Bootloader: Improve PATA support, but will use UEFI SimpleFile to get

the kernel image.

Signed-off-by: Amlal El Mahrouss <amlalelmahrouss@icloud.com>

2 files changed, 47 insertions, 7 deletions

diff --git a/Private/NewBoot/BootKit/Arch/ATA.hxx b/Private/NewBoot/BootKit/Arch/ATA.hxx
index 8327f5c8..6e692c3d 100644
--- a/Private/NewBoot/BootKit/Arch/ATA.hxx
+++ b/Private/NewBoot/BootKit/Arch/ATA.hxx
@@ -95,6 +95,9 @@ using namespace HCore;
 #define ATA_PRIMARY 0x00
 #define ATA_SECONDARY 0x01
 
+#define ATA_CYL_LOW 4
+#define ATA_CYL_HIGH 5
+
 // IO Direction
 #define ATA_READ 0x00
 #define ATA_WRITE 0x013
@@ -114,25 +117,25 @@ UInt16 ATAReadLba(UInt32 Lba, UInt8 Bus, Boolean Master);
 Void ATAWriteLba(UInt16 Byte, UInt32 Lba, UInt8 Bus, Boolean Master);
 Boolean ATAIsDetected(Void);
 
-class ATAHelper final {
+class BATADevice final {
  public:
   enum {
     kPrimary = ATA_PRIMARY,
     kSecondary = ATA_SECONDARY,
   };
 
-  explicit ATAHelper() noexcept;
+  explicit BATADevice() noexcept;
 
-  HCORE_COPY_DEFAULT(ATAHelper);
+  HCORE_COPY_DEFAULT(BATADevice);
 
   struct ATATraits final {
     SizeT mBase{1024};
-    UInt8 mBus{kPrimary};
+    UInt16 mBus{kPrimary};
     Boolean mMaster{false};
   };
 
-  ATAHelper& Read(WideChar*, const SizeT&);
-  ATAHelper& Write(WideChar*, const SizeT&);
+  BATADevice& Read(WideChar*, const SizeT&);
+  BATADevice& Write(WideChar*, const SizeT&);
 
   ATATraits& Traits();
 
diff --git a/Private/NewBoot/BootKit/BootKit.hxx b/Private/NewBoot/BootKit/BootKit.hxx
index 73bbce37..edd8015b 100644
--- a/Private/NewBoot/BootKit/BootKit.hxx
+++ b/Private/NewBoot/BootKit/BootKit.hxx
@@ -83,7 +83,7 @@ class BFileReader final {
   CharacterType mPath[255];
 
  private:
-  ATAHelper mHelper;
+  BATADevice mDevice;
 };
 
 /***********************************************************************************/
@@ -92,3 +92,40 @@ class BFileReader final {
 
 #include <BootKit/Platform.hxx>
 #include <BootKit/Protocol.hxx>
+
+#ifdef __EFI_x86_64__
+
+inline void out8(UInt16 port, UInt8 value) {
+  asm volatile("outb %%al, %1" : : "a"(value), "Nd"(port) : "memory");
+}
+
+inline void out16(UInt16 port, UInt16 value) {
+  asm volatile("outw %%ax, %1" : : "a"(value), "Nd"(port) : "memory");
+}
+
+inline void out32(UInt16 port, UInt32 value) {
+  asm volatile("outl %%eax, %1" : : "a"(value), "Nd"(port) : "memory");
+}
+
+inline UInt8 in8(UInt16 port) {
+  UInt8 value = 0UL;
+  asm volatile("inb %1, %%al" : "=a"(value) : "Nd"(port) : "memory");
+
+  return value;
+}
+
+inline UInt16 in16(UInt16 port) {
+  UInt16 value = 0UL;
+  asm volatile("inw %1, %%ax" : "=a"(value) : "Nd"(port) : "memory");
+
+  return value;
+}
+
+inline UInt32 in32(UInt16 port) {
+  UInt32 value = 0UL;
+  asm volatile("inl %1, %%eax" : "=a"(value) : "Nd"(port) : "memory");
+
+  return value;
+}
+
+#endif  // __EFI_x86_64__
\ No newline at end of file