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Re-add functionality to boot with new UEFI headers

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- Pointer fixup event
- ACPI searching
- Move CHECK_* to using try_or_raise()
This commit is contained in:
Justin C. Miller
2020-02-22 14:57:28 -08:00
parent 521c132801
commit f627ea7de0
10 changed files with 220 additions and 190 deletions
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109
src/boot/main.cpp
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@@ -9,25 +9,17 @@
#include "console.h"
#include "error.h"
#include "memory.h"
/*
#include "guids.h"
#include "kernel_args.h"
#include "loader.h"
#include "memory.h"
#include "utility.h"
#ifndef SCRATCH_PAGES
#define SCRATCH_PAGES 64
#endif
*/
#ifndef GIT_VERSION_WIDE
#define GIT_VERSION_WIDE L"no version"
#endif
using namespace boot;
/*
#define KERNEL_HEADER_MAGIC 0x600db007
#define KERNEL_HEADER_VERSION 1
@@ -43,9 +35,13 @@ struct kernel_header {
uint32_t gitsha;
};
#pragma pack(pop)
using kernel_entry = void (*)(kernel_args *);
*/
namespace boot {
/*
static void
type_to_wchar(wchar_t *into, uint32_t type)
{
@@ -91,30 +87,54 @@ detect_debug_mode(EFI_RUNTIME_SERVICES *run, kernel_args *header) {
}
*/
extern "C" uefi::status
efi_main(uefi::handle image_handle, uefi::system_table *st)
uefi::status
bootloader_main_uefi(uefi::system_table *st, console &con)
{
error::cpu_assert_handler handler;
error::uefi_handler handler(con);
uefi::boot_services *bs = st->boot_services;
uefi::runtime_services *rs = st->runtime_services;
console con(st);
con.initialize(GIT_VERSION_WIDE);
/*
con.status_begin(L"Trying to do a harder thing...");
con.status_warn(L"First warning");
con.status_warn(L"Second warning");
{
error::uefi_handler handler(con);
con.status_begin(L"Trying to do an easy thing...");
con.status_begin(L"Trying to do the impossible...");
con.status_warn(L"we're not going to make it");
error::raise(uefi::status::unsupported, L"OH NO");
*/
con.status_begin(L"Initializing pointer fixup for virtualization");
memory::init_pointer_fixup(bs, rs);
con.status_ok();
// Find ACPI tables. Ignore ACPI 1.0 if a 2.0 table is found.
//
con.status_begin(L"Searching for ACPI table");
uintptr_t acpi_table = 0;
for (size_t i = 0; i < st->number_of_table_entries; ++i) {
uefi::configuration_table *table = &st->configuration_table[i];
if (table->vendor_guid == uefi::vendor_guids::acpi2) {
acpi_table = reinterpret_cast<uintptr_t>(table->vendor_table);
break;
}
if (table->vendor_guid == uefi::vendor_guids::acpi1) {
// Mark a v1 table with the LSB high
acpi_table = reinterpret_cast<uintptr_t>(table->vendor_table);
acpi_table |= 1;
}
}
if (!acpi_table) {
error::raise(uefi::status::not_found, L"Could not find ACPI table");
} else if (acpi_table & 1) {
con.status_warn(L"Only found ACPI 1.0 table");
} else {
con.status_ok();
con.status_begin(L"Trying to do a harder thing...");
con.status_warn(L"First warning");
con.status_warn(L"Second warning");
con.status_begin(L"Trying to do the impossible...");
con.status_warn(L"we're not going to make it");
error::raise(uefi::status::unsupported, L"OH NO");
}
while(1);
@@ -122,28 +142,6 @@ efi_main(uefi::handle image_handle, uefi::system_table *st)
}
/*
// When checking console initialization, use CHECK_EFI_STATUS_OR_RETURN
// because we can't be sure if the console was fully set up
status = con.initialize(GIT_VERSION_WIDE);
CHECK_EFI_STATUS_OR_RETURN(status, "console::initialize");
// From here on out, we can use CHECK_EFI_STATUS_OR_FAIL instead
memory_init_pointer_fixup(bootsvc, runsvc, SCRATCH_PAGES);
// Find ACPI tables. Ignore ACPI 1.0 if a 2.0 table is found.
//
void *acpi_table = NULL;
for (size_t i=0; i<system_table->NumberOfTableEntries; ++i) {
EFI_CONFIGURATION_TABLE *efi_table = &system_table->ConfigurationTable[i];
if (is_guid(&efi_table->VendorGuid, &guid_acpi2)) {
acpi_table = efi_table->VendorTable;
break;
} else if (is_guid(&efi_table->VendorGuid, &guid_acpi1)) {
// Mark a v1 table with the LSB high
acpi_table = (void *)((intptr_t)efi_table->VendorTable | 0x1);
}
}
// Compute necessary number of data pages
//
size_t data_length = 0;
@@ -259,3 +257,16 @@ efi_main(uefi::handle image_handle, uefi::system_table *st)
return EFI_LOAD_ERROR;
}
*/
} // namespace boot
extern "C" uefi::status
efi_main(uefi::handle image_handle, uefi::system_table *st)
{
using namespace boot;
error::cpu_assert_handler handler;
console con(st);
return bootloader_main_uefi(st, con);
}