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u-boot/board/atmel/sama5d3xek/sama5d3xek.c
Wenyou Yang 098d15bc77 board: sama5d3xek: Enable early debug UART 
Enable the early debug UART to debug problems when an ICE or other
debug mechanism is not available.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
2017-04-14 20:10:35 -06:00

354 lines
9.3 KiB
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/*
* Copyright (C) 2012 - 2013 Atmel Corporation
* Bo Shen <voice.shen@atmel.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/sama5d3_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/clk.h>
#include <debug_uart.h>
#include <lcd.h>
#include <linux/ctype.h>
#include <atmel_hlcdc.h>
#include <phy.h>
#include <micrel.h>
#include <spl.h>
#include <asm/arch/atmel_mpddrc.h>
#include <asm/arch/at91_wdt.h>
DECLARE_GLOBAL_DATA_PTR;
/* ------------------------------------------------------------------------- */
/*
* Miscelaneous platform dependent initialisations
*/
#ifdef CONFIG_NAND_ATMEL
void sama5d3xek_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
at91_periph_clk_enable(ATMEL_ID_SMC);
/* Configure SMC CS3 for NAND/SmartMedia */
writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(1) |
AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(1),
&smc->cs[3].setup);
writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(5) |
AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(5),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(8) | AT91_SMC_CYCLE_NRD(8),
&smc->cs[3].cycle);
writel(AT91_SMC_TIMINGS_TCLR(3) | AT91_SMC_TIMINGS_TADL(10) |
AT91_SMC_TIMINGS_TAR(3) | AT91_SMC_TIMINGS_TRR(4) |
AT91_SMC_TIMINGS_TWB(5) | AT91_SMC_TIMINGS_RBNSEL(3)|
AT91_SMC_TIMINGS_NFSEL(1), &smc->cs[3].timings);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
#ifdef CONFIG_SYS_NAND_DBW_16
AT91_SMC_MODE_DBW_16 |
#else /* CONFIG_SYS_NAND_DBW_8 */
AT91_SMC_MODE_DBW_8 |
#endif
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
}
#endif
#ifdef CONFIG_MTD_NOR_FLASH
static void sama5d3xek_nor_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
at91_periph_clk_enable(ATMEL_ID_SMC);
/* Configure SMC CS0 for NOR flash */
writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
&smc->cs[0].setup);
writel(AT91_SMC_PULSE_NWE(10) | AT91_SMC_PULSE_NCS_WR(11) |
AT91_SMC_PULSE_NRD(10) | AT91_SMC_PULSE_NCS_RD(11),
&smc->cs[0].pulse);
writel(AT91_SMC_CYCLE_NWE(11) | AT91_SMC_CYCLE_NRD(14),
&smc->cs[0].cycle);
writel(AT91_SMC_TIMINGS_TCLR(0) | AT91_SMC_TIMINGS_TADL(0) |
AT91_SMC_TIMINGS_TAR(0) | AT91_SMC_TIMINGS_TRR(0) |
AT91_SMC_TIMINGS_TWB(0) | AT91_SMC_TIMINGS_RBNSEL(0)|
AT91_SMC_TIMINGS_NFSEL(0), &smc->cs[0].timings);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
AT91_SMC_MODE_DBW_16 |
AT91_SMC_MODE_TDF_CYCLE(1),
&smc->cs[0].mode);
/* Address pin (A1 ~ A23) configuration */
at91_pio3_set_a_periph(AT91_PIO_PORTE, 1, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 2, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 3, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 4, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 5, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 6, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 7, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 8, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 9, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 10, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 11, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 12, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 13, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 14, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 15, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 16, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 17, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 18, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 19, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 20, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 21, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 22, 0);
at91_pio3_set_a_periph(AT91_PIO_PORTE, 23, 0);
/* CS0 pin configuration */
at91_pio3_set_a_periph(AT91_PIO_PORTE, 26, 0);
}
#endif
#ifdef CONFIG_CMD_USB
static void sama5d3xek_usb_hw_init(void)
{
at91_set_pio_output(AT91_PIO_PORTD, 25, 0);
at91_set_pio_output(AT91_PIO_PORTD, 26, 0);
at91_set_pio_output(AT91_PIO_PORTD, 27, 0);
}
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
static void sama5d3xek_mci_hw_init(void)
{
at91_set_pio_output(AT91_PIO_PORTB, 10, 0); /* MCI0 Power */
}
#endif
#ifdef CONFIG_LCD
vidinfo_t panel_info = {
.vl_col = 800,
.vl_row = 480,
.vl_clk = 24000000,
.vl_bpix = LCD_BPP,
.vl_tft = 1,
.vl_hsync_len = 128,
.vl_left_margin = 64,
.vl_right_margin = 64,
.vl_vsync_len = 2,
.vl_upper_margin = 22,
.vl_lower_margin = 21,
.mmio = ATMEL_BASE_LCDC,
};
void lcd_enable(void)
{
}
void lcd_disable(void)
{
}
static void sama5d3xek_lcd_hw_init(void)
{
gd->fb_base = CONFIG_SAMA5D3_LCD_BASE;
/* The higher 8 bit of LCD is board related */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 14, 0); /* LCDD16 */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 13, 0); /* LCDD17 */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 12, 0); /* LCDD18 */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 11, 0); /* LCDD19 */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 10, 0); /* LCDD20 */
at91_pio3_set_c_periph(AT91_PIO_PORTC, 15, 0); /* LCDD21 */
at91_pio3_set_c_periph(AT91_PIO_PORTE, 27, 0); /* LCDD22 */
at91_pio3_set_c_periph(AT91_PIO_PORTE, 28, 0); /* LCDD23 */
/* Configure lower 16 bit of LCD and enable clock */
at91_lcd_hw_init();
}
#ifdef CONFIG_LCD_INFO
#include <nand.h>
#include <version.h>
void lcd_show_board_info(void)
{
ulong dram_size;
uint64_t nand_size;
int i;
char temp[32];
lcd_printf("%s\n", U_BOOT_VERSION);
lcd_printf("(C) 2013 ATMEL Corp\n");
lcd_printf("at91@atmel.com\n");
lcd_printf("%s CPU at %s MHz\n", get_cpu_name(),
strmhz(temp, get_cpu_clk_rate()));
dram_size = 0;
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
dram_size += gd->bd->bi_dram[i].size;
nand_size = 0;
#ifdef CONFIG_NAND_ATMEL
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
nand_size += nand_info[i]->size;
#endif
lcd_printf("%ld MB SDRAM, %lld MB NAND\n",
dram_size >> 20, nand_size >> 20);
}
#endif /* CONFIG_LCD_INFO */
#endif /* CONFIG_LCD */
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
at91_seriald_hw_init();
}
#endif
#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f(void)
{
#ifdef CONFIG_DEBUG_UART
debug_uart_init();
#endif
return 0;
}
#endif
int board_init(void)
{
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_NAND_ATMEL
sama5d3xek_nand_hw_init();
#endif
#ifdef CONFIG_MTD_NOR_FLASH
sama5d3xek_nor_hw_init();
#endif
#ifdef CONFIG_CMD_USB
sama5d3xek_usb_hw_init();
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
sama5d3xek_mci_hw_init();
#endif
#ifdef CONFIG_LCD
if (has_lcdc())
sama5d3xek_lcd_hw_init();
#endif
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
const int MAX_STR_LEN = 32;
char name[MAX_STR_LEN], *p;
int i;
strncpy(name, get_cpu_name(), MAX_STR_LEN);
for (i = 0, p = name; (*p) && (i < MAX_STR_LEN); p++, i++)
*p = tolower(*p);
strcat(name, "ek.dtb");
setenv("dtb_name", name);
#endif
return 0;
}
#endif
/* SPL */
#ifdef CONFIG_SPL_BUILD
void spl_board_init(void)
{
#if CONFIG_SYS_USE_NANDFLASH
sama5d3xek_nand_hw_init();
#endif
}
static void ddr2_conf(struct atmel_mpddrc_config *ddr2)
{
ddr2->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM);
ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
ATMEL_MPDDRC_CR_NR_ROW_14 |
ATMEL_MPDDRC_CR_CAS_DDR_CAS3 |
ATMEL_MPDDRC_CR_ENRDM_ON |
ATMEL_MPDDRC_CR_NB_8BANKS |
ATMEL_MPDDRC_CR_NDQS_DISABLED |
ATMEL_MPDDRC_CR_DECOD_INTERLEAVED |
ATMEL_MPDDRC_CR_UNAL_SUPPORTED);
/*
* As the DDR2-SDRAm device requires a refresh time is 7.8125us
* when DDR run at 133MHz, so it needs (7.8125us * 133MHz / 10^9) clocks
*/
ddr2->rtr = 0x411;
ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET |
8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET |
2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET);
ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET |
200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
28 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
26 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET);
ddr2->tpr2 = (7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET |
2 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
2 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
7 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
8 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET);
}
void mem_init(void)
{
struct atmel_mpddrc_config ddr2;
ddr2_conf(&ddr2);
/* Enable MPDDR clock */
at91_periph_clk_enable(ATMEL_ID_MPDDRC);
at91_system_clk_enable(AT91_PMC_DDR);
/* DDRAM2 Controller initialize */
ddr2_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddr2);
}
void at91_pmc_init(void)
{
u32 tmp;
tmp = AT91_PMC_PLLAR_29 |
AT91_PMC_PLLXR_PLLCOUNT(0x3f) |
AT91_PMC_PLLXR_MUL(43) |
AT91_PMC_PLLXR_DIV(1);
at91_plla_init(tmp);
at91_pllicpr_init(AT91_PMC_IPLL_PLLA(0x3));
tmp = AT91_PMC_MCKR_MDIV_4 |
AT91_PMC_MCKR_CSS_PLLA;
at91_mck_init(tmp);
}
#endif
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