diff options
| -rw-r--r-- | platform/generic/mips/eyeq7h.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/platform/generic/mips/eyeq7h.c b/platform/generic/mips/eyeq7h.c index 04ab5286..f09ec5f0 100644 --- a/platform/generic/mips/eyeq7h.c +++ b/platform/generic/mips/eyeq7h.c @@ -14,6 +14,7 @@ #include <sbi/sbi_timer.h> #include <sbi/sbi_hart_pmp.h> #include <sbi/riscv_io.h> +#include <libfdt.h> #include <sbi_utils/fdt/fdt_helper.h> #include <sbi_utils/fdt/fdt_fixup.h> #include <mips/p8700.h> @@ -121,6 +122,31 @@ static struct sbi_domain_memregion *find_last_memregion(const struct sbi_domain return --reg; } +static int fixup_dram_region(const struct sbi_domain *dom, + struct sbi_domain_memregion *reg) +{ + const void *fdt = fdt_get_address(); + int node; + int ret; + uint64_t mem_addr, mem_size; + static const char mem_str[] = "memory"; + + if (!reg || !fdt) + return SBI_EINVAL; + + /* Find the memory range */ + node = fdt_node_offset_by_prop_value(fdt, -1, "device_type", + mem_str, sizeof(mem_str)); + ret = fdt_get_node_addr_size(fdt, node, 0, &mem_addr, &mem_size); + if (ret) + return ret; + reg->flags = SBI_DOMAIN_MEMREGION_MMIO; /* disable cache & prefetch */ + return sbi_domain_root_add_memrange(mem_addr, mem_size, mem_size, + (SBI_DOMAIN_MEMREGION_SU_READABLE | + SBI_DOMAIN_MEMREGION_SU_WRITABLE | + SBI_DOMAIN_MEMREGION_SU_EXECUTABLE)); +} + static void fdt_disable_by_compat(void *fdt, const char *compatible) { int node = 0; @@ -265,6 +291,8 @@ static void eyeq7h_init_clusters(void) static int eyeq7h_early_init(bool cold_boot) { + const struct sbi_domain *dom; + struct sbi_domain_memregion *reg; int rc; unsigned long cm_base; @@ -310,7 +338,14 @@ static int eyeq7h_early_init(bool cold_boot) SBI_DOMAIN_MEMREGION_SU_READABLE | SBI_DOMAIN_MEMREGION_SU_WRITABLE); - return 0; + /* + * sbi_domain_init adds last "all-inclusive" memory region + * 0 .. ~0 RWX + * Find this region (it is the last one) and update size according to DRAM + */ + dom = sbi_domain_thishart_ptr(); + reg = find_last_memregion(dom); + return fixup_dram_region(dom, reg); } static int eyeq7h_nascent_init(void) |