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Add PCI driver

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This commit is contained in:
Martin Petr
2025-11-30 10:47:59 +01:00
parent af5d8c709b
commit f483a34d3c
9 changed files with 338 additions and 25 deletions
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77
core/src/main.c
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@@ -1,5 +1,8 @@
#include "main.h"
#include "efi.h"
#include "efi.h"
#include <Protocol/CpuIo2.h>
#include <Protocol/PciRootBridgeIo.h>
#include "duktape.h"
#include "embedded_js.h"
@@ -35,6 +38,63 @@ duk_ret_t native_systable_conout_set_attribute(duk_context *ctx) {
return 0;
}
duk_ret_t native_systable_io_dword_in(duk_context *ctx) {
EFI_CPU_IO2_PROTOCOL* cpuIo;
EFI_GUID cpuIoGuid = EFI_CPU_IO2_PROTOCOL_GUID;
systemTable->BootServices->LocateProtocol(&cpuIoGuid, NULL, (void**)&cpuIo);
UINT32 data;
cpuIo->Io.Read(cpuIo, EfiCpuIoWidthUint32, duk_to_uint(ctx, 0), 1, &data);
duk_push_uint(ctx, data);
return 1;
}
duk_ret_t native_systable_io_dword_out(duk_context *ctx) {
EFI_CPU_IO2_PROTOCOL* cpuIo;
EFI_GUID cpuIoGuid = EFI_CPU_IO2_PROTOCOL_GUID;
systemTable->BootServices->LocateProtocol(&cpuIoGuid, NULL, (void**)&cpuIo);
UINT32 data = duk_to_uint(ctx, 1);
cpuIo->Io.Write(cpuIo, EfiCpuIoWidthUint32, duk_to_uint(ctx, 0), 1, &data);
return 0;
}
duk_ret_t native_systable_pci_read_config(duk_context *ctx) {
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL* pci;
EFI_GUID pciGuid = EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID;
systemTable->BootServices->LocateProtocol(&pciGuid, NULL, (void**)&pci);
UINT64 bus = duk_to_uint(ctx, 0);
UINT64 device = duk_to_uint(ctx, 1);
UINT64 func = duk_to_uint(ctx, 2);
UINT64 offset = duk_to_uint(ctx, 3);
UINT64 address = (bus << 24) | (device << 16) | (func << 8) | (offset & 0xff);
UINT32 data = 0;
pci->Pci.Read(pci, EfiPciWidthUint32, address, 1, &data);
duk_push_uint(ctx, data);
return 1;
}
duk_ret_t native_systable_pci_write_config(duk_context *ctx) {
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL* pci;
EFI_GUID pciGuid = EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID;
systemTable->BootServices->LocateProtocol(&pciGuid, NULL, (void**)&pci);
UINT64 bus = duk_to_uint(ctx, 0);
UINT64 device = duk_to_uint(ctx, 1);
UINT64 func = duk_to_uint(ctx, 2);
UINT64 offset = duk_to_uint(ctx, 3);
UINT64 address = (bus << 24) | (device << 16) | (func << 8) | (offset & 0xff);
UINT32 data = duk_to_uint(ctx, 4);
pci->Pci.Write(pci, EfiPciWidthUint32, address, 1, &data);
return 0;
}
int kernel_main(EFI_SYSTEM_TABLE *st) {
systemTable = st;
ctx = duk_create_heap_default();
@@ -48,12 +108,27 @@ int kernel_main(EFI_SYSTEM_TABLE *st) {
duk_push_c_function(ctx, native_systable_conout_set_attribute, 1);
duk_put_global_string(ctx, "$___native_systable_conout_setAttribute");
duk_push_c_function(ctx, native_systable_io_dword_in, 1);
duk_put_global_string(ctx, "$___native_systable_io_dword_in");
duk_push_c_function(ctx, native_systable_io_dword_out, 2);
duk_put_global_string(ctx, "$___native_systable_io_dword_out");
duk_push_c_function(ctx, native_systable_pci_read_config, 4);
duk_put_global_string(ctx, "$___native_systable_pci_read_config");
duk_push_c_function(ctx, native_systable_pci_write_config, 5);
duk_put_global_string(ctx, "$___native_systable_pci_write_config");
duk_push_string(ctx, EMBEDDED_JS);
duk_int_t returnCode = duk_peval(ctx);
if (returnCode != 0)
{
duk_safe_to_stacktrace(ctx, -1);
CHAR16 buffer[256];
ascii_to_utf16(duk_safe_to_string(ctx, -1), buffer);
systemTable->ConOut->OutputString(systemTable->ConOut, buffer);
@@ -61,6 +136,8 @@ int kernel_main(EFI_SYSTEM_TABLE *st) {
duk_pop(ctx);
systemTable->ConOut->OutputString(systemTable->ConOut, L"!!! KERNEL EXITED UNEXPECTEDLY !!!\r\n");
halt();
return 0;