On 01/10/2017 06:20 AM, Chee Tien Fong wrote:
> From: Tien Fong Chee <tien.fong.c...@intel.com>
>
> This patch adding the Arria10 critical hardware initialization before
> enabling console print out in spl.
>
> Signed-off-by: Tien Fong Chee <tien.fong.c...@intel.com>
> Cc: Marek Vasut <ma...@denx.de>
> Cc: Dinh Nguyen <dingu...@kernel.org>
> Cc: Chin Liang See <chin.liang....@intel.com>
> Cc: Tien Fong <skywind...@gmail.com>
> ---
> arch/arm/mach-socfpga/spl.c | 79
> +++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 76 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-socfpga/spl.c b/arch/arm/mach-socfpga/spl.c
> index fec4c7a..d381904 100644
> --- a/arch/arm/mach-socfpga/spl.c
> +++ b/arch/arm/mach-socfpga/spl.c
> @@ -1,5 +1,5 @@
> /*
> - * Copyright (C) 2012 Altera Corporation <www.altera.com>
> + * Copyright (C) 2012-2016 Altera Corporation <www.altera.com>
> *
> * SPDX-License-Identifier: GPL-2.0+
> */
> @@ -19,37 +19,58 @@
> #include <asm/arch/sdram.h>
> #include <asm/arch/scu.h>
> #include <asm/arch/nic301.h>
> +#include <asm/sections.h>
> +#include <watchdog.h>
> +#include <fdtdec.h>
> +#if defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> +#include <asm/arch/pinmux.h>
> +#endif
>
> DECLARE_GLOBAL_DATA_PTR;
>
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> +#define BOOTINFO_BSEL_SHIFT 0
> +#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> +#define BOOTINFO_BSEL_SHIFT 12
> +#endif
> +
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> static struct pl310_regs *const pl310 =
> (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
> static struct scu_registers *scu_regs =
> (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
> static struct nic301_registers *nic301_regs =
> (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
> -static struct socfpga_system_manager *sysmgr_regs =
> +#endif
> +
> +static const struct socfpga_system_manager *sysmgr_regs =
> (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
>
> u32 spl_boot_device(void)
> {
> const u32 bsel = readl(&sysmgr_regs->bootinfo);
>
> - switch (bsel & 0x7) {
> + switch ((bsel >> BOOTINFO_BSEL_SHIFT) & 0x7) {
> case 0x1: /* FPGA (HPS2FPGA Bridge) */
> return BOOT_DEVICE_RAM;
> case 0x2: /* NAND Flash (1.8V) */
> case 0x3: /* NAND Flash (3.0V) */
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
> +#endif
> return BOOT_DEVICE_NAND;
> case 0x4: /* SD/MMC External Transceiver (1.8V) */
> case 0x5: /* SD/MMC Internal Transceiver (3.0V) */
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> socfpga_per_reset(SOCFPGA_RESET(SDMMC), 0);
> socfpga_per_reset(SOCFPGA_RESET(DMA), 0);
> +#endif
> return BOOT_DEVICE_MMC1;
> case 0x6: /* QSPI Flash (1.8V) */
> case 0x7: /* QSPI Flash (3.0V) */
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> socfpga_per_reset(SOCFPGA_RESET(QSPI), 0);
> +#endif
> return BOOT_DEVICE_SPI;
> default:
> printf("Invalid boot device (bsel=%08x)!\n", bsel);
> @@ -68,6 +89,7 @@ u32 spl_boot_mode(const u32 boot_device)
> }
> #endif
>
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> static void socfpga_nic301_slave_ns(void)
> {
> writel(0x1, &nic301_regs->lwhps2fpgaregs);
> @@ -182,3 +204,54 @@ void board_init_f(ulong dummy)
> /* Configure simple malloc base pointer into RAM. */
> gd->malloc_base = CONFIG_SYS_TEXT_BASE + (1024 * 1024);
> }
> +#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> +void board_init_f(ulong dummy)
> +{
> + memset(__bss_start, 0, __bss_end - __bss_start);
> + /*
> + * Configure Clock Manager to use intosc clock instead external osc to
> + * ensure success watchdog operation. We do it as early as possible.
> + */
> + cm_use_intosc();
> +
> + watchdog_disable();
> +
> + arch_early_init_r();
> +
> +#ifdef CONFIG_HW_WATCHDOG
> + /* release osc1 watchdog timer 0 from reset */
> + reset_deassert_osc1wd0();
> +
> + /* reconfigure and enable the watchdog */
> + hw_watchdog_init();
> + WATCHDOG_RESET();
> +#endif /* CONFIG_HW_WATCHDOG */
> +
> +#ifdef CONFIG_OF_CONTROL
> + /* We need to access to FDT as this stage */
This means before DRAM is running ?
> + /* FDT is at end of image */
> + gd->fdt_blob = (void *)(__bss_end);
> + /* Check whether we have a valid FDT or not. */
> + if (fdtdec_prepare_fdt()) {
> + panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
> + "doc/README.fdt-control");
> + }
> +#endif /* CONFIG_OF_CONTROL */
> +
> + /* Initialize the timer */
> + timer_init();
> +
> + /* configuring the clock based on handoff */
> + cm_basic_init(gd->fdt_blob);
> + WATCHDOG_RESET();
> +
> + config_dedicated_pins(gd->fdt_blob);
> + WATCHDOG_RESET();
> +
> + /* Release UART from reset */
> + reset_deassert_uart();
> +
> + /* enable console uart printing */
> + preloader_console_init();
> +}
> +#endif
>
--
Best regards,
Marek Vasut
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