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Map userpage in at appropriate address (TODO: Invalidate TLB)

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Michael Scire 2018-02-25 01:31:45 -08:00
parent 78c8fe36fe
commit c46a3cc794
1 changed files with 3 additions and 1 deletions
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4
exosphere/userpage.c
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@ -3,6 +3,7 @@
#include "utils.h"
#include "userpage.h"
#include "memory_map.h"
uint64_t g_secure_page_user_address = NULL;
@ -22,7 +23,8 @@ bool upage_init(upage_ref_t *upage, void *user_address) {
/* Weakly validate SPL's physically random address is in DRAM. */
if (upage->user_page >> 31) {
g_secure_page_user_address = upage->user_page;
/* TODO: Map this page into the MMU and invalidate the TLB. */
mmu_map_page_range(mmu_l3_tbl, tzram_get_segment_address(TZRAM_SEGMENT_ID_USERPAGE), upage->user_page, 0x1000, MMU_PTE_BLOCK_XN | MMU_PTE_BLOCK_INNER_SHAREBLE | ATTRIB_MEMTYPE_NORMAL);
/* TODO: Invalidate the TLB to make this page readable. */
upage->secure_page = SECURE_USER_PAGE_ADDR;
}
}