diff options
Diffstat (limited to 'roms/u-boot/board/atmel/sama5d2_xplained/sama5d2_xplained.c')
| -rw-r--r-- | roms/u-boot/board/atmel/sama5d2_xplained/sama5d2_xplained.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/roms/u-boot/board/atmel/sama5d2_xplained/sama5d2_xplained.c b/roms/u-boot/board/atmel/sama5d2_xplained/sama5d2_xplained.c new file mode 100644 index 000000000..5110ec896 --- /dev/null +++ b/roms/u-boot/board/atmel/sama5d2_xplained/sama5d2_xplained.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2015 Atmel Corporation + * Wenyou.Yang <wenyou.yang@atmel.com> + */ + +#include <common.h> +#include <debug_uart.h> +#include <init.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch/at91_common.h> +#include <asm/arch/atmel_pio4.h> +#include <asm/arch/atmel_mpddrc.h> +#include <asm/arch/atmel_sdhci.h> +#include <asm/arch/clk.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sama5d2.h> + +extern void at91_pda_detect(void); + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_CMD_USB +static void board_usb_hw_init(void) +{ + atmel_pio4_set_pio_output(AT91_PIO_PORTB, 10, 1); +} +#endif + +#ifdef CONFIG_BOARD_LATE_INIT +int board_late_init(void) +{ +#ifdef CONFIG_DM_VIDEO + at91_video_show_board_info(); +#endif + at91_pda_detect(); + return 0; +} +#endif + +#ifdef CONFIG_DEBUG_UART_BOARD_INIT +static void board_uart1_hw_init(void) +{ + atmel_pio4_set_a_periph(AT91_PIO_PORTD, 2, ATMEL_PIO_PUEN_MASK); /* URXD1 */ + atmel_pio4_set_a_periph(AT91_PIO_PORTD, 3, 0); /* UTXD1 */ + + at91_periph_clk_enable(ATMEL_ID_UART1); +} + +void board_debug_uart_init(void) +{ + board_uart1_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) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + +#ifdef CONFIG_CMD_USB + board_usb_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; +} + +#define AT24MAC_MAC_OFFSET 0x9a + +#ifdef CONFIG_MISC_INIT_R +int misc_init_r(void) +{ +#ifdef CONFIG_I2C_EEPROM + at91_set_ethaddr(AT24MAC_MAC_OFFSET); +#endif + + return 0; +} +#endif + +/* SPL */ +#ifdef CONFIG_SPL_BUILD +void spl_board_init(void) +{ +} + +static void ddrc_conf(struct atmel_mpddrc_config *ddrc) +{ + ddrc->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR3_SDRAM); + + ddrc->cr = (ATMEL_MPDDRC_CR_NC_COL_10 | + ATMEL_MPDDRC_CR_NR_ROW_14 | + ATMEL_MPDDRC_CR_CAS_DDR_CAS5 | + ATMEL_MPDDRC_CR_DIC_DS | + ATMEL_MPDDRC_CR_DIS_DLL | + ATMEL_MPDDRC_CR_NB_8BANKS | + ATMEL_MPDDRC_CR_DECOD_INTERLEAVED | + ATMEL_MPDDRC_CR_UNAL_SUPPORTED); + + ddrc->rtr = 0x511; + + ddrc->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | + 9 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | + 3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | + 4 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); + + ddrc->tpr1 = (27 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET | + 29 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET | + 0 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET | + 3 << ATMEL_MPDDRC_TPR1_TXP_OFFSET); + + ddrc->tpr2 = (0 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET | + 0 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET | + 0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET | + 4 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET | + 7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET); +} + +void mem_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + struct atmel_mpddr *mpddrc = (struct atmel_mpddr *)ATMEL_BASE_MPDDRC; + struct atmel_mpddrc_config ddrc_config; + u32 reg; + + ddrc_conf(&ddrc_config); + + at91_periph_clk_enable(ATMEL_ID_MPDDRC); + writel(AT91_PMC_DDR, &pmc->scer); + + reg = readl(&mpddrc->io_calibr); + reg &= ~ATMEL_MPDDRC_IO_CALIBR_RDIV; + reg |= ATMEL_MPDDRC_IO_CALIBR_DDR3_RZQ_55; + reg &= ~ATMEL_MPDDRC_IO_CALIBR_TZQIO; + reg |= ATMEL_MPDDRC_IO_CALIBR_TZQIO_(100); + writel(reg, &mpddrc->io_calibr); + + writel(ATMEL_MPDDRC_RD_DATA_PATH_SHIFT_TWO_CYCLE, + &mpddrc->rd_data_path); + + ddr3_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddrc_config); + + writel(0x3, &mpddrc->cal_mr4); + writel(64, &mpddrc->tim_cal); +} + +void at91_pmc_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 tmp; + + /* + * while coming from the ROM code, we run on PLLA @ 492 MHz / 164 MHz + * so we need to slow down and configure MCKR accordingly. + * This is why we have a special flavor of the switching function. + */ + tmp = AT91_PMC_MCKR_PLLADIV_2 | + AT91_PMC_MCKR_MDIV_3 | + AT91_PMC_MCKR_CSS_MAIN; + at91_mck_init_down(tmp); + + tmp = AT91_PMC_PLLAR_29 | + AT91_PMC_PLLXR_PLLCOUNT(0x3f) | + AT91_PMC_PLLXR_MUL(82) | + AT91_PMC_PLLXR_DIV(1); + at91_plla_init(tmp); + + writel(0x0 << 8, &pmc->pllicpr); + + tmp = AT91_PMC_MCKR_H32MXDIV | + AT91_PMC_MCKR_PLLADIV_2 | + AT91_PMC_MCKR_MDIV_3 | + AT91_PMC_MCKR_CSS_PLLA; + at91_mck_init(tmp); +} +#endif |