mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
2f80a9f72e
All discovery boards have one user button & one user LED. Here we are just reading the button status & switching ON the user LED. Signed-off-by: Vikas Manocha <vikas.manocha@st.com> cc: Christophe KERELLO <christophe.kerello@st.com>
118 lines
2.1 KiB
C
118 lines
2.1 KiB
C
/*
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* (C) Copyright 2016
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* Vikas Manocha, <vikas.manocha@st.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 <dm.h>
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#include <ram.h>
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#include <asm/io.h>
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#include <asm/armv7m.h>
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#include <asm/arch/stm32.h>
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#include <asm/arch/gpio.h>
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#include <dm/platdata.h>
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#include <dm/platform_data/serial_stm32x7.h>
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#include <asm/arch/stm32_periph.h>
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#include <asm/arch/stm32_defs.h>
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#include <asm/arch/syscfg.h>
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#include <asm/gpio.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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struct udevice *dev;
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struct ram_info ram;
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int rv;
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rv = uclass_get_device(UCLASS_RAM, 0, &dev);
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if (rv) {
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debug("DRAM init failed: %d\n", rv);
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return rv;
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}
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rv = ram_get_info(dev, &ram);
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if (rv) {
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debug("Cannot get DRAM size: %d\n", rv);
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return rv;
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}
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debug("SDRAM base=%lx, size=%x\n", ram.base, ram.size);
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gd->ram_size = ram.size;
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/*
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* Fill in global info with description of SRAM configuration
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*/
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gd->bd->bi_dram[0].start = CONFIG_SYS_RAM_BASE;
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gd->bd->bi_dram[0].size = ram.size;
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return rv;
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}
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#ifdef CONFIG_ETH_DESIGNWARE
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static int stmmac_setup(void)
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{
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clock_setup(SYSCFG_CLOCK_CFG);
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/* Set >RMII mode */
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STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
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clock_setup(STMMAC_CLOCK_CFG);
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return 0;
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}
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int board_early_init_f(void)
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{
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stmmac_setup();
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return 0;
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}
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#endif
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u32 get_board_rev(void)
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{
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return 0;
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}
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int board_late_init(void)
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{
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struct gpio_desc gpio = {};
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int node;
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node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1");
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if (node < 0)
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return -1;
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gpio_request_by_name_nodev(gd->fdt_blob, node, "led-gpio", 0, &gpio,
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GPIOD_IS_OUT);
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if (dm_gpio_is_valid(&gpio)) {
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dm_gpio_set_value(&gpio, 0);
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mdelay(10);
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dm_gpio_set_value(&gpio, 1);
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}
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/* read button 1*/
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node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1");
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if (node < 0)
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return -1;
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gpio_request_by_name_nodev(gd->fdt_blob, node, "button-gpio", 0, &gpio,
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GPIOD_IS_IN);
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if (dm_gpio_is_valid(&gpio)) {
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if (dm_gpio_get_value(&gpio))
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puts("usr button is at HIGH LEVEL\n");
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else
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puts("usr button is at LOW LEVEL\n");
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}
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return 0;
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}
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int board_init(void)
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{
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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return 0;
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}
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