upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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156 lines
4.1 KiB
156 lines
4.1 KiB
/*
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* Bluewater Systems Snapper 9260/9G20 modules
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*
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* (C) Copyright 2011 Bluewater Systems
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* Author: Andre Renaud <andre@bluewatersys.com>
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* Author: Ryan Mallon <ryan@bluewatersys.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/at91sam9260_matrix.h>
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#include <asm/arch/at91sam9_smc.h>
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#include <asm/arch/at91_common.h>
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#include <asm/arch/at91_pmc.h>
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#include <asm/arch/at91_rstc.h>
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#include <asm/arch/gpio.h>
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#include <net.h>
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#include <netdev.h>
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#include <i2c.h>
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#include <pca953x.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* IO Expander pins */
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#define IO_EXP_ETH_RESET (0 << 1)
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#define IO_EXP_ETH_POWER (1 << 1)
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static void macb_hw_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 at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
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struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
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unsigned long erstl;
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/* Enable clock */
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writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
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/* Disable pull-ups to prevent PHY going into test mode */
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writel(pin_to_mask(AT91_PIN_PA14) |
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pin_to_mask(AT91_PIN_PA15) |
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pin_to_mask(AT91_PIN_PA18),
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&pioa->pudr);
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/* Power down ethernet */
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pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
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pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
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/* Hold ethernet in reset */
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pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
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pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
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/* Enable ethernet power */
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pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
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/* Need to reset PHY -> 500ms reset */
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erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
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writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
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AT91_RSTC_MR_URSTEN, &rstc->mr);
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writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
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/* Wait for end hardware reset */
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while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
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;
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/* Restore NRST value */
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writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN, &rstc->mr);
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/* Bring the ethernet out of reset */
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pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
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/* The phy internal reset take 21ms */
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udelay(21 * 1000);
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/* Re-enable pull-up */
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writel(pin_to_mask(AT91_PIN_PA14) |
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pin_to_mask(AT91_PIN_PA15) |
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pin_to_mask(AT91_PIN_PA18),
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&pioa->puer);
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at91_macb_hw_init();
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}
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static void nand_hw_init(void)
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{
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struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
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struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
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unsigned long csa;
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/* Enable CS3 as NAND/SmartMedia */
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csa = readl(&matrix->ebicsa);
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csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
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writel(csa, &matrix->ebicsa);
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/* Configure SMC CS3 for NAND/SmartMedia */
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writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
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AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
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&smc->cs[3].setup);
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writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
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AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
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&smc->cs[3].pulse);
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writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
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&smc->cs[3].cycle);
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writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
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AT91_SMC_MODE_EXNW_DISABLE |
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AT91_SMC_MODE_DBW_8 |
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AT91_SMC_MODE_TDF_CYCLE(3),
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&smc->cs[3].mode);
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/* Configure RDY/BSY */
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at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
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/* Enable NandFlash */
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at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
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}
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int board_init(void)
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{
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struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
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/* Enable PIO clocks */
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writel((1 << ATMEL_ID_PIOA) |
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(1 << ATMEL_ID_PIOB) |
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(1 << ATMEL_ID_PIOC), &pmc->pcer);
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/* The mach-type is the same for both Snapper 9260 and 9G20 */
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gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
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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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/* Initialise peripherals */
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at91_seriald_hw_init();
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i2c_set_bus_num(0);
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nand_hw_init();
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macb_hw_init();
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return 0;
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}
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int board_eth_init(bd_t *bis)
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{
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return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
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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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void reset_phy(void)
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{
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}
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