diff options
Diffstat (limited to 'arch/arm/mach-meson')
-rw-r--r-- | arch/arm/mach-meson/Kconfig | 31 | ||||
-rw-r--r-- | arch/arm/mach-meson/Makefile | 7 | ||||
-rw-r--r-- | arch/arm/mach-meson/board.c | 67 | ||||
-rw-r--r-- | arch/arm/mach-meson/sm.c | 57 |
4 files changed, 162 insertions, 0 deletions
diff --git a/arch/arm/mach-meson/Kconfig b/arch/arm/mach-meson/Kconfig new file mode 100644 index 0000000000..77d3cfec59 --- /dev/null +++ b/arch/arm/mach-meson/Kconfig @@ -0,0 +1,31 @@ +if ARCH_MESON + +config MESON_GXBB + bool "Support Meson GXBaby" + select ARM64 + select DM + select DM_SERIAL + help + The Amlogic Meson GXBaby (S905) is an ARM SoC with a + quad-core Cortex-A53 CPU and a Mali-450 GPU. + +if MESON_GXBB + +config TARGET_ODROID_C2 + bool "ODROID-C2" + help + ODROID-C2 is a single board computer based on Meson GXBaby + with 2 GiB of RAM, Gigabit Ethernet, HDMI, 4 USB, micro-SD + slot, eMMC, IR receiver and a 40-pin GPIO header. + +endif + +config SYS_SOC + default "meson" + +config SYS_MALLOC_F_LEN + default 0x1000 + +source "board/hardkernel/odroid-c2/Kconfig" + +endif diff --git a/arch/arm/mach-meson/Makefile b/arch/arm/mach-meson/Makefile new file mode 100644 index 0000000000..bf49b8b1e5 --- /dev/null +++ b/arch/arm/mach-meson/Makefile @@ -0,0 +1,7 @@ +# +# Copyright (c) 2016 Beniamino Galvani <b.galvani@gmail.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += board.o sm.o diff --git a/arch/arm/mach-meson/board.c b/arch/arm/mach-meson/board.c new file mode 100644 index 0000000000..64fa3c191e --- /dev/null +++ b/arch/arm/mach-meson/board.c @@ -0,0 +1,67 @@ +/* + * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <libfdt.h> +#include <linux/err.h> +#include <asm/arch/gxbb.h> +#include <asm/arch/sm.h> +#include <asm/armv8/mmu.h> +#include <asm/unaligned.h> + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ + const fdt64_t *val; + int offset; + int len; + + offset = fdt_path_offset(gd->fdt_blob, "/memory"); + if (offset < 0) + return -EINVAL; + + val = fdt_getprop(gd->fdt_blob, offset, "reg", &len); + if (len < sizeof(*val) * 2) + return -EINVAL; + + /* Use unaligned access since cache is still disabled */ + gd->ram_size = get_unaligned_be64(&val[1]); + + return 0; +} + +void dram_init_banksize(void) +{ + /* Reserve first 16 MiB of RAM for firmware */ + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE + (16 * 1024 * 1024); + gd->bd->bi_dram[0].size = gd->ram_size - (16 * 1024 * 1024); +} + +void reset_cpu(ulong addr) +{ + psci_system_reset(true); +} + +static struct mm_region gxbb_mem_map[] = { + { + .base = 0x0UL, + .size = 0x80000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE + }, { + .base = 0x80000000UL, + .size = 0x80000000UL, + .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 = gxbb_mem_map; diff --git a/arch/arm/mach-meson/sm.c b/arch/arm/mach-meson/sm.c new file mode 100644 index 0000000000..1b35a220d3 --- /dev/null +++ b/arch/arm/mach-meson/sm.c @@ -0,0 +1,57 @@ +/* + * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + * + * Secure monitor calls. + */ + +#include <common.h> +#include <asm/arch/gxbb.h> +#include <linux/kernel.h> + +#define FN_GET_SHARE_MEM_INPUT_BASE 0x82000020 +#define FN_GET_SHARE_MEM_OUTPUT_BASE 0x82000021 +#define FN_EFUSE_READ 0x82000030 +#define FN_EFUSE_WRITE 0x82000031 + +static void *shmem_input; +static void *shmem_output; + +static void meson_init_shmem(void) +{ + struct pt_regs regs; + + if (shmem_input && shmem_output) + return; + + regs.regs[0] = FN_GET_SHARE_MEM_INPUT_BASE; + smc_call(®s); + shmem_input = (void *)regs.regs[0]; + + regs.regs[0] = FN_GET_SHARE_MEM_OUTPUT_BASE; + smc_call(®s); + shmem_output = (void *)regs.regs[0]; + + debug("Secure Monitor shmem: 0x%p 0x%p\n", shmem_input, shmem_output); +} + +ssize_t meson_sm_read_efuse(uintptr_t offset, void *buffer, size_t size) +{ + struct pt_regs regs; + + meson_init_shmem(); + + regs.regs[0] = FN_EFUSE_READ; + regs.regs[1] = offset; + regs.regs[2] = size; + + smc_call(®s); + + if (regs.regs[0] == 0) + return -1; + + memcpy(buffer, shmem_output, min(size, regs.regs[0])); + + return regs.regs[0]; +} |