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arm: socfpga: spl: Configure SCU and NIC-301 early

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Configure the ARM SCU and NIC301 very early. The ARM SCU SNSAC register
must be configured, so we can access all peripherals. The NIC-301 must
be configured so that the BootROM is not mapped into the SDRAM address
space.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2015-07-09 05:15:40 +02:00
parent 4a0080d985
commit 232fcc6e9d
1 changed files with 22 additions and 0 deletions
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22
arch/arm/mach-socfpga/spl.c
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@ -17,11 +17,27 @@
#include <asm/arch/clock_manager.h>
#include <asm/arch/scan_manager.h>
#include <asm/arch/sdram.h>
#include <asm/arch/scu.h>
#include <asm/arch/nic301.h>
DECLARE_GLOBAL_DATA_PTR;
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 void socfpga_nic301_slave_ns(void)
{
writel(0x1, &nic301_regs->lwhps2fpgaregs);
writel(0x1, &nic301_regs->hps2fpgaregs);
writel(0x1, &nic301_regs->acp);
writel(0x1, &nic301_regs->rom);
writel(0x1, &nic301_regs->ocram);
writel(0x1, &nic301_regs->sdrdata);
}
void board_init_f(ulong dummy)
{
@ -42,7 +58,13 @@ void board_init_f(ulong dummy)
memset(__bss_start, 0, __bss_end - __bss_start);
socfpga_nic301_slave_ns();
/* Configure ARM MPU SNSAC register. */
setbits_le32(&scu_regs->sacr, 0xfff);
/* Remap SDRAM to 0x0 */
writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
writel(0x1, &pl310->pl310_addr_filter_start);
board_init_r(NULL, 0);