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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335 lines
7.2 KiB
335 lines
7.2 KiB
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
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* Based on:
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* U-Boot:board/davinci/da8xxevm/da850evm.c
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*
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* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
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*
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* Based on da830evm.c. Original Copyrights follow:
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*
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* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
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* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
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*/
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#include <common.h>
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#include <i2c.h>
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#include <net.h>
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#include <netdev.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <asm/arch/hardware.h>
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#include <asm/ti-common/davinci_nand.h>
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#include <asm/arch/emac_defs.h>
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#include <asm/arch/pinmux_defs.h>
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#include <asm/io.h>
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#include <asm/arch/davinci_misc.h>
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#include <linux/errno.h>
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#include <asm/gpio.h>
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#include <hwconfig.h>
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#include <bootstage.h>
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#include <asm/mach-types.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_DRIVER_TI_EMAC
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#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
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#define HAS_RMII 1
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#else
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#define HAS_RMII 0
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#endif
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#endif /* CONFIG_DRIVER_TI_EMAC */
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void dsp_lpsc_on(unsigned domain, unsigned int id)
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{
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dv_reg_p mdstat, mdctl, ptstat, ptcmd;
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struct davinci_psc_regs *psc_regs;
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psc_regs = davinci_psc0_regs;
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mdstat = &psc_regs->psc0.mdstat[id];
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mdctl = &psc_regs->psc0.mdctl[id];
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ptstat = &psc_regs->ptstat;
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ptcmd = &psc_regs->ptcmd;
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while (*ptstat & (0x1 << domain))
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;
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if ((*mdstat & 0x1f) == 0x03)
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return; /* Already on and enabled */
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*mdctl |= 0x03;
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*ptcmd = 0x1 << domain;
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while (*ptstat & (0x1 << domain))
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;
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while ((*mdstat & 0x1f) != 0x03)
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; /* Probably an overkill... */
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}
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static void dspwake(void)
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{
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unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
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u32 val;
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/* if the device is ARM only, return */
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if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
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return;
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if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
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return;
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*resetvect++ = 0x1E000; /* DSP Idle */
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/* clear out the next 10 words as NOP */
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memset(resetvect, 0, sizeof(unsigned) * 10);
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/* setup the DSP reset vector */
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writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
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dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
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val = readl(PSC0_MDCTL + (15 * 4));
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val |= 0x100;
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writel(val, (PSC0_MDCTL + (15 * 4)));
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}
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int misc_init_r(void)
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{
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dspwake();
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return 0;
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}
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static const struct pinmux_config gpio_pins[] = {
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/* GP7[14] selects bootmode*/
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{ pinmux(16), 8, 3 }, /* GP7[14] */
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};
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const struct pinmux_resource pinmuxes[] = {
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#ifdef CONFIG_DRIVER_TI_EMAC
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PINMUX_ITEM(emac_pins_mdio),
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#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
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PINMUX_ITEM(emac_pins_rmii),
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#else
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PINMUX_ITEM(emac_pins_mii),
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#endif
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#endif
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PINMUX_ITEM(uart2_pins_txrx),
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PINMUX_ITEM(uart2_pins_rtscts),
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PINMUX_ITEM(uart0_pins_txrx),
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PINMUX_ITEM(uart0_pins_rtscts),
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#ifdef CONFIG_NAND_DAVINCI
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PINMUX_ITEM(emifa_pins_cs3),
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PINMUX_ITEM(emifa_pins_nand),
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#endif
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PINMUX_ITEM(gpio_pins),
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};
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const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
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const struct lpsc_resource lpsc[] = {
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{ DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
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{ DAVINCI_LPSC_EMAC }, /* image download */
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{ DAVINCI_LPSC_UART2 }, /* console */
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{ DAVINCI_LPSC_UART0 }, /* console */
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{ DAVINCI_LPSC_GPIO },
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};
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const int lpsc_size = ARRAY_SIZE(lpsc);
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#ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
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#define CONFIG_DA850_EVM_MAX_CPU_CLK 300000000
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#endif
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#define REV_AM18X_EVM 0x100
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/*
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* get_board_rev() - setup to pass kernel board revision information
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* Returns:
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* bit[0-3] Maximum cpu clock rate supported by onboard SoC
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* 0000b - 300 MHz
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* 0001b - 372 MHz
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* 0010b - 408 MHz
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* 0011b - 456 MHz
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*/
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u32 get_board_rev(void)
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{
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char *s;
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u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
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u32 rev = 0;
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s = env_get("maxcpuclk");
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if (s)
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maxcpuclk = simple_strtoul(s, NULL, 10);
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if (maxcpuclk >= 456000000)
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rev = 3;
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else if (maxcpuclk >= 408000000)
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rev = 2;
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else if (maxcpuclk >= 372000000)
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rev = 1;
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#ifdef CONFIG_DA850_AM18X_EVM
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rev |= REV_AM18X_EVM;
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#endif
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return rev;
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}
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int board_early_init_f(void)
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{
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/*
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* Power on required peripherals
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* ARM does not have access by default to PSC0 and PSC1
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* assuming here that the DSP bootloader has set the IOPU
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* such that PSC access is available to ARM
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*/
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if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
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return 1;
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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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irq_init();
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/* arch number of the board */
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gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
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/* address of boot parameters */
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gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
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/* setup the SUSPSRC for ARM to control emulation suspend */
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writel(readl(&davinci_syscfg_regs->suspsrc) &
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~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
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DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
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DAVINCI_SYSCFG_SUSPSRC_UART0),
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&davinci_syscfg_regs->suspsrc);
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/* configure pinmux settings */
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if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
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return 1;
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#ifdef CONFIG_DRIVER_TI_EMAC
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davinci_emac_mii_mode_sel(HAS_RMII);
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#endif /* CONFIG_DRIVER_TI_EMAC */
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/* enable the console UART */
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writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
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DAVINCI_UART_PWREMU_MGMT_UTRST),
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#if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
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&davinci_uart0_ctrl_regs->pwremu_mgmt);
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#else
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&davinci_uart2_ctrl_regs->pwremu_mgmt);
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#endif
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return 0;
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}
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#ifdef CONFIG_DRIVER_TI_EMAC
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/*
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* Initializes on-board ethernet controllers.
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*/
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int board_eth_init(bd_t *bis)
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{
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if (!davinci_emac_initialize()) {
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printf("Error: Ethernet init failed!\n");
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return -1;
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}
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return 0;
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}
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#endif /* CONFIG_DRIVER_TI_EMAC */
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static int init_led(int gpio, char *name, int val)
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{
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int ret;
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ret = gpio_request(gpio, name);
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if (ret)
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return -1;
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ret = gpio_direction_output(gpio, val);
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if (ret)
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return -1;
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return gpio;
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}
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#define LED_ON 0
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#define LED_OFF 1
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#if !defined(CONFIG_SPL_BUILD)
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#ifdef CONFIG_SHOW_BOOT_PROGRESS
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void show_boot_progress(int status)
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{
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static int red;
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static int green;
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if (red == 0)
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red = init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
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if (red != CONFIG_IPAM390_GPIO_LED_RED)
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return;
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if (green == 0)
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green = init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green",
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LED_OFF);
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if (green != CONFIG_IPAM390_GPIO_LED_GREEN)
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return;
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switch (status) {
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case BOOTSTAGE_ID_RUN_OS:
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/*
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* set normal state
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* LED Red : on
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* LED green: off
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*/
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gpio_set_value(red, LED_ON);
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gpio_set_value(green, LED_OFF);
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break;
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case BOOTSTAGE_ID_MAIN_LOOP:
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/*
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* U-Boot operation
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* LED Red : on
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* LED green: on
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*/
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gpio_set_value(red, LED_ON);
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gpio_set_value(green, LED_ON);
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break;
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}
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}
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#endif
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#endif
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#ifdef CONFIG_SPL_OS_BOOT
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int spl_start_uboot(void)
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{
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int ret;
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int bootmode = 0;
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/*
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* GP7[14] selects bootmode:
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* 1: boot linux
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* 0: boot u-boot
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* if error accessing gpio boot U-Boot
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*
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* SPL bootmode
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* 0: boot linux
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* 1: boot u-boot
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*/
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ret = gpio_request(CONFIG_IPAM390_GPIO_BOOTMODE , "bootmode");
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if (ret)
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bootmode = 1;
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if (!bootmode) {
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ret = gpio_direction_input(CONFIG_IPAM390_GPIO_BOOTMODE);
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if (ret)
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bootmode = 1;
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}
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if (!bootmode)
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ret = gpio_get_value(CONFIG_IPAM390_GPIO_BOOTMODE);
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if (!bootmode)
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if (ret == 0)
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bootmode = 1;
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/*
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* LED red : on
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* LED green: off
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*/
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init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
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init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green", LED_OFF);
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return bootmode;
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}
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#endif
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