AHCI-Generic.cc: Disk Driver builtin improvements.

- Poll for CR in ahci_enable_and_probe.
- Init NeFS, not an AHCI device for portability.

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

3 files changed, 17 insertions, 8 deletions

diff --git a/ReadMe.md b/ReadMe.md
index 253d7d7c..1f0554bc 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -2,27 +2,28 @@
 
 # NeKernel
 
-## Requirements:
+
+
+## Required:
 
 - MinGW/GCC, Clang.
-- LibCompiler Runtime Headers and Toolchain.
 - Netwide Assembler.
 - Git.
 - BTB.
 
-## Installation:
+## Install:
 
 Clone repository:
 
 ```sh
 git clone git@github.com:ne-gh/kernel.git
 cd kernel
-./debug_ahci.sh # Generic AHCI target
+./debug_ata.sh # Generic ATA PIO target
 ```
 
-## Good first PRs
+## Good first PRs:
 
-- Contribute to the AHCI generic driver (PRDs are not being read)
+- Contribute to the AHCI generic driver, it's the current main effort to bring modern storage standards to the kernel.
 
 ## Warning:
 
diff --git a/dev/Kernel/HALKit/AMD64/HalKernelMain.cc b/dev/Kernel/HALKit/AMD64/HalKernelMain.cc
index 0e2247ad..e87e6fb1 100644
--- a/dev/Kernel/HALKit/AMD64/HalKernelMain.cc
+++ b/dev/Kernel/HALKit/AMD64/HalKernelMain.cc
@@ -94,7 +94,7 @@ EXTERN_C void hal_init_platform(
 
 EXTERN_C NeOS::Void hal_real_init(NeOS::Void) noexcept
 {
-	auto dev = NeOS::sk_init_ahci_device(NO);
+	NeOS::NeFS::fs_init_nefs();
 
 	NeOS::HAL::mp_get_cores(kHandoverHeader->f_HardwareTables.f_VendorPtr);
 
diff --git a/dev/Kernel/HALKit/AMD64/Storage/AHCI+Generic.cc b/dev/Kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
index 51db8054..ae0ae239 100644
--- a/dev/Kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
+++ b/dev/Kernel/HALKit/AMD64/Storage/AHCI+Generic.cc
@@ -73,7 +73,7 @@ STATIC Void drv_compute_disk_ahci() noexcept
 {
 	kSATASectorCount = 0UL;
 
-	const UInt16 kSzIdent = 512;
+	const UInt16 kSzIdent = kib_cast(1);
 
 	UInt8 identify_data[kSzIdent] = {0};
 
@@ -205,6 +205,7 @@ SizeT drv_get_size_ahci()
 	return drv_get_sector_count() * kAHCISectorSize;
 }
 
+/// @brief Enable Host and probe using the IDENTIFY command.
 STATIC Void ahci_enable_and_probe()
 {
 	if (kSATAHba->Bohc & kHBABohcBiosOwned)
@@ -213,9 +214,16 @@ STATIC Void ahci_enable_and_probe()
 
 		while (kSATAHba->Bohc & kHBABohcBiosOwned)
 		{
+			;
 		}
 	}
 
+	// Poll until ready.
+	while (kSATAHba->Ports[kSATAIndex].Cmd & kHBAPxCmdCR)
+	{
+		;
+	}
+
 	kSATAHba->Ports[kSATAIndex].Cmd |= kHBAPxCmdFre;
 	kSATAHba->Ports[kSATAIndex].Cmd |= kHBAPxCmdST;