diff options
| author | Daniel Allred <d-allred@ti.com> | 2016-09-02 00:40:24 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-10-02 08:09:57 -0400 |
| commit | 66961394093983adeeac3fb35d6eaed00bfa5b47 (patch) | |
| tree | b0acf663f53781e0636da881ebb57afa4732d640 /arch | |
| parent | 32d333f2f068c77024631e54b3edc1c992d964a4 (diff) | |
ARM: omap5: add fdt secure dram reservation fixup
Adds a secure dram reservation fixup for secure
devices, when a region in the emif has been set aside
for secure world use. The size is defined by the
CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE config option.
Signed-off-by: Daniel Allred <d-allred@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/omap5/fdt.c | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/omap5/fdt.c b/arch/arm/cpu/armv7/omap5/fdt.c index 0493cd1eab..da8d59bb59 100644 --- a/arch/arm/cpu/armv7/omap5/fdt.c +++ b/arch/arm/cpu/armv7/omap5/fdt.c @@ -153,13 +153,73 @@ static int ft_hs_fixup_sram(void *fdt, bd_t *bd) static int ft_hs_fixup_sram(void *fdt, bd_t *bd) { return 0; } #endif +#if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE != 0) +static int ft_hs_fixup_dram(void *fdt, bd_t *bd) +{ + const char *path, *subpath; + int offs; + u32 sec_mem_start = CONFIG_TI_SECURE_EMIF_REGION_START; + u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE; + fdt64_t temp[2]; + + /* If start address is zero, place at end of DRAM */ + if (0 == sec_mem_start) + sec_mem_start = + (CONFIG_SYS_SDRAM_BASE + + (omap_sdram_size() - sec_mem_size)); + + /* Delete any original secure_reserved node */ + path = "/reserved-memory/secure_reserved"; + offs = fdt_path_offset(fdt, path); + if (offs >= 0) + fdt_del_node(fdt, offs); + + /* Add new secure_reserved node */ + path = "/reserved-memory"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + debug("Node %s not found\n", path); + path = "/"; + subpath = "reserved-memory"; + fdt_path_offset(fdt, path); + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s%s node.\n", path, subpath); + return 1; + } + path = "/reserved-memory"; + offs = fdt_path_offset(fdt, path); + } + + subpath = "secure_reserved"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s%s node.\n", path, subpath); + return 1; + } + + temp[0] = cpu_to_fdt64(((u64)sec_mem_start)); + temp[1] = cpu_to_fdt64(((u64)sec_mem_size)); + fdt_setprop_string(fdt, offs, "compatible", + "ti,dra7-secure-memory"); + fdt_setprop_string(fdt, offs, "status", "okay"); + fdt_setprop(fdt, offs, "no-map", NULL, 0); + fdt_setprop(fdt, offs, "reg", temp, sizeof(temp)); + + return 0; +} +#else +static int ft_hs_fixup_dram(void *fdt, bd_t *bd) { return 0; } +#endif + static void ft_hs_fixups(void *fdt, bd_t *bd) { /* Check we are running on an HS/EMU device type */ if (GP_DEVICE != get_device_type()) { if ((ft_hs_fixup_crossbar(fdt, bd) == 0) && (ft_hs_disable_rng(fdt, bd) == 0) && - (ft_hs_fixup_sram(fdt, bd) == 0)) + (ft_hs_fixup_sram(fdt, bd) == 0) && + (ft_hs_fixup_dram(fdt, bd) == 0)) return; } else { printf("ERROR: Incorrect device type (GP) detected!"); @@ -171,7 +231,7 @@ static void ft_hs_fixups(void *fdt, bd_t *bd) static void ft_hs_fixups(void *fdt, bd_t *bd) { } -#endif +#endif /* #ifdef CONFIG_TI_SECURE_DEVICE */ /* * Place for general cpu/SoC FDT fixups. Board specific |