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Code Issues Releases Activity

Add mmio handling to mmu.h

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This commit is contained in:
TuxSH 2018-02-23 01:45:26 +01:00
parent 0ef8f1db2e
commit 5e1c137e26
1 changed files with 111 additions and 7 deletions
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118
exosphere/mmu.h
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@ -67,7 +67,23 @@
#define MMU_PTE_BLOCK_NG BIT(11)
#define MMU_PTE_BLOCK_PXN BITL(53)
#define MMU_PTE_BLOCK_UXN BITL(54)
#define MMU_PTE_BLOCK_UXN MMU_PTE_BLOCK_UXN
#define MMU_PTE_BLOCK_XN MMU_PTE_BLOCK_UXN
/*
* AP[2:1]
*/
#define MMU_AP_PRIV_RW (0 << 6)
#define MMU_AP_RW (1 << 6)
#define MMU_AP_PRIV_RO (2 << 6)
#define MMU_AP_RO (3 << 6)
/*
* S2AP[2:1] (for stage2 translations; secmon doesn't use it)
*/
#define MMU_S2AP_NONE (0 << 6)
#define MMU_S2AP_RO (1 << 6)
#define MMU_S2AP_WO (2 << 6)
#define MMU_S2AP_RW (3 << 6)
/*
* AttrIndx[2:0]
@ -101,8 +117,8 @@
#define TCR_EL2_RSVD (BIT(31) | BIT(23))
#define TCR_EL3_RSVD (BIT(31) | BIT(23))
static inline void mmu_init_table(unsigned int level, uintptr_t *tbl) {
for(size_t i = 0; i < MMU_Lx_MASK(level); i++) {
static inline void mmu_init_table(uintptr_t *tbl, size_t num_entries) {
for(size_t i = 0; i < num_entries; i++) {
tbl[i] = MMU_PTE_TYPE_FAULT;
}
}
@ -120,8 +136,8 @@ static inline void mmu_map_table(unsigned int level, uintptr_t *tbl, uintptr_t b
tbl[mmu_compute_index(level, base_addr)] = (uintptr_t)next_lvl_tbl_pa | attrs | MMU_PTE_TYPE_TABLE;
}
static inline void mmu_map_block_l012(unsigned int level, uintptr_t *tbl, uintptr_t base_addr, uintptr_t phys_addr, uint64_t attrs) {
tbl[mmu_compute_index(level, base_addr)] = phys_addr | attrs | MMU_PTE_TYPE_BLOCK;
static inline void mmu_map_block(unsigned int level, uintptr_t *tbl, uintptr_t base_addr, uintptr_t phys_addr, uint64_t attrs) {
tbl[mmu_compute_index(level, base_addr)] = phys_addr | attrs | MMU_PTE_BLOCK_AF | MMU_PTE_TYPE_BLOCK;
}
static inline void mmu_map_page(uintptr_t *tbl, uintptr_t base_addr, uintptr_t phys_addr, uint64_t attrs) {
@ -132,10 +148,10 @@ static inline void mmu_unmap(unsigned int level, uintptr_t *tbl, uintptr_t base_
tbl[mmu_compute_index(level, base_addr)] = MMU_PTE_TYPE_FAULT;
}
static inline void mmu_map_block_range_l012(unsigned int level, uintptr_t *tbl, uintptr_t base_addr, uintptr_t phys_addr, size_t size, uint64_t attrs) {
static inline void mmu_map_block_range(unsigned int level, uintptr_t *tbl, uintptr_t base_addr, uintptr_t phys_addr, size_t size, uint64_t attrs) {
size = (size >> MMU_Lx_SHIFT(level)) << MMU_Lx_SHIFT(level);
for(size_t offset = 0; offset < size; offset += MMU_Lx_SHIFT(level)) {
mmu_map_block_l012(level, tbl, base_addr + offset, phys_addr + offset, attrs);
mmu_map_block(level, tbl, base_addr + offset, phys_addr + offset, attrs);
}
}
@ -153,4 +169,92 @@ static inline void mmu_unmap_range(unsigned int level, uintptr_t *tbl, uintptr_t
}
}
/* Switch specific stuff */
static const struct {
uintptr_t pa;
size_t size;
bool is_secure;
} devices[] =
{
{ 0x50041000, 0x1000, true }, /* ARM Interrupt Distributor */
{ 0x50042000, 0x2000, true }, /* Interrupt Controller Physical CPU interface */
{ 0x70006000, 0x1000, false }, /* UART-A */
{ 0x60006000, 0x1000, false }, /* Clock and Reset */
{ 0x7000E000, 0x1000, true }, /* RTC, PMC */
{ 0x60005000, 0x1000, true }, /* TMRs, WDTs */
{ 0x6000C000, 0x1000, true }, /* System Registers */
{ 0x70012000, 0x2000, true }, /* SE */
{ 0x700F0000, 0x1000, true }, /* SYSCTR0 */
{ 0x70019000, 0x1000, true }, /* MC */
{ 0x7000F000, 0x1000, true }, /* FUSE (0x7000F800) */
{ 0x70000000, 0x4000, true }, /* MISC */
{ 0x60007000, 0x1000, true }, /* Flow Controller */
{ 0x40002000, 0x1000, true }, /* iRAM-A */
{ 0x7000D000, 0x1000, true }, /* I2C-5,6 - SPI 2B-1 to 4 */
{ 0x6000D000, 0x1000, true }, /* GPIO-1 - GPIO-8 */
{ 0x7000C000, 0x1000, true }, /* I2C-I2C4 */
{ 0x6000F000, 0x1000, true }, /* Exception vectors */
};
#define MMIO_DEVID_GICD 0
#define MMIO_DEVID_ICC 1
#define MMIO_DEVID_UART_A 2
#define MMIO_DEVID_CLKRST 3
#define MMIO_DEVID_RTC_PMC 4
#define MMIO_DEVID_TMRs_WDTs 5
#define MMIO_DEVID_SYSREGS 6
#define MMIO_DEVID_SE 7
#define MMIO_DEVID_SYSCTR0 8
#define MMIO_DEVID_MC 9
#define MMIO_DEVID_FUSE 10
#define MMIO_DEVID_MISC 11
#define MMIO_DEVID_FLOWCTRL 12
#define MMIO_DEVID_NXBOOTLOADER_MAILBOX 13
#define MMIO_DEVID_I2C56_SPI2B 14
#define MMIO_DEVID_GPIO 15
#define MMIO_DEVID_DTV_I2C234 16
#define MMIO_DEVID_EXCEPTION_VECTORS 17
#ifndef MMIO_USE_IDENTIY_MAPPING
#define MMIO_BASE 0x1F0080000ull
static inline uintptr_t mmio_get_device_address(unsigned int device_id) {
size_t offset = 0;
for(unsigned int i = 0; i < devid; i++) {
offset += devices[i].size;
offset += 0x1000; /* guard page */
}
return MMIO_BASE + offset;
}
#else
static inline uintptr_t mmio_get_device_address(unsigned int devid) {
return devices[devid];
}
#endif
static inline void mmio_map_all_devices(uintptr_t *mmu_l3_tbl) {
static const uint64_t secure_device_attributes = MMU_PTE_BLOCK_XN | MMU_PTE_BLOCK_INNER_SHAREBLE | MMU_PTE_BLOCK_MEMTYPE(1);
static const uint64_t device_attributes = MMU_PTE_TABLE_NS | secure_device_attributes;
for(size_t i = 0, offset = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
uint64_t attributes = devices[i].is_secure ? secure_device_attributes : device_attributes;
mmu_map_page_range(mmu_l3_tbl, MMIO_BASE + offset, devices[i].pa, devices[i].size, attributes);
offset += devices[i].size;
offset += 0x1000; /* insert guard page */
}
}
static inline void mmio_unmap_all_devices(uintptr_t *mmu_l3_tbl) {
for(size_t i = 0, offset = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
mmu_unmap_page_range(mmu_l3_tbl, MMIO_BASE + offset, devices[i].pa, devices[i].size);
offset += devices[i].size;
offset += 0x1000; /* insert guard page */
}
}
#endif