--- /dev/null
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian@popies.net>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * (C) Copyright 2010
+ * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <net.h>
+#include <netdev.h>
+#include <mmc.h>
+#include <atmel_mci.h>
+#include <i2c.h>
+#include <spi.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91sam9260_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/at91_shdwn.h>
+#include <asm/arch/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_CMD_NAND
+static void nand_hw_init(void)
+{
+ struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
+ struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+ unsigned long csa;
+
+ /* Assign CS3 to NAND/SmartMedia Interface */
+ csa = readl(&matrix->ebicsa);
+ csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
+ writel(csa, &matrix->ebicsa);
+
+ /* Configure SMC CS3 for NAND/SmartMedia */
+ writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
+ AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
+ &smc->cs[3].setup);
+ writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
+ AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
+ &smc->cs[3].pulse);
+ writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
+ &smc->cs[3].cycle);
+ writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
+ AT91_SMC_MODE_EXNW_DISABLE |
+ AT91_SMC_MODE_DBW_8 |
+ AT91_SMC_MODE_TDF_CYCLE(2),
+ &smc->cs[3].mode);
+
+ /* Configure RDY/BSY */
+ at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
+
+ /* Enable NandFlash */
+ at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
+}
+#endif
+
+#ifdef CONFIG_MACB
+static void macb_hw_init(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable EMAC clock */
+ writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
+
+ /* Initialize EMAC=MACB hardware */
+ at91_macb_hw_init();
+}
+#endif
+
+#ifdef CONFIG_GENERIC_ATMEL_MCI
+/* this is a weak define that we are overriding */
+int board_mmc_init(bd_t *bd)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable MCI clock */
+ writel(1 << ATMEL_ID_MCI, &pmc->pcer);
+
+ /* Initialize MCI hardware */
+ at91_mci_hw_init();
+
+ /* This calls the atmel_mmc_init in gen_atmel_mci.c */
+ return atmel_mci_init((void *)ATMEL_BASE_MCI);
+}
+
+/* this is a weak define that we are overriding */
+int board_mmc_getcd(struct mmc *mmc)
+{
+ return !at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN);
+}
+
+#endif
+
+int board_early_init_f(void)
+{
+ struct at91_shdwn *shdwn = (struct at91_shdwn *)ATMEL_BASE_SHDWN;
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /*
+ * make sure the board can be powered on by
+ * any transition on WKUP
+ */
+ writel(AT91_SHDW_MR_WKMODE0H2L | AT91_SHDW_MR_WKMODE0L2H,
+ &shdwn->mr);
+
+ /* Enable clocks for all PIOs */
+ writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
+ (1 << ATMEL_ID_PIOC),
+ &pmc->pcer);
+
+ /* set SCL0 and SDA0 to open drain */
+ at91_set_pio_output(I2C0_PORT, SCL0_PIN, 1);
+ at91_set_pio_multi_drive(I2C0_PORT, SCL0_PIN, 1);
+ at91_set_pio_pullup(I2C0_PORT, SCL0_PIN, 1);
+ at91_set_pio_output(I2C0_PORT, SDA0_PIN, 1);
+ at91_set_pio_multi_drive(I2C0_PORT, SDA0_PIN, 1);
+ at91_set_pio_pullup(I2C0_PORT, SDA0_PIN, 1);
+
+ /* set SCL1 and SDA1 to open drain */
+ at91_set_pio_output(I2C1_PORT, SCL1_PIN, 1);
+ at91_set_pio_multi_drive(I2C1_PORT, SCL1_PIN, 1);
+ at91_set_pio_pullup(I2C1_PORT, SCL1_PIN, 1);
+ at91_set_pio_output(I2C1_PORT, SDA1_PIN, 1);
+ at91_set_pio_multi_drive(I2C1_PORT, SDA1_PIN, 1);
+ at91_set_pio_pullup(I2C1_PORT, SDA1_PIN, 1);
+ return 0;
+}
+
+int board_init(void)
+{
+ /* arch number of TOP9000 Board */
+ gd->bd->bi_arch_number = MACH_TYPE_TOP9000;
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+ at91_seriald_hw_init();
+#ifdef CONFIG_CMD_NAND
+ nand_hw_init();
+#endif
+#ifdef CONFIG_MACB
+ macb_hw_init();
+#endif
+#ifdef CONFIG_ATMEL_SPI0
+ /* (n+4) denotes to use nSPISEL(0) in GPIO mode! */
+ at91_spi0_hw_init(1 << (FRAM_CS_NUM + 4));
+#endif
+#ifdef CONFIG_ATMEL_SPI1
+ at91_spi1_hw_init(1 << (ENC_CS_NUM + 4));
+#endif
+ return 0;
+}
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+ /* read 'factory' part of EEPROM */
+ read_factory_r();
+ return 0;
+}
+#endif
+
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size(
+ (void *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_SYS_SDRAM_SIZE);
+ return 0;
+}
+
+#ifdef CONFIG_RESET_PHY_R
+void reset_phy(void)
+{
+ /*
+ * Initialize ethernet HW addresses prior to starting Linux,
+ * needed for nfsroot.
+ * TODO: We need to investigate if that is really necessary.
+ */
+ eth_init(gd->bd);
+}
+#endif
+
+int board_eth_init(bd_t *bis)
+{
+ int rc = 0;
+ int num = 0;
+#ifdef CONFIG_MACB
+ rc = macb_eth_initialize(0,
+ (void *)ATMEL_BASE_EMAC0,
+ CONFIG_SYS_PHY_ID);
+ if (!rc)
+ num++;
+#endif
+#ifdef CONFIG_ENC28J60
+ rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM,
+ ENC_SPI_CLOCK, SPI_MODE_0);
+ if (!rc)
+ num++;
+# ifdef CONFIG_ENC28J60_2
+ rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+1,
+ ENC_SPI_CLOCK, SPI_MODE_0);
+ if (!rc)
+ num++;
+# ifdef CONFIG_ENC28J60_3
+ rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+2,
+ ENC_SPI_CLOCK, SPI_MODE_0);
+ if (!rc)
+ num++;
+# endif
+# endif
+#endif
+ return num;
+}
+
+/*
+ * I2C access functions
+ *
+ * Note:
+ * We need to access Bus 0 before relocation to access the
+ * environment settings.
+ * However i2c_get_bus_num() cannot be called before
+ * relocation.
+ */
+#ifdef CONFIG_SYS_I2C_SOFT
+void iic_init(void)
+{
+ /* ports are now initialized in board_early_init_f() */
+}
+
+int iic_read(void)
+{
+ switch (I2C_ADAP_HWNR) {
+ case 0:
+ return at91_get_pio_value(I2C0_PORT, SDA0_PIN);
+ case 1:
+ return at91_get_pio_value(I2C1_PORT, SDA1_PIN);
+ }
+ return 1;
+}
+
+void iic_sda(int bit)
+{
+ switch (I2C_ADAP_HWNR) {
+ case 0:
+ at91_set_pio_value(I2C0_PORT, SDA0_PIN, bit);
+ break;
+ case 1:
+ at91_set_pio_value(I2C1_PORT, SDA1_PIN, bit);
+ break;
+ }
+}
+
+void iic_scl(int bit)
+{
+ switch (I2C_ADAP_HWNR) {
+ case 0:
+ at91_set_pio_value(I2C0_PORT, SCL0_PIN, bit);
+ break;
+ case 1:
+ at91_set_pio_value(I2C1_PORT, SCL1_PIN, bit);
+ break;
+ }
+}
+
+#endif
Code Review / kvmfornfv.git / blobdiff