diff options
Diffstat (limited to 'arch/arm/mach-meson/board-g12a.c')
| -rw-r--r-- | arch/arm/mach-meson/board-g12a.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/arch/arm/mach-meson/board-g12a.c b/arch/arm/mach-meson/board-g12a.c new file mode 100644 index 00000000000..fc3764b9604 --- /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); +} |