[U-Boot] [PATCH 14/20] arm: socfpga: add SPL support for Arria 10

[Ley Foon Tan]

On Sab, 2017-02-25 at 22:43 +0100, Marek Vasut wrote:
> On 02/22/2017 10:47 AM, Ley Foon Tan wrote:
> > 
> > Add SPL support for Arria 10.
> > 
> > Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
> > Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
> > ---
> >  arch/arm/mach-socfpga/spl.c | 92
> > ++++++++++++++++++++++++++++++++++++++++++++-
> >  1 file changed, 90 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/arm/mach-socfpga/spl.c b/arch/arm/mach-
> > socfpga/spl.c
> > index fec4c7a..1299e67 100644
> > --- a/arch/arm/mach-socfpga/spl.c
> > +++ b/arch/arm/mach-socfpga/spl.c
> > @@ -19,37 +19,55 @@
> >  #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
> Wasn't this defined in the misc support patch already ?
Good catch, will remove this.
> 
> > 
> >  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 =
> > +#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> > +#define BOOTINFO_BSEL_SHIFT	12
> > +#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
> This looks awful, you might want to split this function into
> A10-specific and Gen5 specific one(s) .
Yes, will remove GEN5 switch here.
> 
> > 
> >  		return BOOT_DEVICE_SPI;
> >  	default:
> >  		printf("Invalid boot device (bsel=%08x)!\n",
> > bsel);
> > @@ -68,6 +86,7 @@ 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 +201,72 @@ 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)
> > +#ifdef CONFIG_SPL_BOARD_INIT
> > +void spl_board_init(void)
> > +{
> > +	/* 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
> > +
> > +void board_init_f(ulong dummy)
> > +{
> > +	memset(__bss_start, 0, __bss_end - __bss_start);
> Is this really needed ? Should be done by common code already ...
Yes, common code will do memset after this function. Remove memset
here.
> 
> > 
> > +	/*
> > +	 * 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 */
> > +	/* FDT is at end of image */
> > +	gd->fdt_blob = (void *)(__bss_end);
> This looks like common code too ?
Yes, will remove this.
> 
> > 
> > +	/* 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
> > 
>