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-rw-r--r--arch/arm/mach-mvebu/Makefile9
-rw-r--r--arch/arm/mach-mvebu/cpu.c193
-rw-r--r--arch/arm/mach-mvebu/lowlevel_spl.S61
-rw-r--r--arch/arm/mach-mvebu/spl.c38
4 files changed, 301 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
new file mode 100644
index 0000000..737159b
--- /dev/null
+++ b/arch/arm/mach-mvebu/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright (C) 2014 Stefan Roese <sr@denx.de>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y = cpu.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
+obj-$(CONFIG_SPL_BUILD) += lowlevel_spl.o
diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
new file mode 100644
index 0000000..1cf70a9
--- /dev/null
+++ b/arch/arm/mach-mvebu/cpu.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2014 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+
+#define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
+#define DDR_SIZE_CS_OFF(n) (0x0004 + ((n) << 3))
+
+static struct mbus_win windows[] = {
+ /* PCIE MEM address space */
+ { DEFADR_PCI_MEM, 256 << 20, CPU_TARGET_PCIE13, CPU_ATTR_PCIE_MEM },
+
+ /* PCIE IO address space */
+ { DEFADR_PCI_IO, 64 << 10, CPU_TARGET_PCIE13, CPU_ATTR_PCIE_IO },
+
+ /* SPI */
+ { DEFADR_SPIF, 8 << 20, CPU_TARGET_DEVICEBUS_BOOTROM_SPI,
+ CPU_ATTR_SPIFLASH },
+
+ /* NOR */
+ { DEFADR_BOOTROM, 8 << 20, CPU_TARGET_DEVICEBUS_BOOTROM_SPI,
+ CPU_ATTR_BOOTROM },
+};
+
+void reset_cpu(unsigned long ignored)
+{
+ struct mvebu_system_registers *reg =
+ (struct mvebu_system_registers *)MVEBU_SYSTEM_REG_BASE;
+
+ writel(readl(&reg->rstoutn_mask) | 1, &reg->rstoutn_mask);
+ writel(readl(&reg->sys_soft_rst) | 1, &reg->sys_soft_rst);
+ while (1)
+ ;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+ u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
+ u8 revid = readl(MVEBU_REG_PCIE_REVID) & 0xff;
+
+ puts("SoC: ");
+
+ switch (devid) {
+ case SOC_MV78460_ID:
+ puts("MV78460-");
+ break;
+ default:
+ puts("Unknown-");
+ break;
+ }
+
+ switch (revid) {
+ case 1:
+ puts("A0\n");
+ break;
+ case 2:
+ puts("B0\n");
+ break;
+ default:
+ puts("??\n");
+ break;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_DISPLAY_CPUINFO */
+
+/*
+ * This function initialize Controller DRAM Fastpath windows.
+ * It takes the CS size information from the 0x1500 scratch registers
+ * and sets the correct windows sizes and base addresses accordingly.
+ *
+ * These values are set in the scratch registers by the Marvell
+ * DDR3 training code, which is executed by the BootROM before the
+ * main payload (U-Boot) is executed. This training code is currently
+ * only available in the Marvell U-Boot version. It needs to be
+ * ported to mainline U-Boot SPL at some point.
+ */
+static void update_sdram_window_sizes(void)
+{
+ u64 base = 0;
+ u32 size, temp;
+ int i;
+
+ for (i = 0; i < SDRAM_MAX_CS; i++) {
+ size = readl((MVEBU_SDRAM_SCRATCH + (i * 8))) & SDRAM_ADDR_MASK;
+ if (size != 0) {
+ size |= ~(SDRAM_ADDR_MASK);
+
+ /* Set Base Address */
+ temp = (base & 0xFF000000ll) | ((base >> 32) & 0xF);
+ writel(temp, MVEBU_SDRAM_BASE + DDR_BASE_CS_OFF(i));
+
+ /*
+ * Check if out of max window size and resize
+ * the window
+ */
+ temp = (readl(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i)) &
+ ~(SDRAM_ADDR_MASK)) | 1;
+ temp |= (size & SDRAM_ADDR_MASK);
+ writel(temp, MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i));
+
+ base += ((u64)size + 1);
+ } else {
+ /*
+ * Disable window if not used, otherwise this
+ * leads to overlapping enabled windows with
+ * pretty strange results
+ */
+ clrbits_le32(MVEBU_SDRAM_BASE + DDR_SIZE_CS_OFF(i), 1);
+ }
+ }
+}
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+ /* Linux expects the internal registers to be at 0xf1000000 */
+ writel(SOC_REGS_PHY_BASE, INTREG_BASE_ADDR_REG);
+
+ /*
+ * We need to call mvebu_mbus_probe() before calling
+ * update_sdram_window_sizes() as it disables all previously
+ * configured mbus windows and then configures them as
+ * required for U-Boot. Calling update_sdram_window_sizes()
+ * without this configuration will not work, as the internal
+ * registers can't be accessed reliably because of potenial
+ * double mapping.
+ * After updating the SDRAM access windows we need to call
+ * mvebu_mbus_probe() again, as this now correctly configures
+ * the SDRAM areas that are later used by the MVEBU drivers
+ * (e.g. USB, NETA).
+ */
+
+ /*
+ * First disable all windows
+ */
+ mvebu_mbus_probe(NULL, 0);
+
+ /*
+ * Now the SDRAM access windows can be reconfigured using
+ * the information in the SDRAM scratch pad registers
+ */
+ update_sdram_window_sizes();
+
+ /*
+ * Finally the mbus windows can be configured with the
+ * updated SDRAM sizes
+ */
+ mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
+
+ return 0;
+}
+#endif /* CONFIG_ARCH_CPU_INIT */
+
+/*
+ * SOC specific misc init
+ */
+#if defined(CONFIG_ARCH_MISC_INIT)
+int arch_misc_init(void)
+{
+ /* Nothing yet, perhaps we need something here later */
+ return 0;
+}
+#endif /* CONFIG_ARCH_MISC_INIT */
+
+#ifdef CONFIG_MVNETA
+int cpu_eth_init(bd_t *bis)
+{
+ mvneta_initialize(bis, MVEBU_EGIGA0_BASE, 0, CONFIG_PHY_BASE_ADDR + 0);
+ mvneta_initialize(bis, MVEBU_EGIGA1_BASE, 1, CONFIG_PHY_BASE_ADDR + 1);
+ mvneta_initialize(bis, MVEBU_EGIGA2_BASE, 2, CONFIG_PHY_BASE_ADDR + 2);
+ mvneta_initialize(bis, MVEBU_EGIGA3_BASE, 3, CONFIG_PHY_BASE_ADDR + 3);
+
+ return 0;
+}
+#endif
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+ /* Enable D-cache. I-cache is already enabled in start.S */
+ dcache_enable();
+}
+#endif
diff --git a/arch/arm/mach-mvebu/lowlevel_spl.S b/arch/arm/mach-mvebu/lowlevel_spl.S
new file mode 100644
index 0000000..69da7fe
--- /dev/null
+++ b/arch/arm/mach-mvebu/lowlevel_spl.S
@@ -0,0 +1,61 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+ENTRY(save_boot_params)
+ b save_boot_params_ret
+ENDPROC(save_boot_params)
+
+/*
+ * cache_inv - invalidate Cache line
+ * r0 - dest
+ */
+ .global cache_inv
+ .type cache_inv, %function
+ cache_inv:
+
+ stmfd sp!, {r1-r12}
+
+ mcr p15, 0, r0, c7, c6, 1
+
+ ldmfd sp!, {r1-r12}
+ bx lr
+
+
+/*
+ * flush_l1_v6 - l1 cache clean invalidate
+ * r0 - dest
+ */
+ .global flush_l1_v6
+ .type flush_l1_v6, %function
+ flush_l1_v6:
+
+ stmfd sp!, {r1-r12}
+
+ mcr p15, 0, r0, c7, c10, 5 /* @ data memory barrier */
+ mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
+ mcr p15, 0, r0, c7, c10, 4 /* @ data sync barrier */
+
+ ldmfd sp!, {r1-r12}
+ bx lr
+
+
+/*
+ * flush_l1_v7 - l1 cache clean invalidate
+ * r0 - dest
+ */
+ .global flush_l1_v7
+ .type flush_l1_v7, %function
+ flush_l1_v7:
+
+ stmfd sp!, {r1-r12}
+
+ dmb /* @data memory barrier */
+ mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
+ dsb /* @data sync barrier */
+
+ ldmfd sp!, {r1-r12}
+ bx lr
diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c
new file mode 100644
index 0000000..402e520
--- /dev/null
+++ b/arch/arm/mach-mvebu/spl.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2014 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 spl_boot_device(void)
+{
+ /* Right now only booting via SPI NOR flash is supported */
+ return BOOT_DEVICE_SPI;
+}
+
+void board_init_f(ulong dummy)
+{
+ /* Set global data pointer */
+ gd = &gdata;
+
+ /* Linux expects the internal registers to be at 0xf1000000 */
+ arch_cpu_init();
+
+ preloader_console_init();
+
+ /* First init the serdes PHY's */
+ serdes_phy_config();
+
+ /* Setup DDR */
+ ddr3_init();
+
+ board_init_r(NULL, 0);
+}
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