compiles

dev/Kconfig

@@ -0,0 +1,15 @@
+menu "Device Drivers"
+
+config OF
+  bool "Support for OpenFirmware"
+  default y
+  help
+    Adds support for flattened device trees and OF platform drivers.
+
+config ACPI
+  bool "Support for ACPI firmware"
+  default y
+  help
+    Adds support for ACPI firmware, tables and devices.
+
+endmenu

dev/acpi/include/uacpi_types.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+
+typedef uint8_t uacpi_u8;
+typedef uint16_t uacpi_u16;
+typedef uint32_t uacpi_u32;
+typedef uint64_t uacpi_u64;
+
+typedef int8_t uacpi_i8;
+typedef int16_t uacpi_i16;
+typedef int32_t uacpi_i32;
+typedef int64_t uacpi_i64;
+
+#define UACPI_TRUE  true
+#define UACPI_FALSE false
+typedef bool uacpi_bool;
+
+#define UACPI_NULL nullptr
+
+typedef uintptr_t uacpi_uintptr;
+typedef uacpi_uintptr uacpi_virt_addr;
+typedef size_t uacpi_size;
+
+typedef va_list uacpi_va_list;
+#define uacpi_va_start va_start
+#define uacpi_va_end   va_end
+#define uacpi_va_arg   va_arg
+
+typedef char uacpi_char;
+
+#define uacpi_offsetof offsetof
+
+#define UACPI_PRIu64     "llu"
+#define UACPI_PRIx64     "llx"
+#define UACPI_PRIX64     "llX"
+#define UACPI_FMT64(val) ((unsigned long long)(val))

dev/acpi/meson.build

@@ -0,0 +1,15 @@
+uacpi = subproject('uacpi')
+
+kernel_sources += uacpi.get_variable('sources')
+kernel_includes += uacpi.get_variable('includes')
+kernel_c_args += [
+    '-DUACPI_FORMATTED_LOGGING',
+    '-DUACPI_BAREBONES_MODE', # TODO
+    '-DUACPI_OVERRIDE_TYPES',
+]
+# For uacpi_types.h
+kernel_includes += include_directories('include')
+
+kernel_sources += files(
+    'uacpi_glue.c',
+)

dev/acpi/uacpi_glue.c

@@ -0,0 +1,45 @@
+#include <zinnia/console.h>
+#include <zinnia/init.h>
+#include <zinnia/mmio.h>
+#include <zinnia/pmap.h>
+#include <zinnia/print.h>
+#include <zinnia/utils.h>
+#include <zinnia/virt.h>
+#include <zinnia/vma.h>
+#include <stdarg.h>
+#include <uacpi/kernel_api.h>
+#include <uacpi/status.h>
+#include <uacpi/types.h>
+
+uacpi_status uacpi_kernel_get_rsdp(uacpi_phys_addr* out_rsdp_address) {
+    *out_rsdp_address = (uacpi_phys_addr)rsdp_addr;
+    return UACPI_STATUS_OK;
+}
+
+void* uacpi_kernel_map(uacpi_phys_addr addr, uacpi_size len) {
+    uintptr_t vaddr = vm_alloc(len);
+    for (size_t i = 0; i < len; i += arch_mem_page_size()) {
+        pmap_map(&kernel_vma.pmap, vaddr + i, addr + i, PROT_READ | PROT_WRITE, CACHE_ANY);
+    }
+
+    return (void*)vaddr;
+}
+
+void uacpi_kernel_unmap(void* addr, uacpi_size len) {
+    // TODO
+}
+
+void uacpi_kernel_log(uacpi_log_level lvl, const uacpi_char* msg, ...) {
+    console_write("uacpi: ", 7);
+
+    va_list args;
+    va_start(args, msg);
+
+    kvprintf(msg, args);
+
+    va_end(args);
+}
+
+void uacpi_kernel_vlog(uacpi_log_level lvl, const uacpi_char* msg, uacpi_va_list args) {
+    kvprintf(msg, args);
+}

dev/common/meson.build

@@ -0,0 +1,3 @@
+kernel_sources += files(
+    'memfiles.c',
+)

dev/meson.build

@@ -0,0 +1,9 @@
+subdir('common')
+
+if cfg.get('CONFIG_ACPI', 0) == 1
+    subdir('acpi')
+endif
+
+if cfg.get('CONFIG_DT', 0) == 1
+    subdir('dt')
+endif