196 lines
4.4 KiB
C
196 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Atmel Corporation
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* Wenyou.Yang <wenyou.yang@atmel.com>
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*/
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#include <common.h>
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#include <debug_uart.h>
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#include <asm/io.h>
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#include <asm/arch/at91_common.h>
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#include <asm/arch/atmel_pio4.h>
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#include <asm/arch/atmel_mpddrc.h>
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#include <asm/arch/atmel_sdhci.h>
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#include <asm/arch/clk.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/sama5d2.h>
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extern void at91_pda_detect(void);
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DECLARE_GLOBAL_DATA_PTR;
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static void board_usb_hw_init(void)
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{
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atmel_pio4_set_pio_output(AT91_PIO_PORTB, 10, 1);
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}
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#ifdef CONFIG_BOARD_LATE_INIT
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int board_late_init(void)
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{
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#ifdef CONFIG_DM_VIDEO
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at91_video_show_board_info();
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#endif
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at91_pda_detect();
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return 0;
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}
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#endif
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#ifdef CONFIG_DEBUG_UART_BOARD_INIT
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static void board_uart1_hw_init(void)
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{
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atmel_pio4_set_a_periph(AT91_PIO_PORTD, 2, ATMEL_PIO_PUEN_MASK); /* URXD1 */
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atmel_pio4_set_a_periph(AT91_PIO_PORTD, 3, 0); /* UTXD1 */
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at91_periph_clk_enable(ATMEL_ID_UART1);
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}
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void board_debug_uart_init(void)
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{
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board_uart1_hw_init();
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}
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#endif
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#ifdef CONFIG_BOARD_EARLY_INIT_F
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int board_early_init_f(void)
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{
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#ifdef CONFIG_DEBUG_UART
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debug_uart_init();
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#endif
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return 0;
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}
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#endif
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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#ifdef CONFIG_CMD_USB
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board_usb_hw_init();
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#endif
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return 0;
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}
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int dram_init(void)
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{
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gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
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CONFIG_SYS_SDRAM_SIZE);
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return 0;
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}
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#define AT24MAC_MAC_OFFSET 0x9a
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#ifdef CONFIG_MISC_INIT_R
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int misc_init_r(void)
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{
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#ifdef CONFIG_I2C_EEPROM
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at91_set_ethaddr(AT24MAC_MAC_OFFSET);
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#endif
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return 0;
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}
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#endif
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/* SPL */
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#ifdef CONFIG_SPL_BUILD
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void spl_board_init(void)
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{
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}
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static void ddrc_conf(struct atmel_mpddrc_config *ddrc)
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{
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ddrc->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR3_SDRAM);
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ddrc->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
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ATMEL_MPDDRC_CR_NR_ROW_14 |
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ATMEL_MPDDRC_CR_CAS_DDR_CAS5 |
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ATMEL_MPDDRC_CR_DIC_DS |
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ATMEL_MPDDRC_CR_DIS_DLL |
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ATMEL_MPDDRC_CR_NB_8BANKS |
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ATMEL_MPDDRC_CR_DECOD_INTERLEAVED |
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ATMEL_MPDDRC_CR_UNAL_SUPPORTED);
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ddrc->rtr = 0x511;
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ddrc->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |
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3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |
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4 << ATMEL_MPDDRC_TPR0_TWR_OFFSET |
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9 << ATMEL_MPDDRC_TPR0_TRC_OFFSET |
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3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET |
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4 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET |
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4 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET |
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4 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET);
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ddrc->tpr1 = (27 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET |
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29 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
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0 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
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3 << ATMEL_MPDDRC_TPR1_TXP_OFFSET);
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ddrc->tpr2 = (0 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET |
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0 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
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0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
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4 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
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7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET);
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}
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void mem_init(void)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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struct atmel_mpddr *mpddrc = (struct atmel_mpddr *)ATMEL_BASE_MPDDRC;
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struct atmel_mpddrc_config ddrc_config;
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u32 reg;
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ddrc_conf(&ddrc_config);
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at91_periph_clk_enable(ATMEL_ID_MPDDRC);
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writel(AT91_PMC_DDR, &pmc->scer);
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reg = readl(&mpddrc->io_calibr);
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reg &= ~ATMEL_MPDDRC_IO_CALIBR_RDIV;
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reg |= ATMEL_MPDDRC_IO_CALIBR_DDR3_RZQ_55;
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reg &= ~ATMEL_MPDDRC_IO_CALIBR_TZQIO;
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reg |= ATMEL_MPDDRC_IO_CALIBR_TZQIO_(100);
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writel(reg, &mpddrc->io_calibr);
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writel(ATMEL_MPDDRC_RD_DATA_PATH_SHIFT_TWO_CYCLE,
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&mpddrc->rd_data_path);
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ddr3_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddrc_config);
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writel(0x3, &mpddrc->cal_mr4);
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writel(64, &mpddrc->tim_cal);
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}
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void at91_pmc_init(void)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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u32 tmp;
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/*
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* while coming from the ROM code, we run on PLLA @ 492 MHz / 164 MHz
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* so we need to slow down and configure MCKR accordingly.
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* This is why we have a special flavor of the switching function.
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*/
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tmp = AT91_PMC_MCKR_PLLADIV_2 |
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AT91_PMC_MCKR_MDIV_3 |
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AT91_PMC_MCKR_CSS_MAIN;
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at91_mck_init_down(tmp);
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tmp = AT91_PMC_PLLAR_29 |
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AT91_PMC_PLLXR_PLLCOUNT(0x3f) |
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AT91_PMC_PLLXR_MUL(82) |
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AT91_PMC_PLLXR_DIV(1);
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at91_plla_init(tmp);
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writel(0x0 << 8, &pmc->pllicpr);
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tmp = AT91_PMC_MCKR_H32MXDIV |
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AT91_PMC_MCKR_PLLADIV_2 |
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AT91_PMC_MCKR_MDIV_3 |
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AT91_PMC_MCKR_CSS_PLLA;
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at91_mck_init(tmp);
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}
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#endif
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