more aseg/grubload rearrangements

diff --git a/aseg/Makefile b/aseg/Makefile
index fd1efa99f15a731769eb602c9e30d22107d1d0e1..5033a5545116a52d5e49cb04dce7f3e5ec07d1e0 100644 (file)
--- a/aseg/Makefile
+++ b/aseg/Makefile
@@ -1,17 +1,17 @@
 CC=gcc
 CFLAGS=-I../include -I../include/raw -nostdlib -nostdinc -fno-builtin -D__RAW__
-OBJS=counter.o ../pci/pci-raw.o ../lib/minilib.o ../lib/console.o
+OBJS=counter.o firstrun.o ../pci/pci-raw.o ../lib/minilib.o ../lib/console.o
 
 all: aseg.elf
 
-aseg.bin: aseg.asm
-       nasm -o aseg.bin aseg.asm
-
-aseg.o: aseg.bin
-       objcopy -I binary -B i386 -O elf32-i386 aseg.bin aseg.o
-
 aseg.elf: aseg.lds aseg.o $(OBJS)
        ld -o aseg.elf -T aseg.lds $(OBJS)
 
 clean:
        rm -f $(OBJS) aseg.elf aseg.bin aseg.o
+
+
+%.o: %.asm
+       nasm -o $@.bin $<
+       objcopy -I binary -B i386 -O elf32-i386 $@.bin $@
+       rm -f $@.bin

diff --git a/aseg/aseg.lds b/aseg/aseg.lds
index a3a8ecefbd67d7c97b56b8282e8c063a4abdbdb1..290502701ab32ca594096835919134208b24a3c4 100644 (file)
--- a/aseg/aseg.lds
+++ b/aseg/aseg.lds
@@ -26,4 +26,11 @@ SECTIONS
                . = ALIGN(0x10);
                _stacktop = .;
        }
+
+       . = 0x10000;
+       .info : {
+               _start = .;
+               LONG(0x5754454E);
+               LONG(__firstrun_start);
+       }
 }

diff --git a/aseg/firstrun.c b/aseg/firstrun.c
new file mode 100644 (file)
index 0000000..ace70c6
--- /dev/null
+++ b/aseg/firstrun.c
@@ -0,0 +1,27 @@
+#include <io.h>
+
+void __firstrun_start() {
+/*
+       puts("Current USB state is: ");
+       puthex(pci_read16(0, 31, 2, 0xC0));
+       puts(" ");
+       puthex(pci_read16(0, 31, 4, 0xC0));
+       puts("\n");
+       puts("Current SMI state is: ");
+       puthex(inl(0x830));
+       puts("\n");
+       puts("Current SMRAMC state is: ");
+       puthex(pci_read8(0, 0, 0, 0x70));
+       puts("\n");
+*/
+
+       /* Try really hard to shut up USB_LEGKEY. */
+       pci_write16(0, 31, 2, 0xC0, pci_read16(0, 31, 2, 0xC0));
+       pci_write16(0, 31, 2, 0xC0, 0);
+       pci_write16(0, 31, 4, 0xC0, pci_read16(0, 31, 4, 0xC0));
+       pci_write16(0, 31, 4, 0xC0, 0);
+
+       /* Turn on the SMIs we want */
+       outb(0x830, inb(0x830) | 0x41);
+}
+

diff --git a/grubload/multiboot_c.c b/grubload/multiboot_c.c
index c75e830aa90fdcb9f6a6eea3659a87ce78e8c117..50aca06e665d2e2abb9a5f13fa845640cd9e45ac 100644 (file)
--- a/grubload/multiboot_c.c
+++ b/grubload/multiboot_c.c
@@ -2,6 +2,8 @@
 #include <io.h>
 #include <smram.h>
 
+#define INFO_SIGNATURE 0x5754454E
+
 extern char _binary_realmode_bin_start[];
 extern int _binary_realmode_bin_size;
 
@@ -23,9 +25,15 @@ struct mod_info
        void *reserved;
 };
 
+struct info_section
+{
+       unsigned int signature;
+       void (*firstrun)();
+};
+
 void c_start(unsigned int magic, struct mb_info *info)
 {
-       struct mod_info *mods = mods;
+       struct mod_info *mods = info->mods;
        unsigned short *grubptr = (unsigned short *)0x7CFE;
        unsigned char smramc;
        int i;
@@ -78,11 +86,19 @@ void c_start(unsigned int magic, struct mb_info *info)
        else
        {
                load_elf(mods[0].mod_start, mods[0].mod_end - mods[0].mod_start);
-               smram_restore_state(old_smramc);
+
+               struct info_section * info = (struct info_section *)0x10000;
+               if (info->signature != INFO_SIGNATURE)
+               {
+                       smram_restore_state(old_smramc);
+                       puts("Info section signature mismatch.\n");
+               }
+               else {
+                       info->firstrun();
+                       smram_restore_state(old_smramc);
+               }
        }
 
-       outb(0x830, inb(0x830) | 0x41); /* turn on the SMIs we want */
-       
        puts("Waiting for a bit before returning to real mode...");
        for (i=0; i<0x500000; i++)
        {