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exosphere: set cpuactlr to guarantee it holds non reset value

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This commit is contained in:
Michael Scire 2020-04-15 01:26:28 -07:00
parent 3f5f9b60ea
commit 1d9a4f47fd
1 changed files with 13 additions and 5 deletions
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12
exosphere/src/warmboot_init.c
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@ -65,7 +65,7 @@ void init_dma_controllers(unsigned int target_firmware) {
MAKE_REG32(0x6000C038) = 0x0;
/* MSELECT_CONFIG_0 |= WRAP_TO_INCR_SLAVE0(APC) | WRAP_TO_INCR_SLAVE1(PCIe) | WRAP_TO_INCR_SLAVE2(GPU) */
MAKE_REG32(0x50060000) |= 0x38000000;
MAKE_REG32(0x50060000) = (MAKE_REG32(0x50060000) & 0xC4FFFFFF) | 0x38000000;
/* AHB_ARBITRATION_DISABLE_0 - Disables USB, USB2, and AHB-DMA from arbitration */
MAKE_REG32(0x6000C004) = 0x40060;
@ -99,7 +99,7 @@ void init_dma_controllers(unsigned int target_firmware) {
MAKE_REG32(0x60020038) = 0;
/* MSELECT_CONFIG_0 |= WRAP_TO_INCR_SLAVE0(APC) | WRAP_TO_INCR_SLAVE1(PCIe) | WRAP_TO_INCR_SLAVE2(GPU) */
MAKE_REG32(0x50060000) |= 0x38000000;
MAKE_REG32(0x50060000) |= (MAKE_REG32(0x50060000) & 0xC4FFFFFF) | 0x38000000;
/* AHB_ARBITRATION_PRIORITY_CTRL_0 - Select high prio group with prio 7 */
MAKE_REG32(0x6000C008) = 0xE0000001;
@ -111,6 +111,14 @@ void init_dma_controllers(unsigned int target_firmware) {
void _set_memory_registers_enable_mmu(const uintptr_t ttbr0) {
static const uintptr_t vbar = TZRAM_GET_SEGMENT_ADDRESS(TZRAM_SEGEMENT_ID_SECMON_EVT) + 0x800;
/*
- Non-cacheable load forwarding enabled
- Disable load-pass DMB.
- NOTE: This and this alone is done via inline asm, due to register argument limits.
*/
static const uint64_t cpuactlr = 0x800000001000000ull;
__asm__ __volatile__("msr s3_1_c15_c2_0, %0" :: "r"(cpuactlr) : "memory", "cc");
/*
- Disable table walk descriptor access prefetch.