From: Jerome Brunet jbrunet@baylibre.com
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 --- arch/arm/include/asm/arch-meson/g12a.h | 66 +++++++++++ arch/arm/mach-meson/Kconfig | 9 +- arch/arm/mach-meson/Makefile | 1 + arch/arm/mach-meson/board-g12a.c | 150 +++++++++++++++++++++++++ 4 files changed, 225 insertions(+), 1 deletion(-) create mode 100644 arch/arm/include/asm/arch-meson/g12a.h create mode 100644 arch/arm/mach-meson/board-g12a.c
diff --git a/arch/arm/include/asm/arch-meson/g12a.h b/arch/arm/include/asm/arch-meson/g12a.h new file mode 100644 index 0000000000..b806667860 --- /dev/null +++ b/arch/arm/include/asm/arch-meson/g12a.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018 BayLibre, SAS + * Author: Neil Armstrong narmstrong@baylibre.com + */ + +#ifndef __G12A_H__ +#define __G12A_H__ + +#define G12A_AOBUS_BASE 0xff800000 +#define G12A_PERIPHS_BASE 0xff634400 +#define G12A_HIU_BASE 0xff63c000 +#define G12A_ETH_PHY_BASE 0xff64c000 +#define G12A_ETH_BASE 0xff3f0000 + +/* Always-On Peripherals registers */ +#define G12A_AO_ADDR(off) (G12A_AOBUS_BASE + ((off) << 2)) + +#define G12A_AO_SEC_GP_CFG0 G12A_AO_ADDR(0x90) +#define G12A_AO_SEC_GP_CFG3 G12A_AO_ADDR(0x93) +#define G12A_AO_SEC_GP_CFG4 G12A_AO_ADDR(0x94) +#define G12A_AO_SEC_GP_CFG5 G12A_AO_ADDR(0x95) + +#define G12A_AO_BOOT_DEVICE 0xF +#define G12A_AO_MEM_SIZE_MASK 0xFFFF0000 +#define G12A_AO_MEM_SIZE_SHIFT 16 +#define G12A_AO_BL31_RSVMEM_SIZE_MASK 0xFFFF0000 +#define G12A_AO_BL31_RSVMEM_SIZE_SHIFT 16 +#define G12A_AO_BL32_RSVMEM_SIZE_MASK 0xFFFF + +/* Peripherals registers */ +#define G12A_PERIPHS_ADDR(off) (G12A_PERIPHS_BASE + ((off) << 2)) + +#define G12A_ETH_REG_0 G12A_PERIPHS_ADDR(0x50) +#define G12A_ETH_REG_1 G12A_PERIPHS_ADDR(0x51) + +#define G12A_ETH_REG_0_PHY_INTF_RGMII BIT(0) +#define G12A_ETH_REG_0_PHY_INTF_RMII BIT(2) +#define G12A_ETH_REG_0_TX_PHASE(x) (((x) & 3) << 5) +#define G12A_ETH_REG_0_TX_RATIO(x) (((x) & 7) << 7) +#define G12A_ETH_REG_0_PHY_CLK_EN BIT(10) +#define G12A_ETH_REG_0_INVERT_RMII_CLK BIT(11) +#define G12A_ETH_REG_0_CLK_EN BIT(12) + +#define G12A_ETH_PHY_ADDR(off) (G12A_ETH_PHY_BASE + ((off) << 2)) +#define ETH_PLL_CNTL0 G12A_ETH_PHY_ADDR(0x11) +#define ETH_PLL_CNTL1 G12A_ETH_PHY_ADDR(0x12) +#define ETH_PLL_CNTL2 G12A_ETH_PHY_ADDR(0x13) +#define ETH_PLL_CNTL3 G12A_ETH_PHY_ADDR(0x14) +#define ETH_PLL_CNTL4 G12A_ETH_PHY_ADDR(0x15) +#define ETH_PLL_CNTL5 G12A_ETH_PHY_ADDR(0x16) +#define ETH_PLL_CNTL6 G12A_ETH_PHY_ADDR(0x17) +#define ETH_PLL_CNTL7 G12A_ETH_PHY_ADDR(0x18) +#define ETH_PHY_CNTL0 G12A_ETH_PHY_ADDR(0x20) +#define ETH_PHY_CNTL1 G12A_ETH_PHY_ADDR(0x21) +#define ETH_PHY_CNTL2 G12A_ETH_PHY_ADDR(0x22) + +/* HIU registers */ +#define G12A_HIU_ADDR(off) (G12A_HIU_BASE + ((off) << 2)) + +#define G12A_MEM_PD_REG_0 G12A_HIU_ADDR(0x40) + +/* Ethernet memory power domain */ +#define G12A_MEM_PD_REG_0_ETH_MASK (BIT(2) | BIT(3)) + +#endif /* __G12A_H__ */ diff --git a/arch/arm/mach-meson/Kconfig b/arch/arm/mach-meson/Kconfig index 1b1d0aef0d..e29e4c0acc 100644 --- a/arch/arm/mach-meson/Kconfig +++ b/arch/arm/mach-meson/Kconfig @@ -41,7 +41,13 @@ config MESON_AXG 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 @@ config SYS_BOARD 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 6ddfba606b..a9e4046f80 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 0000000000..fc3764b960 --- /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); +}