--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef __AXG_H__
+#define __AXG_H__
+
+#define AXG_AOBUS_BASE 0xff800000
+#define AXG_PERIPHS_BASE 0xff634400
+#define AXG_HIU_BASE 0xff63c000
+#define AXG_ETH_BASE 0xff3f0000
+
+/* Always-On Peripherals registers */
+#define AXG_AO_ADDR(off) (AXG_AOBUS_BASE + ((off) << 2))
+
+#define AXG_AO_SEC_GP_CFG0 AXG_AO_ADDR(0x90)
+#define AXG_AO_SEC_GP_CFG3 AXG_AO_ADDR(0x93)
+#define AXG_AO_SEC_GP_CFG4 AXG_AO_ADDR(0x94)
+#define AXG_AO_SEC_GP_CFG5 AXG_AO_ADDR(0x95)
+
+#define AXG_AO_MEM_SIZE_MASK 0xFFFF0000
+#define AXG_AO_MEM_SIZE_SHIFT 16
+#define AXG_AO_BL31_RSVMEM_SIZE_MASK 0xFFFF0000
+#define AXG_AO_BL31_RSVMEM_SIZE_SHIFT 16
+#define AXG_AO_BL32_RSVMEM_SIZE_MASK 0xFFFF
+
+/* Peripherals registers */
+#define AXG_PERIPHS_ADDR(off) (AXG_PERIPHS_BASE + ((off) << 2))
+
+#define AXG_ETH_REG_0 AXG_PERIPHS_ADDR(0x50)
+#define AXG_ETH_REG_1 AXG_PERIPHS_ADDR(0x51)
+
+#define AXG_ETH_REG_0_PHY_INTF_RGMII BIT(0)
+#define AXG_ETH_REG_0_PHY_INTF_RMII BIT(2)
+#define AXG_ETH_REG_0_TX_PHASE(x) (((x) & 3) << 5)
+#define AXG_ETH_REG_0_TX_RATIO(x) (((x) & 7) << 7)
+#define AXG_ETH_REG_0_PHY_CLK_EN BIT(10)
+#define AXG_ETH_REG_0_INVERT_RMII_CLK BIT(11)
+#define AXG_ETH_REG_0_CLK_EN BIT(12)
+
+/* HIU registers */
+#define AXG_HIU_ADDR(off) (AXG_HIU_BASE + ((off) << 2))
+
+#define AXG_MEM_PD_REG_0 AXG_HIU_ADDR(0x40)
+
+/* Ethernet memory power domain */
+#define AXG_MEM_PD_REG_0_ETH_MASK (BIT(2) | BIT(3))
+
+#endif /* __AXG_H__ */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com>
+ * (C) Copyright 2018 Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <common.h>
+#include <asm/arch/eth.h>
+#include <asm/arch/axg.h>
+#include <asm/arch/mem.h>
+#include <asm/io.h>
+#include <asm/armv8/mmu.h>
+#include <linux/sizes.h>
+#include <phy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Configure the reserved memory zones exported by the secure registers
+ * into EFI and DTB reserved memory entries.
+ */
+void meson_init_reserved_memory(void *fdt)
+{
+ u64 bl31_size, bl31_start;
+ u64 bl32_size, bl32_start;
+ u32 reg;
+
+ /*
+ * Get ARM Trusted Firmware reserved memory zones in :
+ * - AO_SEC_GP_CFG3: bl32 & bl31 size in KiB, can be 0
+ * - AO_SEC_GP_CFG5: bl31 physical start address, can be NULL
+ * - AO_SEC_GP_CFG4: bl32 physical start address, can be NULL
+ */
+ reg = readl(AXG_AO_SEC_GP_CFG3);
+
+ bl31_size = ((reg & AXG_AO_BL31_RSVMEM_SIZE_MASK)
+ >> AXG_AO_BL31_RSVMEM_SIZE_SHIFT) * SZ_1K;
+ bl32_size = (reg & AXG_AO_BL32_RSVMEM_SIZE_MASK) * SZ_1K;
+
+ bl31_start = readl(AXG_AO_SEC_GP_CFG5);
+ bl32_start = readl(AXG_AO_SEC_GP_CFG4);
+
+ /* Add BL31 reserved zone */
+ if (bl31_start && bl31_size)
+ meson_board_add_reserved_memory(fdt, bl31_start, bl31_size);
+
+ /* Add BL32 reserved zone */
+ if (bl32_start && bl32_size)
+ meson_board_add_reserved_memory(fdt, bl32_start, bl32_size);
+}
+
+phys_size_t get_effective_memsize(void)
+{
+ /* Size is reported in MiB, convert it in bytes */
+ return ((readl(AXG_AO_SEC_GP_CFG0) & AXG_AO_MEM_SIZE_MASK)
+ >> AXG_AO_MEM_SIZE_SHIFT) * SZ_1M;
+}
+
+static struct mm_region axg_mem_map[] = {
+ {
+ .virt = 0x0UL,
+ .phys = 0x0UL,
+ .size = 0x80000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+ PTE_BLOCK_INNER_SHARE
+ }, {
+ .virt = 0xf0000000UL,
+ .phys = 0xf0000000UL,
+ .size = 0x10000000UL,
+ .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+ PTE_BLOCK_NON_SHARE |
+ PTE_BLOCK_PXN | PTE_BLOCK_UXN
+ }, {
+ /* List terminator */
+ 0,
+ }
+};
+
+struct mm_region *mem_map = axg_mem_map;
+
+/* Configure the Ethernet MAC with the requested interface mode
+ * with some optional flags.
+ */
+void meson_eth_init(phy_interface_t mode, unsigned int flags)
+{
+ switch (mode) {
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ /* Set RGMII mode */
+ setbits_le32(AXG_ETH_REG_0, AXG_ETH_REG_0_PHY_INTF_RGMII |
+ AXG_ETH_REG_0_TX_PHASE(1) |
+ AXG_ETH_REG_0_TX_RATIO(4) |
+ AXG_ETH_REG_0_PHY_CLK_EN |
+ AXG_ETH_REG_0_CLK_EN);
+ break;
+
+ case PHY_INTERFACE_MODE_RMII:
+ /* Set RMII mode */
+ out_le32(AXG_ETH_REG_0, AXG_ETH_REG_0_PHY_INTF_RMII |
+ AXG_ETH_REG_0_INVERT_RMII_CLK |
+ AXG_ETH_REG_0_CLK_EN);
+ break;
+
+ default:
+ printf("Invalid Ethernet interface mode\n");
+ return;
+ }
+
+ /* Enable power gate */
+ clrbits_le32(AXG_MEM_PD_REG_0, AXG_MEM_PD_REG_0_ETH_MASK);
+}
projects / oweals / u-boot.git / commitdiff