From 5bc9ff4fd13f1dbf3c229a8bed624f6055a8a1f1 Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Sat, 21 Feb 2026 23:25:54 +0000
Subject: [PATCH] cmake: add support for cd-rom booting via Bochs

---
 arch/x86_64/Arch.cmake   |  1 +
 arch/x86_64/Bochs.cmake  | 18 ++++++++++++++
 arch/x86_64/bochsrc.bxrc | 53 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 72 insertions(+)
 create mode 100644 arch/x86_64/Bochs.cmake
 create mode 100644 arch/x86_64/bochsrc.bxrc

diff --git a/arch/x86_64/Arch.cmake b/arch/x86_64/Arch.cmake
index c23a48f..abdd782 100644
--- a/arch/x86_64/Arch.cmake
+++ b/arch/x86_64/Arch.cmake
@@ -1,2 +1,3 @@
 include(System-Disk)
 include(QEMU)
+include(Bochs)
diff --git a/arch/x86_64/Bochs.cmake b/arch/x86_64/Bochs.cmake
new file mode 100644
index 0000000..e2f95d5
--- /dev/null
+++ b/arch/x86_64/Bochs.cmake
@@ -0,0 +1,18 @@
+find_program(BOCHS bochs)
+
+if (NOT BOCHS)
+	message(STATUS "Bochs: cannot find bochs")
+	return()
+endif ()
+
+if (NOT TARGET cdrom)
+	message(STATUS "Bochs: CD-ROM image creation is unavailable. Cannot use bochs")
+	return()
+endif ()
+
+message(STATUS "Bochs: Enable CD-ROM boot")
+add_custom_target(run-cdrom-bochs
+	COMMAND ${BOCHS} -q -f ${CMAKE_SOURCE_DIR}/arch/${CMAKE_SYSTEM_PROCESSOR}/bochsrc.bxrc
+	WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+	USES_TERMINAL
+	DEPENDS cdrom)
diff --git a/arch/x86_64/bochsrc.bxrc b/arch/x86_64/bochsrc.bxrc
new file mode 100644
index 0000000..f4acbe1
--- /dev/null
+++ b/arch/x86_64/bochsrc.bxrc
@@ -0,0 +1,53 @@
+# configuration file generated by Bochs
+plugin_ctrl: unmapped=true, biosdev=true, speaker=true, extfpuirq=true, parallel=true, serial=true, iodebug=true
+config_interface: textconfig
+display_library: sdl2
+memory: guest=128, host=128, block_size=128
+romimage: file="/usr/local/share/bochs/BIOS-bochs-latest", address=0x00000000, options=none, flash_data=none
+vgaromimage: file="/usr/local/share/bochs/VGABIOS-lgpl-latest.bin"
+boot: cdrom
+floppy_bootsig_check: disabled=0
+floppya: type=1_44
+# no floppyb
+ata0: enabled=true, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
+ata0-master: type=cdrom, path="rosetta-system.iso", status=inserted, model="Generic 1234", biosdetect=auto
+ata0-slave: type=none
+ata1: enabled=true, ioaddr1=0x170, ioaddr2=0x370, irq=15
+ata1-master: type=none
+ata1-slave: type=none
+ata2: enabled=false
+ata3: enabled=false
+optromimage1: file=none
+optromimage2: file=none
+optromimage3: file=none
+optromimage4: file=none
+optramimage1: file=none
+optramimage2: file=none
+optramimage3: file=none
+optramimage4: file=none
+pci: enabled=1, chipset=i440fx, slot1=none, slot2=none, slot3=none, slot4=none, slot5=none
+vga: extension=vbe, update_freq=10, realtime=1, ddc=builtin, vbe_memsize=16
+cpu: count=1:1:1, ips=4000000, quantum=16, model=core2_penryn_t9600, reset_on_triple_fault=1, cpuid_limit_winnt=0, ignore_bad_msrs=1, mwait_is_nop=0
+print_timestamps: enabled=0
+debugger_log: -
+magic_break: enabled=1 0x0
+port_e9_hack: enabled=false, all_rings=false
+iodebug: all_rings=0
+private_colormap: enabled=0
+clock: sync=none, time0=local, rtc_sync=0
+# no cmosimage
+log: -
+logprefix: %t%e%d
+debug: action=ignore
+info: action=report
+error: action=report
+panic: action=ask
+keyboard: type=mf, serial_delay=150, paste_delay=100000, user_shortcut=none
+mouse: type=ps2, enabled=false, toggle=ctrl+mbutton
+speaker: enabled=true, mode=system
+parport1: enabled=true, file=none
+parport2: enabled=false
+com1: enabled=true, mode=null
+com2: enabled=false
+com3: enabled=false
+com4: enabled=false