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exo2: implement SmcGetEmummcConfig

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This commit is contained in:
Michael Scire 2020-05-20 04:42:42 -07:00 committed by SciresM
parent 36754e2c38
commit 985e97cf78
3 changed files with 57 additions and 6 deletions
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4
exosphere2/program/source/secmon_map.cpp
View file

@ -209,7 +209,7 @@ namespace ams::secmon {
/* Hold the lock. */
lock_guard.Cancel();
return true;
return MemoryRegionVirtualAtmosphereIramPage.GetAddress();
}
void UnmapAtmosphereIramPage() {
@ -260,7 +260,7 @@ namespace ams::secmon {
/* Hold the lock. */
lock_guard.Cancel();
return true;
return MemoryRegionVirtualAtmosphereUserPage.GetAddress();
}
void UnmapAtmosphereUserPage() {

4
exosphere2/program/source/smc/secmon_smc_handler.cpp
View file

@ -233,8 +233,8 @@ namespace ams::secmon::smc {
constinit std::atomic<int> g_logged = 0;
constexpr int LogMin = 0x200;
constexpr int LogMax = 0x400;
constexpr int LogMin = 0x4000;
constexpr int LogMax = 0x4200;
constexpr size_t LogBufSize = 0x5000;

55
exosphere2/program/source/smc/secmon_smc_info.cpp
View file

@ -16,6 +16,7 @@
#include <exosphere.hpp>
#include "../secmon_error.hpp"
#include "../secmon_misc.hpp"
#include "secmon_page_mapper.hpp"
#include "secmon_smc_info.hpp"
#include "secmon_smc_power_management.hpp"
@ -284,8 +285,58 @@ namespace ams::secmon::smc {
/* This is an atmosphere extension smc. */
SmcResult SmcGetEmummcConfig(SmcArguments &args) {
/* TODO */
return SmcResult::NotImplemented;
/* Decode arguments. */
const auto mmc = static_cast<EmummcMmc>(args.r[1]);
const uintptr_t user_address = args.r[2];
const uintptr_t user_offset = user_address % 4_KB;
/* Validate arguments. */
/* NOTE: In the future, configuration for non-NAND storage may be implemented. */
SMC_R_UNLESS(mmc == EmummcMmc_Nand, NotImplemented);
SMC_R_UNLESS(user_offset + 2 * sizeof(EmummcFilePath) <= 4_KB, InvalidArgument);
/* Get the emummc config. */
const auto &cfg = GetEmummcConfiguration();
static_assert(sizeof(cfg.file_cfg) == sizeof(EmummcFilePath));
static_assert(sizeof(cfg.emu_dir_path) == sizeof(EmummcFilePath));
/* Clear the output. */
constexpr size_t InlineOutputSize = sizeof(args) - sizeof(args.r[0]);
u8 * const inline_output = static_cast<u8 *>(static_cast<void *>(std::addressof(args.r[1])));
std::memset(inline_output, 0, InlineOutputSize);
/* Copy out the configuration. */
{
/* Map the user output page. */
AtmosphereUserPageMapper mapper(user_address);
SMC_R_UNLESS(mapper.Map(), InvalidArgument);
/* Copy the base configuration. */
static_assert(sizeof(cfg.base_cfg) <= InlineOutputSize);
std::memcpy(inline_output, std::addressof(cfg.base_cfg), sizeof(cfg.base_cfg));
/* Copy out type-specific data. */
switch (cfg.base_cfg.type) {
case EmummcType_None:
/* No additional configuration needs to be copied. */
break;
case EmummcType_Partition:
/* Copy the partition config. */
static_assert(sizeof(cfg.base_cfg) + sizeof(cfg.partition_cfg) <= InlineOutputSize);
std::memcpy(inline_output + sizeof(cfg.base_cfg), std::addressof(cfg.partition_cfg), sizeof(cfg.partition_cfg));
break;
case EmummcType_File:
/* Copy the file config. */
SMC_R_UNLESS(mapper.CopyToUser(user_address, std::addressof(cfg.file_cfg), sizeof(cfg.file_cfg)), InvalidArgument);
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
/* Copy the redirection directory path to the user page. */
SMC_R_UNLESS(mapper.CopyToUser(user_address + sizeof(EmummcFilePath), std::addressof(cfg.emu_dir_path), sizeof(cfg.emu_dir_path)), InvalidArgument);
}
return SmcResult::Success;
}
/* For exosphere's usage. */