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Fix emunand SMC behaviors

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This commit is contained in:
Michael Scire
2019-05-28 13:25:12 -07:00
parent 40b838c896
commit 6dd366cb22
4 changed files with 13 additions and 4 deletions
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5
exosphere/src/smc_ams.c
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@@ -159,11 +159,12 @@ uint32_t ams_iram_copy(smc_args_t *args) {
uint32_t ams_write_address(smc_args_t *args) {
/* Implements a write to a DRAM page. */
/* This operation can be used to write to read-only pages. */
/* args->X[1] = DRAM address (translated by kernel), must be size-bytes aligned. */
/* args->X[1] = Virtual address, must be size-bytes aligned and readable by EL0. */
/* args->X[2] = Value. */
/* args->X[3] = size (must be 1, 2, 4, or 8). */
const uintptr_t dram_address = (uintptr_t)args->X[1];
const uintptr_t el0_virtual_address = (uintptr_t)args->X[1];
const uintptr_t dram_address = get_physical_address_el0(el0_virtual_address);
const uintptr_t dram_page_offset = (dram_address & 0xFFFULL);
const size_t size = (size_t)(args->X[3]);