Enhance experimental option rom "threading" - enable preemption.

[seabios.git] / src / post.c

diff --git a/src/post.c b/src/post.c
index a566b34bfdb847e5b0d000a7595b899eb841818c..42a27bcbd0471ba27d32c75f4c6a8dd318fadee6 100644 (file)
--- a/src/post.c
+++ b/src/post.c
@@ -22,6 +22,7 @@
 #include "usb.h" // usb_setup
 #include "smbios.h" // smbios_init
 #include "paravirt.h" // qemu_cfg_port_probe
+#include "ps2port.h" // ps2port_setup
 
 void
 __set_irq(int vector, void *loc)
@@ -159,50 +160,69 @@ init_bios_tables(void)
 static void
 post()
 {
+    // Detect and init ram.
     init_ivt();
     init_bda();
+    memmap_setup();
+    ram_probe();
+    malloc_setup();
+    thread_setup();
 
-    qemu_cfg_port_probe();
-
+    // Init base pc hardware.
     pic_setup();
     timer_setup();
     mathcp_setup();
 
+    // Initialize smp
+    qemu_cfg_port_probe();
     smp_probe_setup();
-    memmap_setup();
-    ram_probe();
     mtrr_setup();
     smp_probe();
-    malloc_setup();
-    pmm_setup();
 
+    // Initialize pci
     pci_setup();
     smm_init();
 
+    // Setup interfaces that option roms may need
+    pmm_setup();
     pnp_setup();
-    vga_setup();
+    kbd_setup();
+    mouse_setup();
+    init_bios_tables();
 
+    // Run vga option rom (if running synchronously)
+    if (!CONFIG_THREADS || !CONFIG_THREAD_OPTIONROMS)
+        vga_setup();
+
+    // Initialize hardware devices
     usb_setup();
-    kbd_setup();
+    ps2port_setup();
     lpt_setup();
     serial_setup();
-    mouse_setup();
-
-    init_bios_tables();
 
     boot_setup();
-
     drive_setup();
     cdemu_setup();
     floppy_setup();
     ata_setup();
     ramdisk_setup();
 
-    optionrom_setup();
+    // Run option roms
+    if (CONFIG_THREADS && CONFIG_THREAD_OPTIONROMS) {
+        // Run option roms while hw init still in progress.
+        vga_setup();
+        optionrom_setup();
+        wait_threads();
+    } else {
+        // Wait for hw init to finish and run non-vga option roms.
+        wait_threads();
+        optionrom_setup();
+    }
 
-    // Run BCVs
+    // Run BCVs and show optional boot menu
     boot_prep();
 
+    // Finalize data structures before boot
     pmm_finalize();
     malloc_finalize();
     memmap_finalize();