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[boot] Add framebuffer progress bar

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After exiting UEFI, the bootloader had no way of displaying status to
the user. Now it will display a series of small boxes as a progress bar
along the bottom of the screen if a framebuffer exists. Errors or
warnings during a step will cause that step's box to turn red or orange,
and display bars above it to signal the error code.

This caused the simplification of the error handling system (which was
mostly just calling status_line::fail) and added different types of
status objects.
This commit is contained in:
Justin C. Miller
2021-01-08 22:25:37 -08:00
parent 6d4a32b6e8
commit e20c53f193
13 changed files with 457 additions and 293 deletions
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51
src/boot/main.cpp
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@@ -14,6 +14,7 @@
#include "loader.h"
#include "memory.h"
#include "paging.h"
#include "status.h"
#include "kernel_args.h"
@@ -38,7 +39,6 @@ const program_desc program_list[] = {
{L"kernel", L"jsix.elf"},
{L"null driver", L"nulldrv.elf"},
{L"fb driver", L"fb.elf"},
//{L"terminal driver", L"terminal.elf"},
};
/// Change a pointer to point to the higher-half linear-offset version
@@ -57,7 +57,7 @@ allocate_args_structure(
size_t max_modules,
size_t max_programs)
{
status_line status(L"Setting up kernel args memory");
status_line status {L"Setting up kernel args memory"};
args::header *args = nullptr;
@@ -98,13 +98,9 @@ add_module(args::header *args, args::mod_type type, buffer &data)
/// UEFI is still in control of the machine. (ie, while the loader still
/// has access to boot services.
args::header *
bootloader_main_uefi(
uefi::handle image,
uefi::system_table *st,
console &con)
uefi_preboot(uefi::handle image, uefi::system_table *st)
{
error::uefi_handler handler(con);
status_line status(L"Performing UEFI pre-boot");
status_line status {L"Performing UEFI pre-boot"};
uefi::boot_services *bs = st->boot_services;
uefi::runtime_services *rs = st->runtime_services;
@@ -128,8 +124,6 @@ bootloader_main_uefi(
memory::module_type);
add_module(args, args::mod_type::symbol_table, symbols);
args->video = con.fb();
for (auto &desc : program_list) {
buffer buf = loader::load_file(disk, desc.name, desc.path);
args::program &program = args->programs[args->num_programs++];
@@ -144,35 +138,48 @@ bootloader_main_uefi(
return args;
}
memory::efi_mem_map
uefi_exit(args::header *args, uefi::handle image, uefi::boot_services *bs)
{
status_line status {L"Exiting UEFI"};
memory::efi_mem_map map =
memory::build_kernel_mem_map(args, bs);
try_or_raise(
bs->exit_boot_services(image, map.key),
L"Failed to exit boot services");
return map;
}
} // namespace boot
/// The UEFI entrypoint for the loader.
extern "C" uefi::status
efi_main(uefi::handle image_handle, uefi::system_table *st)
efi_main(uefi::handle image, uefi::system_table *st)
{
using namespace boot;
error::cpu_assert_handler handler;
console con(st->boot_services, st->con_out);
args::header *args =
bootloader_main_uefi(image_handle, st, con);
args::header *args = uefi_preboot(image, st);
memory::efi_mem_map map = uefi_exit(args, image, st->boot_services);
args->video = con.fb();
status_bar status {con.fb()}; // Switch to fb status display
args::program &kernel = args->programs[0];
paging::map_pages(args, kernel.phys_addr, kernel.virt_addr, kernel.size);
kernel::entrypoint kentry =
reinterpret_cast<kernel::entrypoint>(kernel.entrypoint);
memory::efi_mem_map map =
memory::build_kernel_mem_map(args, st->boot_services);
try_or_raise(
st->boot_services->exit_boot_services(image_handle, map.key),
L"Failed to exit boot services");
status.next();
memory::virtualize(args->pml4, map, st->runtime_services);
status.next();
change_pointer(args->pml4);
hw::setup_cr4();
status.next();
kentry(args);
debug_break();