => B1/B2
* GPIO2, GPIO3, GPIO171, GPIO48, GPIO182: 0 0 1 1 1 => B3
*/
int get_board_revision(void)
{
int board_id0, board_id1, board_id2;
int board_id3, board_id4;
int board_id;
int processor_rev = omap_revision();
/* Setup the mux for the common board ID pins (gpio 171 and 182) */
writew((IEN | M3), (*ctrl)->control_padconf_core_base + UNIPRO_TX0);
writew((IEN | M3), (*ctrl)->control_padconf_core_base + FREF_CLK2_OUT);
board_id0 = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
board_id2 = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
if ((processor_rev >= OMAP4460_ES1_0 &&
processor_rev <= OMAP4460_ES1_1)) {
/*
* Setup the mux for the ES specific board ID pins (gpio 101,
* 2 and 3.
*/
writew((IEN | M3), (*ctrl)->control_padconf_core_base +
GPMC_A24);
writew((IEN | M3), (*ctrl)->control_padconf_core_base +
UNIPRO_RY0);
writew((IEN | M3), (*ctrl)->control_padconf_core_base +
UNIPRO_RX1);
board_id1 = gpio_get_value(PANDA_ES_BOARD_ID_1_GPIO);
board_id3 = gpio_get_value(PANDA_ES_BOARD_ID_3_GPIO);
board_id4 = gpio_get_value(PANDA_ES_BOARD_ID_4_GPIO);
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
env_set("board_name", "panda-es");
#endif
board_id = ((board_id4 << 4) | (board_id3 << 3) |
(board_id2 << 2) | (board_id1 << 1) | (board_id0));
} else {
/* Setup the mux for the Ax specific board ID pins (gpio 101) */
writew((IEN | M3), (*ctrl)->control_padconf_core_base +
FREF_CLK2_OUT);
board_id1 = gpio_get_value(PANDA_BOARD_ID_1_GPIO);
board_id = ((board_id2 << 2) | (board_id1 << 1) | (board_id0));
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
if ((board_id >= 0x3) && (processor_rev == OMAP4430_ES2_3))
env_set("board_name", "panda-a4");
#endif
}
return board_id;
}
/**
* is_panda_es_rev_b3() - Detect if we are running on rev B3 of panda board ES
*
*
* Detect if we are running on B3 version of ES panda board,
* This can be done by reading the level of GPIO 171 and checking the
* processor revisions.
* GPIO171: 1 => Panda ES Rev B3
*
* Return : return 1 if Panda ES Rev B3 , else return 0
*/
u8 is_panda_es_rev_b3(void)
{
int processor_rev = omap_revision();
int ret = 0;
if ((processor_rev >= OMAP4460_ES1_0 &&
processor_rev <= OMAP4460_ES1_1)) {
/* Setup the mux for the common board ID pins (gpio 171) */
writew((IEN | M3),
(*ctrl)->control_padconf_core_base + UNIPRO_TX0);
/* if processor_rev is panda ES and GPIO171 is 1,it is rev b3 */
ret = gpio_get_value(PANDA_BOARD_ID_2_GPIO);
}
return ret;
}
#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
/*
* emif_get_reg_dump() - emif_get_reg_dump strong function
*
* @emif_nr - emif base
* @regs - reg dump of timing values
*
* Strong function to override emif_get_reg_dump weak function in sdram_elpida.c
*/
void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
{
u32 omap4_rev = omap_revision();
/* Same devices and geometry on both EMIFs */
if (omap4_rev == OMAP4430_ES1_0)
*regs = &emif_regs_elpida_380_mhz_1cs;
else if (omap4_rev == OMAP4430_ES2_0)
*regs = &emif_regs_elpida_200_mhz_2cs;
else if (omap4_rev == OMAP4430_ES2_3)
*regs = &emif_regs_elpida_400_mhz_1cs;
else if (omap4_rev < OMAP4470_ES1_0) {
if(is_panda_es_rev_b3())
*regs = &emif_regs_elpida_400_mhz_1cs;
else
*regs = &emif_regs_elpida_400_mhz_2cs;
}
else
*regs = &emif_regs_elpida_400_mhz_1cs;
}
void emif_get_dmm_regs(const struct dmm_lisa_map_regs
**dmm_lisa_regs)
{
u32 omap_rev = omap_revision();
if (omap_rev == OMAP4430_ES1_0)
*dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
else if (omap_rev == OMAP4430_ES2_3)
*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
else if (omap_rev < OMAP4460_ES1_0)
*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
else
*dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
}
#endif
/**
* @brief misc_init_r - Configure Panda board specific configurations
* such as power configurations, ethernet initialization as phase2 of
* boot sequence
*
* @return 0
*/
int misc_init_r(void)
{
int phy_type;
u32 auxclk, altclksrc;
/* EHCI is not supported on ES1.0 */
if (omap_revision() == OMAP4430_ES1_0)
return 0;
get_board_revision();
gpio_direction_input(PANDA_ULPI_PHY_TYPE_GPIO);
phy_type = gpio_get_value(PANDA_ULPI_PHY_TYPE_GPIO);
if (phy_type == 1) {
/* ULPI PHY supplied by auxclk3 derived from sys_clk */
debug("ULPI PHY supplied by auxclk3\n");
auxclk = readl(&scrm->auxclk3);
/* Select sys_clk */
auxclk &= ~AUXCLK_SRCSELECT_MASK;
auxclk |= AUXCLK_SRCSELECT_SYS_CLK << AUXCLK_SRCSELECT_SHIFT;
/* Set the divisor to 2 */
auxclk &= ~AUXCLK_CLKDIV_MASK;
auxclk |= AUXCLK_CLKDIV_2 << AUXCLK_CLKDIV_SHIFT;
/* Request auxilary clock #3 */
auxclk |= AUXCLK_ENABLE_MASK;
writel(auxclk, &scrm->auxclk3);
} else {
/* ULPI PHY supplied by auxclk1 derived from PER dpll */
debug("ULPI PHY supplied by auxclk1\n");
auxclk = readl(&scrm->auxclk1);
/* Select per DPLL */
auxclk &= ~AUXCLK_SRCSELECT_MASK;
auxclk |= AUXCLK_SRCSELECT_PER_DPLL << AUXCLK_SRCSELECT_SHIFT;
/* Set the divisor to 16 */
auxclk &= ~AUXCLK_CLKDIV_MASK;
auxclk |= AUXCLK_CLKDIV_16 << AUXCLK_CLKDIV_SHIFT;
/* Request auxilary clock #3 */
auxclk |= AUXCLK_ENABLE_MASK;
writel(auxclk, &scrm->auxclk1);
}
altclksrc = readl(&scrm->altclksrc);
/* Activate alternate system clock supplier */
altclksrc &= ~ALTCLKSRC_MODE_MASK;
altclksrc |= ALTCLKSRC_MODE_ACTIVE;
/* enable clocks */
altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
writel(altclksrc, &scrm->altclksrc);
omap_die_id_usbethaddr();
return 0;
}
void set_muxconf_regs(void)
{
do_set_mux((*ctrl)->control_padconf_core_base,
core_padconf_array_essential,
sizeof(core_padconf_array_essential) /
sizeof(struct pad_conf_entry));
do_set_mux((*ctrl)->control_padconf_wkup_base,
wkup_padconf_array_essential,
sizeof(wkup_padconf_array_essential) /
sizeof(struct pad_conf_entry));
if (omap_revision() >= OMAP4460_ES1_0)
do_set_mux((*ctrl)->control_padconf_wkup_base,
wkup_padconf_array_essential_4460,
sizeof(wkup_padconf_array_essential_4460) /
sizeof(struct pad_conf_entry));
}
#if defined(CONFIG_MMC)
int board_mmc_init(struct bd_info *bis)
{
return omap_mmc_init(0, 0, 0, -1, -1);
}
#if !defined(CONFIG_SPL_BUILD)
void board_mmc_power_init(void)
{
twl6030_power_mmc_init(0);
}
#endif
#endif
/*
* get_board_rev() - get board revision
*/
u32 get_board_rev(void)
{
return 0x20;
}
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