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exo2: add security checks, full 2.0.0 support

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Michael Scire 2020-06-12 02:21:08 -07:00 • committed by SciresM
parent 37d13f92a8
commit 79e4c0ef6e
5 changed files with 62 additions and 23 deletions
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36
exosphere/program/source/smc/secmon_smc_power_management.cpp
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@ -44,6 +44,7 @@ namespace ams::secmon::smc {
constexpr inline const uintptr_t CLK_RST = MemoryRegionVirtualDeviceClkRst.GetAddress();
constexpr inline const uintptr_t EVP = secmon::MemoryRegionVirtualDeviceExceptionVectors.GetAddress();
constexpr inline const uintptr_t FLOW_CTLR = MemoryRegionVirtualDeviceFlowController.GetAddress();
constexpr inline const uintptr_t AHB_ARBC = MemoryRegionVirtualDeviceSystem.GetAddress();
constexpr inline uintptr_t CommonSmcStackTop = MemoryRegionVirtualTzramVolatileData.GetEndAddress() - (0x80 * (NumCores - 1));
@ -157,11 +158,42 @@ namespace ams::secmon::smc {
AMS_ABORT_UNLESS(reg::HasValue(PMC + APBDEV_PMC_PWRGATE_STATUS, PMC_REG_BITS_VALUE(PWRGATE_STATUS_CE123, 0)));
/* Validate that the bpmp is appropriately halted. */
const bool jtag = IsJtagEnabled() || GetTargetFirmware() < TargetFirmware_4_0_0;
const bool jtag = IsJtagEnabled();
AMS_ABORT_UNLESS(reg::Read(FLOW_CTLR + FLOW_CTLR_HALT_COP_EVENTS) == reg::Encode(FLOW_REG_BITS_ENUM (HALT_COP_EVENTS_MODE, FLOW_MODE_STOP),
FLOW_REG_BITS_ENUM_SEL(HALT_COP_EVENTS_JTAG, jtag, ENABLED, DISABLED)));
/* TODO */
/* Validate that USB2, APB-DMA, AHB-DMA are held in reset. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_RST_DEVICES_H, CLK_RST_REG_BITS_ENUM(RST_DEVICES_H_SWR_USB2_RST, ENABLE),
CLK_RST_REG_BITS_ENUM(RST_DEVICES_H_SWR_APBDMA_RST, ENABLE),
CLK_RST_REG_BITS_ENUM(RST_DEVICES_H_SWR_AHBDMA_RST, ENABLE)));
/* Validate that USBD is held in reset. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_RST_DEVICES_L, CLK_RST_REG_BITS_ENUM(RST_DEVICES_L_SWR_USBD_RST, ENABLE)));
/* Validate that AHB-DMA, USB, USB2, COP are not allowed to arbitrate on the AHB. */
AMS_ABORT_UNLESS(reg::HasValue(AHB_ARBC + AHB_ARBITRATION_DISABLE, AHB_REG_BITS_ENUM(ARBITRATION_DISABLE_COP, DISABLE),
AHB_REG_BITS_ENUM(ARBITRATION_DISABLE_AHBDMA, DISABLE),
AHB_REG_BITS_ENUM(ARBITRATION_DISABLE_USB, DISABLE),
AHB_REG_BITS_ENUM(ARBITRATION_DISABLE_USB2, DISABLE)));
/* Validate that the GPIO controller has clock enabled. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_CLK_OUT_ENB_L, CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_L_CLK_ENB_GPIO, ENABLE)));
/* Validate that both FUSE and KFUSE have clock enabled. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_CLK_OUT_ENB_H, CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_H_CLK_ENB_FUSE, ENABLE),
CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_H_CLK_ENB_KFUSE, ENABLE)));
/* Validate that all of IRAM has clock enabled. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_CLK_OUT_ENB_U, CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_U_CLK_ENB_IRAMA, ENABLE),
CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_U_CLK_ENB_IRAMB, ENABLE),
CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_U_CLK_ENB_IRAMC, ENABLE),
CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_U_CLK_ENB_IRAMD, ENABLE)));
/* Validate that ACTMON has clock enabled. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_CLK_OUT_ENB_V, CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_V_CLK_ENB_ACTMON, ENABLE)));
/* Validate that ENTROPY has clock enabled. */
AMS_ABORT_UNLESS(reg::HasValue(CLK_RST + CLK_RST_CONTROLLER_CLK_OUT_ENB_W, CLK_RST_REG_BITS_ENUM(CLK_OUT_ENB_W_CLK_ENB_ENTROPY, ENABLE)));
}
void GenerateCryptographicallyRandomBytes(void * const dst, int size) {