Put BSS clearing in firstrun

[netwatch.git] / aseg / firstrun.c

diff --git a/aseg/firstrun.c b/aseg/firstrun.c
index c6eab7b29edaa736c3ecd75ef38d300d314027cd..9589a13432cf30db6a88e3d6780032d15fa2da33 100644 (file)
--- a/aseg/firstrun.c
+++ b/aseg/firstrun.c
@@ -3,8 +3,20 @@
 #include <pci.h>
 #include <reg-82801b.h>
 #include "vga-overlay.h"
+#include <smram.h>
+
+extern int _bss, _bssend;
 
 void __firstrun_start() {
+       unsigned char *bp;
+       smram_state_t smram;
+       
+       smram = smram_save_state();
+       smram_tseg_set_state(SMRAM_TSEG_OPEN);
+       
+       for (bp = (void *)&_bss; (void *)bp < (void *)&_bssend; bp++)
+               *bp = 0;
+       
        dologf("NetWatch running");
 
        /* Try really hard to shut up USB_LEGKEY. */
@@ -17,5 +29,7 @@ void __firstrun_start() {
        outb(0x830, inb(0x830) | ICH2_SMI_EN_SWSMI_TMR_EN);
        outb(0x848, ICH2_DEVTRAP_EN_KBC_TRP_EN);
        smi_enable();
+       
+       smram_restore_state(smram);
 }