ARM: meson: add G12a support
Add support for the Amlogic G12A SoC, which is a mix between the
new physical memory mapping of AXG and the functionnalities of
the previous Amlogic GXL/GXM SoCs.
To handle the internal ethernet PHY, the Amlogic G12A SoCs now
embeds a dedicated PLL to feed the internal PHY.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/mach-meson/Kconfig b/arch/arm/mach-meson/Kconfig
index 1b1d0ae..e29e4c0 100644
--- a/arch/arm/mach-meson/Kconfig
+++ b/arch/arm/mach-meson/Kconfig
@@ -41,7 +41,13 @@
bool "AXG"
select MESON64_COMMON
help
- Select this if your SoC is an A113X/D
+ Select this if your SoC is an A113X/D
+
+config MESON_G12A
+ bool "G12A"
+ select MESON64_COMMON
+ help
+ Select this if your SoC is an S905X/D2
endchoice
@@ -65,6 +71,7 @@
default "p212" if MESON_GXL
default "q200" if MESON_GXM
default "s400" if MESON_AXG
+ default "u200" if MESON_G12A
default ""
help
This option contains information about board name.
diff --git a/arch/arm/mach-meson/Makefile b/arch/arm/mach-meson/Makefile
index 6ddfba6..a9e4046 100644
--- a/arch/arm/mach-meson/Makefile
+++ b/arch/arm/mach-meson/Makefile
@@ -5,3 +5,4 @@
obj-y += board-common.o sm.o board-info.o
obj-$(CONFIG_MESON_GX) += board-gx.o
obj-$(CONFIG_MESON_AXG) += board-axg.o
+obj-$(CONFIG_MESON_G12A) += board-g12a.o
diff --git a/arch/arm/mach-meson/board-g12a.c b/arch/arm/mach-meson/board-g12a.c
new file mode 100644
index 0000000..fc3764b
--- /dev/null
+++ b/arch/arm/mach-meson/board-g12a.c
@@ -0,0 +1,150 @@
+// 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/boot.h>
+#include <asm/arch/eth.h>
+#include <asm/arch/g12a.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;
+
+int meson_get_boot_device(void)
+{
+ return readl(G12A_AO_SEC_GP_CFG0) & G12A_AO_BOOT_DEVICE;
+}
+
+/* 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(G12A_AO_SEC_GP_CFG3);
+
+ bl31_size = ((reg & G12A_AO_BL31_RSVMEM_SIZE_MASK)
+ >> G12A_AO_BL31_RSVMEM_SIZE_SHIFT) * SZ_1K;
+ bl32_size = (reg & G12A_AO_BL32_RSVMEM_SIZE_MASK) * SZ_1K;
+
+ bl31_start = readl(G12A_AO_SEC_GP_CFG5);
+ bl32_start = readl(G12A_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(G12A_AO_SEC_GP_CFG0) & G12A_AO_MEM_SIZE_MASK)
+ >> G12A_AO_MEM_SIZE_SHIFT) * SZ_1M;
+}
+
+static struct mm_region g12a_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 = g12a_mem_map;
+
+static void g12a_enable_external_mdio(void)
+{
+ writel(0x0, ETH_PHY_CNTL2);
+}
+
+static void g12a_enable_internal_mdio(void)
+{
+ /* Fire up the PHY PLL */
+ writel(0x29c0040a, ETH_PLL_CNTL0);
+ writel(0x927e0000, ETH_PLL_CNTL1);
+ writel(0xac5f49e5, ETH_PLL_CNTL2);
+ writel(0x00000000, ETH_PLL_CNTL3);
+ writel(0x00000000, ETH_PLL_CNTL4);
+ writel(0x20200000, ETH_PLL_CNTL5);
+ writel(0x0000c002, ETH_PLL_CNTL6);
+ writel(0x00000023, ETH_PLL_CNTL7);
+ writel(0x39c0040a, ETH_PLL_CNTL0);
+ writel(0x19c0040a, ETH_PLL_CNTL0);
+
+ /* Select the internal MDIO */
+ writel(0x33000180, ETH_PHY_CNTL0);
+ writel(0x00074043, ETH_PHY_CNTL1);
+ writel(0x00000260, ETH_PHY_CNTL2);
+}
+
+/* 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(G12A_ETH_REG_0, G12A_ETH_REG_0_PHY_INTF_RGMII |
+ G12A_ETH_REG_0_TX_PHASE(1) |
+ G12A_ETH_REG_0_TX_RATIO(4) |
+ G12A_ETH_REG_0_PHY_CLK_EN |
+ G12A_ETH_REG_0_CLK_EN);
+ break;
+
+ case PHY_INTERFACE_MODE_RMII:
+ /* Set RMII mode */
+ out_le32(G12A_ETH_REG_0, G12A_ETH_REG_0_PHY_INTF_RMII |
+ G12A_ETH_REG_0_INVERT_RMII_CLK |
+ G12A_ETH_REG_0_CLK_EN);
+
+ /* Use G12A RMII Internal PHY */
+ if (flags & MESON_USE_INTERNAL_RMII_PHY)
+ g12a_enable_internal_mdio();
+ else
+ g12a_enable_external_mdio();
+
+ break;
+
+ default:
+ printf("Invalid Ethernet interface mode\n");
+ return;
+ }
+
+ /* Enable power gate */
+ clrbits_le32(G12A_MEM_PD_REG_0, G12A_MEM_PD_REG_0_ETH_MASK);
+}