From cbb9ff469caa3083b4960bbe60c8ffa9d99c52fc Mon Sep 17 00:00:00 2001
From: Maksymilian Wilczynski <maksw@maksw.pl>
Date: Mon, 4 May 2026 08:36:48 +0200
Subject: [PATCH] add NTLITE_DRIVE and NTLITE_NTPATH so i can work on my pc and
 my laptop, fix dynamic driver loading

---
 OVMF/OVMF_VARS_4M.fd   | Bin 540672 -> 540672 bytes
 OVMF/OVMF_VARS_4M_d.fd | Bin 540672 -> 540672 bytes
 build.bat              |   2 +-
 code/kernel/kmain.c    |  14 ++++++--------
 readme.md              |   7 ++++---
 run.bat                |   2 +-
 runa.bat               |   2 +-
 runad.bat              |   2 +-
 rund.bat               |   2 +-
 9 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/OVMF/OVMF_VARS_4M.fd b/OVMF/OVMF_VARS_4M.fd
index 91d56fa414375a131b00773f55a1c429c54170d3..4eebbdac36c104a51b00427e95d7c6d2688f308b 100644
GIT binary patch
delta 85
zcmZo@P;3CAEsRE&Ci?|BZ7;dRc!_KCyWCx@jP{!+26YQCIshq8fyrsAN|Oup6c`<W
k+>2c8Zg&}hm}$G)U1l-HHUXA40oFDFwl)FwWda-q0G$sWBme*a

delta 52
zcmZo@P;3CAEsRE&re9-ba@t;UiSZIw`zt;sAZFfPAi}iEs7-*SO@OscfUQk{eVG7<
F0RR&<5t0A^

diff --git a/OVMF/OVMF_VARS_4M_d.fd b/OVMF/OVMF_VARS_4M_d.fd
index c075991197f893f92d38e4517823bad5833e1c78..a873cd4a38db6a4f4da1b52ec1f80df2297a9b14 100644
GIT binary patch
delta 961
zcmZo@P;6*W+~B9jXfxSg&z;$Zfqmjb`N=!<jsXSg^$)`YQVfbf%*l?N%9H;XSWHe)
zRhe9%r@*Pk%)qcJ6rzijkAZ>V$z(@W;mH^DmQDVoFU!a{S-`*uY?3PDVW<q-<bC?J
za9Mp;6z!A1ifRl(;0pAZfeL_5QDtIcoV-s@0!6pB79$G-BZ~;b?5L==*d0FZEupCw
z_qBLGV&)SDItB$yPSlrzTgC=*t1`&I9dMgSG)xv6HehdG#Beu>rb(hY&6y&niE2ZG
zWubCO=<4JghkbPu&+g$k63)cT!N9=G*iiqUh2j7I|0qHK3l?*vg{i0p5q6<iv>RrT
z3K2U0Pqs7An!HEv5HuC-glYz-BGO#?5IMp+U=c=|8B&uS45q<y0;9m>kJ{3cB@Crl
z*@3yhcJh7=RmLEon4-ElFnKWou?~YfLlHwMLlT1mgA+qO5SB3H0Les#6oyoWqRH{P
z(jq#B>$Z07+2}kc>Gck^yRqz`$eC=QqB1#wlco8OLHi#AMj&R|{>Om1;#`{mOPc^|
On*dvz0Q)il4g&!6QUH(u

delta 79
zcmZo@P;6*W+~B7-`INTO<N`gl$wn$llNT7WOfIlFG}+4r$ktyp`JDZf<|N1VBu7Rd
hX4;<Q$UN`d<_nHJ0&M~;Z33)q0&Hyp?8^i=3;?|(99aMW

diff --git a/build.bat b/build.bat
index 9b37aa7..06cbeba 100644
--- a/build.bat
+++ b/build.bat
@@ -3,7 +3,7 @@ setlocal enabledelayedexpansion
 
 set ROOT=%~dp0.
 set SRC=%ROOT%\code
-set DEST=G:\
+set DEST=%NTLITE_DRIVE%
 
 if exist "obj" rd /s /q "obj"
 if exist "bin" rd /s /q "bin"
diff --git a/code/kernel/kmain.c b/code/kernel/kmain.c
index ba410c3..9bb2793 100644
--- a/code/kernel/kmain.c
+++ b/code/kernel/kmain.c
@@ -107,21 +107,19 @@ static void InitializeDrivers(BOOT_INFO* bootInfo, const HAL_API* hal) {
 
         // Load the driver
         size_t len = strlen(runtimeKeys[i]);
-
-        // Assemble the path
-        // "drivers\" is 8 chars; +1 for the NUL terminator already in len.
-        size_t pathLen = 8 + len + 1;   // len already includes the NUL from strlen+1 above
-        char *path = MmAllocatePool(pathLen);
+        char* path = MmAllocatePool(len + 10);
         if (!path) {
-            DbgPrint("InitializeDrivers: OOM building driver path\n");
+            DbgPrint("KernelMain: Failed to allocate memory for driver path. How?\n");
             continue;
         }
+
+        // memcpy manouvers
         memcpy(path, "drivers\\", 8);
-        memcpy(path + 8, runtimeKeys[i], len);   // len includes the NUL
+        memcpy(path + 8, runtimeKeys[i], len + 1);
 
         s = IoOpenFile(path, &f);
         if (s != STATUS_SUCCESS) {
-            DbgPrint("InitializeDrivers: Failed to open runtime driver: %s\n", runtimeKeys[i]);
+            DbgPrint("InitializeDrivers: Failed to open runtime driver: %s (%s)\n", runtimeKeys[i], path);
             continue; // Skip this driver but keep going with others
         }
 
diff --git a/readme.md b/readme.md
index acac5c5..158622c 100644
--- a/readme.md
+++ b/readme.md
@@ -25,12 +25,13 @@ It boots into a shell.
 
 ## how 2 build
 
+* open env variables
+* set `NTLITE_DRIVE` as your thumbdrive (ex. `G:`)
+* set `NTLITE_NTPATH` as your thumbdrive (ex. `\\.\PhysicalDrive7`)
 * open vs x64 build tools
 * cd into this directory
 * `build.bat`
-* open `run.bat`/`rund.bat`/`runa.bat`/`runad.bat`
-* replace `\\.\PhysicalDrive7` with your thumbdrive partition
-* `run.bat`/`rund.bat`/`runa.bat`/`runad.bat`
+* `run.bat`(ide)/`rund.bat`(ide, debug)/`runa.bat`(ahci)/`runad.bat`(ahci, debug)
 * enjoy
 
 ## how it looks when built
diff --git a/run.bat b/run.bat
index 34a2c91..6c6b6ef 100644
--- a/run.bat
+++ b/run.bat
@@ -1 +1 @@
-@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M.fd -drive format=raw,file=\\.\PhysicalDrive7 -serial stdio
+@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M.fd -drive format=raw,file=%NTLITE_NTPATH% -serial stdio
diff --git a/runa.bat b/runa.bat
index 2027537..1a48adc 100644
--- a/runa.bat
+++ b/runa.bat
@@ -1 +1 @@
-@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M_d.fd -device ahci,id=ahci -drive format=raw,file=\\.\PhysicalDrive7,if=none,id=disk0 -device ide-hd,bus=ahci.0,drive=disk0 -serial stdio
+@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M_d.fd -device ahci,id=ahci -drive format=raw,file=%NTLITE_NTPATH%,if=none,id=disk0 -device ide-hd,bus=ahci.0,drive=disk0 -serial stdio
diff --git a/runad.bat b/runad.bat
index fa2278a..f9ebbb6 100644
--- a/runad.bat
+++ b/runad.bat
@@ -1 +1 @@
-@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M_d.fd -device ahci,id=ahci -drive format=raw,file=\\.\PhysicalDrive7,if=none,id=disk0 -device ide-hd,bus=ahci.0,drive=disk0 -m 4G -serial stdio -d in_asm,cpu_reset,int -D qemu.log -no-reboot -no-shutdown
+@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M_d.fd -device ahci,id=ahci -drive format=raw,file=%NTLITE_NTPATH%,if=none,id=disk0 -device ide-hd,bus=ahci.0,drive=disk0 -m 4G -serial stdio -d in_asm,cpu_reset,int -D qemu.log -no-reboot -no-shutdown
diff --git a/rund.bat b/rund.bat
index 4c5cff4..a597b1d 100644
--- a/rund.bat
+++ b/rund.bat
@@ -1 +1 @@
-@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M.fd -drive format=raw,file=\\.\PhysicalDrive7 -m 4G -serial stdio -d in_asm,cpu_reset,int -D qemu.log -no-reboot -no-shutdown
+@start qemu-system-x86_64 -drive if=pflash,format=raw,readonly=on,file=OVMF\OVMF_CODE_4M.fd -drive if=pflash,format=raw,file=OVMF\OVMF_VARS_4M.fd -drive format=raw,file=%NTLITE_NTPATH% -m 4G -serial stdio -d in_asm,cpu_reset,int -D qemu.log -no-reboot -no-shutdown