- To reduce confuse rename the parts of linuxbios bios that run from
ram linuxbios_ram instead of linuxbios_c and linuxbios_payload... - Reordered the linker sections so the LinuxBIOS fallback image can take more the 64KiB on x86 - ROM_IMAGE_SIZE now will work when it is specified as larger than 64KiB. - Tweaked the reset16.inc and reset16.lds to move the sanity check to see if everything will work. - Start using romcc's built in preprocessor (This will simplify header compiler checks) - Add helper functions for examining all of the resources - Remove debug strings from chip.h - Add llshell to src/arch/i386/llshell (Sometime later I can try it...) - Add the ability to catch exceptions on x86 - Add gdb_stub support to x86 - Removed old cpu options - Added an option so we can detect movnti support - Remove some duplicate definitions from pci_ids.h - Remove the 64bit resource code in amdk8/northbridge.c in preparation for making it generic - Minor romcc bug fixes git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1727 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman
@@ -306,6 +306,12 @@ struct lb_memory *get_lb_mem(void)
|
||||
return mem_ranges;
|
||||
}
|
||||
|
||||
static void build_lb_mem_range(void *gp, struct device *dev, struct resource *res)
|
||||
{
|
||||
struct lb_memory *mem = gp;
|
||||
lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
|
||||
}
|
||||
|
||||
static struct lb_memory *build_lb_mem(struct lb_header *head)
|
||||
{
|
||||
struct lb_memory *mem;
|
||||
@@ -316,17 +322,9 @@ static struct lb_memory *build_lb_mem(struct lb_header *head)
|
||||
mem_ranges = mem;
|
||||
|
||||
/* Build the raw table of memory */
|
||||
for(dev = all_devices; dev; dev = dev->next) {
|
||||
struct resource *res, *last;
|
||||
last = &dev->resource[dev->resources];
|
||||
for(res = &dev->resource[0]; res < last; res++) {
|
||||
if (!(res->flags & IORESOURCE_MEM) ||
|
||||
!(res->flags & IORESOURCE_CACHEABLE)) {
|
||||
continue;
|
||||
}
|
||||
lb_memory_range(mem, LB_MEM_RAM, res->base, res->size);
|
||||
}
|
||||
}
|
||||
search_global_resources(
|
||||
IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
|
||||
build_lb_mem_range, mem);
|
||||
lb_cleanup_memory_ranges(mem);
|
||||
return mem;
|
||||
}
|
||||
|
||||
@@ -30,10 +30,17 @@ OUTPUT_ARCH(i386)
|
||||
ENTRY(_start)
|
||||
|
||||
TARGET(binary)
|
||||
INPUT(linuxbios_payload)
|
||||
INPUT(linuxbios_ram.rom)
|
||||
SECTIONS
|
||||
{
|
||||
. = _ROMBASE;
|
||||
|
||||
.ram . : {
|
||||
_ram = . ;
|
||||
linuxbios_ram.rom(*)
|
||||
_eram = . ;
|
||||
}
|
||||
|
||||
/* This section might be better named .setup */
|
||||
.rom . : {
|
||||
_rom = .;
|
||||
@@ -42,18 +49,13 @@ SECTIONS
|
||||
. = ALIGN(16);
|
||||
_erom = .;
|
||||
}
|
||||
|
||||
_lrom = LOADADDR(.rom);
|
||||
_elrom = LOADADDR(.rom) + SIZEOF(.rom);
|
||||
|
||||
.payload . : {
|
||||
_payload = . ;
|
||||
linuxbios_payload(*)
|
||||
_epayload = . ;
|
||||
}
|
||||
_iseg = _RAMBASE;
|
||||
_eiseg = _iseg + SIZEOF(.payload);
|
||||
_liseg = _payload;
|
||||
_eliseg = _epayload;
|
||||
_eiseg = _iseg + SIZEOF(.ram);
|
||||
_liseg = _ram;
|
||||
_eliseg = _eram;
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.comment)
|
||||
|
||||
@@ -7,4 +7,4 @@
|
||||
object c_start.S
|
||||
object cpu.c
|
||||
object pci_ops.c
|
||||
|
||||
object exception.c
|
||||
|
||||
@@ -1,5 +1,6 @@
|
||||
#include <arch/asm.h>
|
||||
#include <arch/intel.h>
|
||||
|
||||
.section ".text"
|
||||
.code32
|
||||
.globl _start
|
||||
@@ -47,6 +48,24 @@ _start:
|
||||
/* Save the stack location */
|
||||
movl %esp, %ebp
|
||||
|
||||
/* Initialize the Interrupt Descriptor table */
|
||||
leal _idt, %edi
|
||||
leal vec0, %ebx
|
||||
movl $(0x10 << 16), %eax /* cs selector */
|
||||
|
||||
1: movw %bx, %ax
|
||||
movl %ebx, %edx
|
||||
movw $0x8E00, %dx /* Interrupt gate - dpl=0, present */
|
||||
movl %eax, 0(%edi)
|
||||
movl %edx, 4(%edi)
|
||||
addl $6, %ebx
|
||||
addl $8, %edi
|
||||
cmpl $_idt_end, %edi
|
||||
jne 1b
|
||||
|
||||
/* Load the Interrupt descriptor table */
|
||||
lidt idtarg
|
||||
|
||||
/*
|
||||
* Now we are finished. Memory is up, data is copied and
|
||||
* bss is cleared. Now we call the main routine and
|
||||
@@ -64,15 +83,170 @@ _start:
|
||||
intel_chip_post_macro(0xee) /* post fe */
|
||||
hlt
|
||||
jmp .Lhlt
|
||||
|
||||
vec0:
|
||||
pushl $0 /* error code */
|
||||
pushl $0 /* vector */
|
||||
jmp int_hand
|
||||
vec1:
|
||||
pushl $0 /* error code */
|
||||
pushl $1 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec2:
|
||||
pushl $0 /* error code */
|
||||
pushl $2 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec3:
|
||||
pushl $0 /* error code */
|
||||
pushl $3 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec4:
|
||||
pushl $0 /* error code */
|
||||
pushl $4 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec5:
|
||||
pushl $0 /* error code */
|
||||
pushl $5 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec6:
|
||||
pushl $0 /* error code */
|
||||
pushl $6 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec7:
|
||||
pushl $0 /* error code */
|
||||
pushl $7 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec8:
|
||||
/* error code */
|
||||
pushl $8 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec9:
|
||||
pushl $0 /* error code */
|
||||
pushl $9 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec10:
|
||||
/* error code */
|
||||
pushl $10 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec11:
|
||||
/* error code */
|
||||
pushl $11 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec12:
|
||||
/* error code */
|
||||
pushl $12 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec13:
|
||||
/* error code */
|
||||
pushl $13 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec14:
|
||||
/* error code */
|
||||
pushl $14 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec15:
|
||||
pushl $0 /* error code */
|
||||
pushl $15 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec16:
|
||||
pushl $0 /* error code */
|
||||
pushl $16 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec17:
|
||||
/* error code */
|
||||
pushl $17 /* vector */
|
||||
jmp int_hand
|
||||
.word 0x9090
|
||||
|
||||
vec18:
|
||||
pushl $0 /* error code */
|
||||
pushl $18 /* vector */
|
||||
jmp int_hand
|
||||
|
||||
vec19:
|
||||
pushl $0 /* error code */
|
||||
pushl $19 /* vector */
|
||||
jmp int_hand
|
||||
int_hand:
|
||||
/* At this point on the stack there is:
|
||||
* 0(%esp) vector
|
||||
* 4(%esp) error code
|
||||
* 8(%esp) eip
|
||||
* 12(%esp) cs
|
||||
* 16(%esp) eflags
|
||||
*/
|
||||
pushl %edi
|
||||
pushl %esi
|
||||
pushl %ebp
|
||||
/* Original stack pointer */
|
||||
leal 32(%esp), %ebp
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edx
|
||||
pushl %ecx
|
||||
pushl %eax
|
||||
|
||||
pushl %esp /* Pointer to structure on the stack */
|
||||
call x86_exception
|
||||
pop %eax /* Drop the pointer */
|
||||
|
||||
.globl gdt, gdt_end, gdt_limit
|
||||
popl %eax
|
||||
popl %ecx
|
||||
popl %edx
|
||||
popl %ebx
|
||||
popl %ebp /* Ignore saved %esp value */
|
||||
popl %ebp
|
||||
popl %esi
|
||||
popl %edi
|
||||
|
||||
addl $8, %esp /* pop of the vector and error code */
|
||||
|
||||
iret
|
||||
|
||||
#if CONFIG_GDB_STUB == 1
|
||||
|
||||
.globl gdb_stub_breakpoint
|
||||
gdb_stub_breakpoint:
|
||||
popl %eax /* Return address */
|
||||
pushfl
|
||||
pushl %cs
|
||||
pushl %eax /* Return address */
|
||||
pushl $0 /* No error code */
|
||||
pushl $32 /* vector 32 is user defined */
|
||||
jmp int_hand
|
||||
|
||||
#endif
|
||||
|
||||
.globl gdt, gdt_end, gdt_limit, idtarg
|
||||
|
||||
gdt_limit = gdt_end - gdt - 1 /* compute the table limit */
|
||||
gdtaddr:
|
||||
.word gdt_limit
|
||||
.long gdt /* we know the offset */
|
||||
|
||||
.data
|
||||
gdt:
|
||||
// selgdt 0
|
||||
.word 0x0000, 0x0000 /* dummy */
|
||||
@@ -112,4 +286,13 @@ gdt:
|
||||
#endif // defined(CONFIG_VGABIOS) && (CONFIG_VGABIOS == 1)
|
||||
gdt_end:
|
||||
|
||||
idtarg:
|
||||
.word _idt_end - _idt - 1 /* limit */
|
||||
.long _idt
|
||||
.word 0
|
||||
_idt:
|
||||
.fill 20, 8, 0 # idt is unitiailzed
|
||||
_idt_end:
|
||||
|
||||
.previous
|
||||
.code32
|
||||
|
||||
880
src/arch/i386/llshell/llshell.inc
Normal file
880
src/arch/i386/llshell/llshell.inc
Normal file
@@ -0,0 +1,880 @@
|
||||
jmp llshell_out
|
||||
|
||||
// (c) 2004 Bryan Chafy, This program is released under the GPL
|
||||
|
||||
// LLShell, A low level interactive debug shell
|
||||
// Designed to be an interactive shell that operates with zero
|
||||
// system resources. For example at initial boot.
|
||||
|
||||
// to use, jump to label "low_level_shell"
|
||||
// set %esp to the return address for exiting
|
||||
|
||||
|
||||
#define UART_BASEADDR $0x3f8
|
||||
#define resultreg %esi
|
||||
#define subroutinereg %edi
|
||||
#define freqtime $2193 // 1.93 * freq
|
||||
#define timertime $6000
|
||||
.equ sys_IOPL, 110
|
||||
|
||||
// .data
|
||||
// .text
|
||||
|
||||
welcome:
|
||||
.string "\r\n! Low Level Shell (LLShell) (c)2004 Bryan Chafy \r\n\r\n"
|
||||
prompt:
|
||||
.string "\r\n!> "
|
||||
badcmd:
|
||||
.string "bad command\r\n"
|
||||
sorry:
|
||||
.string "sorry, not yet implemented\r\n"
|
||||
cmds:
|
||||
.string "\r\nList of commands:\r\n \
|
||||
\r\nbeep -- pc speaker beep \
|
||||
\r\nrst (or RST) -- reset \
|
||||
\r\nout(b,w,l) <val> <port> -- raw out val at port \
|
||||
\r\nin(b,w,l) <port> -- show raw port value \
|
||||
\r\njmp <address> -- jmp to address (llshell addr is in eax) \
|
||||
\r\ncall <address> -- funcion call (assumes a working stack) \
|
||||
\r\ncli -- clear interrupts \
|
||||
\r\nsti -- enable interrupts \
|
||||
\r\npush <value> -- push value onto stack \
|
||||
\r\npop -- pop from stack and display \
|
||||
\r\nwm(b,w,l) <addr> <val> -- write mem \
|
||||
\r\ndm <addr> <lines> -- dump mem \
|
||||
\r\nmcp <src> <dst> <size> -- mem copy \
|
||||
\r\nmpat <pat> <dst> <size> -- mem pattern \
|
||||
\r\nmemt <begin> <end> -- memory test \
|
||||
\r\npcir(b,w,l) <loc> -- pci read config \
|
||||
\r\npciw(b,w,l) <loc> <val> -- pci write config \
|
||||
\r\ndl <addr> <size> -- memory download (display xor cheksum at completion) \
|
||||
\r\ncram <addr> <size> -- enable cache to be ram (experimental) \
|
||||
\r\nbaud <val> -- change baudrate (not yet implemented) \
|
||||
\r\nexit -- exit shell \
|
||||
\r\nAll values in hex (0x prefixing ok) \
|
||||
\r\n"
|
||||
|
||||
cr:
|
||||
.string "\r\n"
|
||||
spaces:
|
||||
.string " "
|
||||
|
||||
// .globl _start
|
||||
//ASSUME CS:@CODE, DS:@DATA
|
||||
|
||||
// _start:
|
||||
|
||||
// call ioperms
|
||||
|
||||
low_level_shell:
|
||||
|
||||
mov $preamble,subroutinereg
|
||||
jmp beep
|
||||
preamble:
|
||||
mov $welcome,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
readcommand:
|
||||
mov $prompt,resultreg
|
||||
mov $rcmd,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
rcmd:
|
||||
mov $readcommand,subroutinereg
|
||||
movl $0x0, resultreg
|
||||
|
||||
readchar:
|
||||
mov UART_BASEADDR+5,%dx
|
||||
in %dx, %al
|
||||
and $0x9f,%al
|
||||
test $0x01,%al
|
||||
jz readchar
|
||||
mov UART_BASEADDR,%dx
|
||||
in %dx,%al //char in al
|
||||
xchg %al,%ah
|
||||
|
||||
send_char:
|
||||
mov UART_BASEADDR+5,%dx
|
||||
us_wait:
|
||||
in %dx,%al
|
||||
test $0x20,%al
|
||||
jz us_wait
|
||||
mov UART_BASEADDR,%dx
|
||||
xchg %al,%ah
|
||||
out %al,%dx // output char
|
||||
|
||||
cmp $0x0D,%al //CR
|
||||
jnz eval_char
|
||||
mov $0x0A,%ah
|
||||
jmp send_char
|
||||
|
||||
eval_char:
|
||||
cmp $0x20,%al //space
|
||||
jz cmdtable
|
||||
cmp $0x0A,%al //CR
|
||||
jz cmdtable
|
||||
cmp $0x08,%al //BS
|
||||
jnz additup
|
||||
//subit:
|
||||
shr $0x8,resultreg
|
||||
jmp readchar
|
||||
additup:
|
||||
shl $0x8,resultreg
|
||||
and $0xff,%eax
|
||||
add %eax,resultreg
|
||||
jmp readchar
|
||||
|
||||
cmdtable:
|
||||
mov resultreg,%eax
|
||||
cmp $0,%eax
|
||||
jz readcommand
|
||||
cmp $0x74657374,%eax
|
||||
jz dotest
|
||||
cmp $0x68656c70,%eax
|
||||
jz dohelp
|
||||
cmp $0x0000003f,%eax
|
||||
jz dohelp
|
||||
cmp $0x6f757462,%eax
|
||||
jz dooutb
|
||||
cmp $0x6f757477,%eax
|
||||
jz dooutw
|
||||
cmp $0x6f75746c,%eax
|
||||
jz dooutd
|
||||
cmp $0x00696e62,%eax
|
||||
jz doinb
|
||||
cmp $0x00696e77,%eax
|
||||
jz doinw
|
||||
cmp $0x00696e6c,%eax
|
||||
jz doind
|
||||
cmp $0x63697262,%eax
|
||||
jz pcirb
|
||||
cmp $0x63697277,%eax
|
||||
jz pcirw
|
||||
cmp $0x6369726c,%eax
|
||||
jz pcirl
|
||||
cmp $0x63697762,%eax
|
||||
jz pciwb
|
||||
cmp $0x63697777,%eax
|
||||
jz pciww
|
||||
cmp $0x6369776c,%eax
|
||||
jz pciwl
|
||||
cmp $0x00776d62,%eax
|
||||
jz wmemb
|
||||
cmp $0x00776d77,%eax
|
||||
jz wmemw
|
||||
cmp $0x00776d6c,%eax
|
||||
jz wmeml
|
||||
cmp $0x0000646d,%eax
|
||||
jz dodmem
|
||||
cmp $0x6d656d74,%eax
|
||||
jz memt // mem test
|
||||
cmp $0x00727374,%eax
|
||||
jz rst // reset
|
||||
cmp $0x00525354,%eax
|
||||
jz RST
|
||||
cmp $0x62656570,%eax
|
||||
jz beep
|
||||
cmp $0x0000646c,%eax
|
||||
jz dodl // download to mem <loc> <size>
|
||||
cmp $0x006a6d70,%eax
|
||||
jz jmpto // jump to location (eax holds return addr)
|
||||
cmp $0x62617564,%eax
|
||||
jz baud // change baudrate
|
||||
cmp $0x00696e74,%eax
|
||||
jz doint // trigger an interrupt
|
||||
cmp $0x63616c6c,%eax
|
||||
jz callto // call assumes memory
|
||||
cmp $0x70757368,%eax
|
||||
jz dopush // assumes mem
|
||||
cmp $0x00706f70,%eax
|
||||
jz dopop // assumes mem
|
||||
cmp $0x6372616d,%eax
|
||||
jz cram // cache ram trick <location> <size>
|
||||
cmp $0x006d6370,%eax
|
||||
jz mcp // mem copy <src> <dst> <size>
|
||||
cmp $0x6d706174,%eax
|
||||
jz dopattern
|
||||
cmp $0x00636c69,%eax
|
||||
jz docli
|
||||
cmp $0x00737469,%eax
|
||||
jz dosti
|
||||
cmp $0x65786974,%eax
|
||||
jz doexit
|
||||
mov $badcmd,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
|
||||
readnibbles:
|
||||
movl $0x0, resultreg
|
||||
readit:
|
||||
mov UART_BASEADDR+5,%dx
|
||||
in %dx, %al
|
||||
and $0x9f,%al
|
||||
test $0x1,%al
|
||||
jz readit
|
||||
mov UART_BASEADDR,%dx
|
||||
in %dx,%al
|
||||
xchg %al,%ah
|
||||
|
||||
sendchar:
|
||||
mov UART_BASEADDR+5,%dx
|
||||
us_waitit:
|
||||
in %dx,%al
|
||||
test $0x20,%al
|
||||
jz us_waitit
|
||||
mov UART_BASEADDR,%dx
|
||||
xchg %al,%ah
|
||||
out %al,%dx // output char
|
||||
|
||||
cmp $0x78,%al
|
||||
jz readit
|
||||
cmp $0x0D,%al //CR
|
||||
jnz evalchar
|
||||
mov $0x0A,%ah
|
||||
jmp sendchar
|
||||
|
||||
evalchar:
|
||||
cmp $0x20,%al //space
|
||||
jz gosub
|
||||
cmp $0x0A,%al //CR
|
||||
jz gosub
|
||||
cmp $0x08,%al //BS
|
||||
jnz processchar
|
||||
//subit:
|
||||
shr $0x04,resultreg
|
||||
jmp readit
|
||||
processchar:
|
||||
cmp $0x3A,%al
|
||||
jl subnum
|
||||
cmp $0x47,%al
|
||||
jl subcaps
|
||||
//sublc:
|
||||
sub $0x57,%al
|
||||
jmp additupn
|
||||
subcaps:
|
||||
sub $0x37,%al
|
||||
jmp additupn
|
||||
subnum:
|
||||
sub $0x30,%al
|
||||
additupn:
|
||||
shl $0x04,resultreg
|
||||
and $0xf,%eax
|
||||
add %eax,resultreg
|
||||
jmp readit
|
||||
|
||||
gosub:
|
||||
jmp *subroutinereg
|
||||
|
||||
//intersubcall
|
||||
// eax,edx,esi,edi
|
||||
|
||||
// ebx,ecx,ebp,esp(?)
|
||||
// ds,es,fs,gs
|
||||
|
||||
dotest:
|
||||
mov $ramtest,resultreg
|
||||
mov $test1a,subroutinereg
|
||||
jmp displayhex
|
||||
test1a:
|
||||
mov $welcome,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
dodmem:
|
||||
|
||||
movl $dmem1a, subroutinereg
|
||||
jmp readnibbles
|
||||
dmem1a:
|
||||
mov resultreg,%ebx // address
|
||||
movl $dmem1b, subroutinereg
|
||||
jmp readnibbles
|
||||
dmem1b:
|
||||
mov resultreg,%ecx // length
|
||||
|
||||
dmemloop:
|
||||
mov %ebx,resultreg
|
||||
mov $daddr1,subroutinereg
|
||||
jmp displayhex
|
||||
daddr1:
|
||||
mov $spaces,resultreg
|
||||
mov $startshowm,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
startshowm:
|
||||
mov (%ebx),resultreg
|
||||
mov $showm1,subroutinereg
|
||||
jmp displayhexlinear
|
||||
showm1:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showm2,subroutinereg
|
||||
jmp displayhexlinear
|
||||
showm2:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showm3,subroutinereg
|
||||
jmp displayhexlinear
|
||||
showm3:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showa0,subroutinereg
|
||||
jmp displayhexlinear
|
||||
|
||||
showa0:
|
||||
sub $0xC,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showa1,subroutinereg
|
||||
jmp displayasciilinear
|
||||
showa1:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showa2,subroutinereg
|
||||
jmp displayasciilinear
|
||||
showa2:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $showa3,subroutinereg
|
||||
jmp displayasciilinear
|
||||
showa3:
|
||||
add $0x04,%ebx
|
||||
mov (%ebx),resultreg
|
||||
mov $doneshow,subroutinereg
|
||||
jmp displayasciilinear
|
||||
doneshow:
|
||||
mov $cr,resultreg
|
||||
mov $doneshow1,subroutinereg
|
||||
jmp displaystring
|
||||
doneshow1:
|
||||
dec %cx
|
||||
cmp $0x0,%cx
|
||||
jz exitdmem
|
||||
add $0x04,%ebx
|
||||
jmp dmemloop
|
||||
exitdmem:
|
||||
jmp readcommand
|
||||
|
||||
dooutb:
|
||||
// out val,port
|
||||
movl $outb1a, subroutinereg
|
||||
jmp readnibbles
|
||||
outb1a:
|
||||
mov resultreg,%ebx
|
||||
movl $outb1b, subroutinereg
|
||||
jmp readnibbles
|
||||
outb1b:
|
||||
mov resultreg,%edx
|
||||
mov %ebx,%eax
|
||||
out %al,%dx
|
||||
jmp readcommand
|
||||
|
||||
dooutw:
|
||||
// out val,port
|
||||
movl $outw1a, subroutinereg
|
||||
jmp readnibbles
|
||||
outw1a:
|
||||
mov resultreg,%ebx
|
||||
movl $outw1b, subroutinereg
|
||||
jmp readnibbles
|
||||
outw1b:
|
||||
mov resultreg,%edx
|
||||
mov %ebx,%eax
|
||||
out %ax,%dx
|
||||
jmp readcommand
|
||||
|
||||
dooutd:
|
||||
// out val,port
|
||||
movl $outd1a, subroutinereg
|
||||
jmp readnibbles
|
||||
outd1a:
|
||||
mov resultreg,%ebx
|
||||
movl $outd1b, subroutinereg
|
||||
jmp readnibbles
|
||||
outd1b:
|
||||
mov resultreg,%edx
|
||||
mov %ebx,%eax
|
||||
out %eax,%dx
|
||||
jmp readcommand
|
||||
|
||||
wmemb:
|
||||
movl $wmemba, subroutinereg
|
||||
jmp readnibbles
|
||||
wmemba:
|
||||
mov resultreg,%ebx
|
||||
movl $wmembb, subroutinereg
|
||||
jmp readnibbles
|
||||
wmembb:
|
||||
mov resultreg,%eax
|
||||
mov %al,(%ebx)
|
||||
jmp readcommand
|
||||
|
||||
wmemw:
|
||||
movl $wmemwa, subroutinereg
|
||||
jmp readnibbles
|
||||
wmemwa:
|
||||
mov resultreg,%ebx
|
||||
movl $wmemwb, subroutinereg
|
||||
jmp readnibbles
|
||||
wmemwb:
|
||||
mov resultreg,%eax
|
||||
mov %ax,(%ebx)
|
||||
jmp readcommand
|
||||
|
||||
wmeml:
|
||||
movl $wmemla, subroutinereg
|
||||
jmp readnibbles
|
||||
wmemla:
|
||||
mov resultreg,%ebx
|
||||
movl $wmemlb, subroutinereg
|
||||
jmp readnibbles
|
||||
wmemlb:
|
||||
mov resultreg,%eax
|
||||
mov %eax,(%ebx)
|
||||
jmp readcommand
|
||||
|
||||
doinb:
|
||||
// in port
|
||||
movl $inb1a, subroutinereg
|
||||
jmp readnibbles
|
||||
inb1a:
|
||||
mov resultreg,%edx
|
||||
mov $0x0,%eax
|
||||
in %dx,%al
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
doinw:
|
||||
// in port
|
||||
movl $inw1a, subroutinereg
|
||||
jmp readnibbles
|
||||
inw1a:
|
||||
mov resultreg,%edx
|
||||
mov $0x0,%eax
|
||||
in %dx,%ax
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
doind:
|
||||
// in port
|
||||
movl $ind1a, subroutinereg
|
||||
jmp readnibbles
|
||||
ind1a:
|
||||
mov resultreg,%edx
|
||||
in %dx,%eax
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
jmpto:
|
||||
movl $jmp1a, subroutinereg
|
||||
jmp readnibbles
|
||||
jmp1a:
|
||||
mov $readcommand,%eax
|
||||
jmp *resultreg
|
||||
|
||||
callto:
|
||||
movl $call1a, subroutinereg
|
||||
jmp readnibbles
|
||||
call1a:
|
||||
mov $readcommand,%eax
|
||||
call *resultreg
|
||||
jmp readcommand
|
||||
|
||||
dopush:
|
||||
movl $push1a, subroutinereg
|
||||
jmp readnibbles
|
||||
push1a:
|
||||
mov resultreg,%eax
|
||||
push %eax
|
||||
jmp readcommand
|
||||
|
||||
doint:
|
||||
movl $int1a, subroutinereg
|
||||
jmp readnibbles
|
||||
int1a:
|
||||
mov resultreg,%eax
|
||||
// need to lookup int table?
|
||||
// int %eax
|
||||
jmp readcommand
|
||||
|
||||
doenter:
|
||||
//setup stack frame
|
||||
|
||||
|
||||
dopop:
|
||||
movl $readcommand, subroutinereg
|
||||
pop resultreg
|
||||
jmp displayhex
|
||||
|
||||
docli:
|
||||
cli
|
||||
jmp readcommand
|
||||
|
||||
dosti:
|
||||
sti
|
||||
jmp readcommand
|
||||
|
||||
|
||||
displaystring:
|
||||
// resultreg= pointer to string terminated by \0
|
||||
dsloop:
|
||||
movb (resultreg),%ah
|
||||
cmp $0x0, %ah
|
||||
jz displaystringexit
|
||||
mov UART_BASEADDR+5,%dx
|
||||
us_waits:
|
||||
in %dx,%al
|
||||
test $0x20,%al
|
||||
jz us_waits
|
||||
mov UART_BASEADDR,%dx
|
||||
xchg %al,%ah
|
||||
out %al,%dx // output char
|
||||
inc resultreg
|
||||
jmp dsloop
|
||||
displaystringexit:
|
||||
jmp *subroutinereg
|
||||
|
||||
displayhexlinear:
|
||||
mov resultreg,%eax
|
||||
xchg %al,%ah
|
||||
rol $0x10,%eax
|
||||
xchg %al,%ah
|
||||
mov %eax,resultreg
|
||||
displayhex:
|
||||
rol $0x10,%ecx
|
||||
mov $0x8,%cx
|
||||
dhloop:
|
||||
cmp $0xf,%cl
|
||||
je exitdisplayhex
|
||||
rol $0x04,resultreg
|
||||
movl resultreg,%eax
|
||||
and $0xf,%al
|
||||
cmp $0xa,%al
|
||||
jl addnum
|
||||
//addcaps
|
||||
add $0x37,%al
|
||||
jmp outcharhex
|
||||
addnum:
|
||||
add $0x30,%al
|
||||
outcharhex:
|
||||
xchg %al,%ah
|
||||
mov UART_BASEADDR+5,%dx
|
||||
us_waith:
|
||||
in %dx,%al
|
||||
test $0x20,%al
|
||||
jz us_waith
|
||||
mov UART_BASEADDR,%dx
|
||||
xchg %al,%ah
|
||||
out %al,%dx // output char
|
||||
dec %cx
|
||||
cmp $0x0,%cx
|
||||
jne dhloop
|
||||
mov $0x20,%al
|
||||
mov $0x10,%cl
|
||||
jmp outcharhex
|
||||
exitdisplayhex:
|
||||
rol $0x10,%ecx
|
||||
jmp *subroutinereg
|
||||
|
||||
displayasciilinear:
|
||||
mov resultreg,%eax
|
||||
xchg %al,%ah
|
||||
rol $0x10,%eax
|
||||
xchg %al,%ah
|
||||
mov %eax,resultreg
|
||||
displayascii:
|
||||
rol $0x10,%ecx
|
||||
mov $0x4,%cx
|
||||
daloop:
|
||||
rol $0x08,resultreg
|
||||
movl resultreg,%eax
|
||||
cmp $0x7e,%al
|
||||
jg unprintable
|
||||
cmp $0x20,%al
|
||||
jl unprintable
|
||||
jmp outcharascii
|
||||
unprintable:
|
||||
mov $0x2e,%al // dot
|
||||
outcharascii:
|
||||
xchg %al,%ah
|
||||
mov UART_BASEADDR+5,%dx
|
||||
us_waita:
|
||||
in %dx,%al
|
||||
test $0x20,%al
|
||||
jz us_waita
|
||||
mov UART_BASEADDR,%dx
|
||||
xchg %al,%ah
|
||||
out %al,%dx // output char
|
||||
dec %cx
|
||||
cmp $0x0,%cx
|
||||
jne daloop
|
||||
rol $0x10,%ecx
|
||||
jmp *subroutinereg
|
||||
|
||||
rst:
|
||||
cli
|
||||
movb $0x0fe,%al
|
||||
out %al,$0x64
|
||||
hlt
|
||||
|
||||
RST:
|
||||
cli
|
||||
lidt %cs:0x03fff
|
||||
int $0x3
|
||||
hlt
|
||||
|
||||
|
||||
beep:
|
||||
mov timertime,%eax
|
||||
rol $0x10,%eax
|
||||
mov $0xb6,%al
|
||||
out %al,$0x43
|
||||
mov freqtime,%ax
|
||||
out %al,$0x42
|
||||
xchg %al,%ah
|
||||
out %al,$0x42
|
||||
|
||||
in $0x61,%al
|
||||
or $0x03,%al
|
||||
out %al,$0x61
|
||||
|
||||
//timer here
|
||||
timer:
|
||||
in $0x42,%al
|
||||
// xchg %al,%ah
|
||||
in $0x42,%al
|
||||
// xchg %al,%ah
|
||||
cmp $0x0,%al
|
||||
jnz timer
|
||||
rol $0x10,%eax
|
||||
dec %ax
|
||||
cmp $0x0,%ax;
|
||||
rol $0x10,%eax
|
||||
jnz timer
|
||||
// timer
|
||||
|
||||
in $0x61,%al
|
||||
and $0xfc,%al
|
||||
out %al,$0x61
|
||||
jmp *subroutinereg
|
||||
|
||||
dohelp:
|
||||
mov $cmds,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
memt:
|
||||
movl $memt1, subroutinereg
|
||||
jmp readnibbles
|
||||
memt1:
|
||||
mov resultreg,%ecx
|
||||
movl $memt2, subroutinereg
|
||||
jmp readnibbles
|
||||
memt2:
|
||||
mov resultreg,%ebx
|
||||
xchg %ecx,%eax
|
||||
mov $readcommand,%esp // internal to linux bios
|
||||
jmp ramtest
|
||||
|
||||
pcirb:
|
||||
movl $pcirb1, subroutinereg
|
||||
jmp readnibbles
|
||||
pcirb1:
|
||||
mov resultreg,%eax
|
||||
PCI_READ_CONFIG_BYTE
|
||||
and $0xff,%eax
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
pcirw:
|
||||
movl $pcirw1, subroutinereg
|
||||
jmp readnibbles
|
||||
pcirw1:
|
||||
mov resultreg,%eax
|
||||
PCI_READ_CONFIG_WORD
|
||||
and $0xffff,%eax
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
pcirl:
|
||||
movl $pcirl1, subroutinereg
|
||||
jmp readnibbles
|
||||
pcirl1:
|
||||
mov resultreg,%eax
|
||||
PCI_READ_CONFIG_DWORD
|
||||
mov %eax,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displayhex
|
||||
|
||||
|
||||
|
||||
|
||||
pciwb:
|
||||
movl $pciwb1, subroutinereg
|
||||
jmp readnibbles
|
||||
pciwb1:
|
||||
mov resultreg,%ebx
|
||||
movl $pciwb2, subroutinereg
|
||||
jmp readnibbles
|
||||
pciwb2:
|
||||
mov resultreg,%edx
|
||||
mov %ebx,%eax
|
||||
PCI_WRITE_CONFIG_BYTE
|
||||
jmp readcommand
|
||||
|
||||
pciww:
|
||||
movl $pciww1, subroutinereg
|
||||
jmp readnibbles
|
||||
pciww1:
|
||||
mov resultreg,%ebx
|
||||
movl $pciww2, subroutinereg
|
||||
jmp readnibbles
|
||||
pciww2:
|
||||
mov resultreg,%ecx
|
||||
mov %ebx,%eax
|
||||
PCI_WRITE_CONFIG_WORD
|
||||
jmp readcommand
|
||||
|
||||
pciwl:
|
||||
movl $pciwl1, subroutinereg
|
||||
jmp readnibbles
|
||||
pciwl1:
|
||||
mov resultreg,%ebx
|
||||
movl $pciwl2, subroutinereg
|
||||
jmp readnibbles
|
||||
pciwl2:
|
||||
mov resultreg,%ecx
|
||||
mov %ebx,%eax
|
||||
PCI_WRITE_CONFIG_DWORD
|
||||
jmp readcommand
|
||||
|
||||
cram:
|
||||
//likely not working. Just testing for now
|
||||
movl $cram1, subroutinereg
|
||||
jmp readnibbles
|
||||
cram1:
|
||||
mov resultreg,%ebx
|
||||
movl $cram1, subroutinereg
|
||||
jmp readnibbles
|
||||
cram2:
|
||||
mov resultreg,%ecx
|
||||
// enable it
|
||||
mov %cr0,%eax
|
||||
and $0x9fffffff,%eax // also try 0x0fff, 0x2ff(write back)...
|
||||
mov %eax,%cr0
|
||||
//wbinvd ??
|
||||
cacheloop:
|
||||
mov (%ebx),%eax
|
||||
inc %ebx
|
||||
loop cacheloop
|
||||
// disable it
|
||||
mov %cr0,%eax
|
||||
or $0x60000000,%eax
|
||||
mov %eax,%cr0
|
||||
//wbinvd ??
|
||||
|
||||
dodl:
|
||||
movl $dl1, subroutinereg
|
||||
jmp readnibbles
|
||||
dl1:
|
||||
mov resultreg,%ebx
|
||||
movl $dl2, subroutinereg
|
||||
jmp readnibbles
|
||||
dl2:
|
||||
mov resultreg,%ecx
|
||||
mov resultreg,subroutinereg
|
||||
mov %ebx,resultreg
|
||||
dlloop:
|
||||
mov UART_BASEADDR+5,%dx
|
||||
in %dx, %al
|
||||
and $0x9f,%al
|
||||
test $0x01,%al
|
||||
jz dlloop
|
||||
mov UART_BASEADDR,%dx
|
||||
in %dx,%al
|
||||
mov %al,(%ebx)
|
||||
inc %ebx
|
||||
loop dlloop
|
||||
csum:
|
||||
mov subroutinereg,%ecx
|
||||
shr $0x02,%ecx
|
||||
mov resultreg,%ebx
|
||||
mov $0x0,%eax
|
||||
csumloop:
|
||||
rol $0x03,%eax
|
||||
mov (%ebx),%dl
|
||||
xor %dl,%al
|
||||
inc %ebx
|
||||
loop csumloop
|
||||
mov $readcommand,subroutinereg
|
||||
mov %eax,resultreg
|
||||
jmp displayhex
|
||||
|
||||
baud:
|
||||
mov $sorry,resultreg
|
||||
mov $readcommand,subroutinereg
|
||||
jmp displaystring
|
||||
|
||||
mcp:
|
||||
movl $mcp1, subroutinereg
|
||||
jmp readnibbles
|
||||
mcp1:
|
||||
mov resultreg,%ebx
|
||||
movl $mcp2, subroutinereg
|
||||
jmp readnibbles
|
||||
mcp2:
|
||||
mov resultreg,%ecx
|
||||
movl $mcp3, subroutinereg
|
||||
jmp readnibbles
|
||||
mcp3:
|
||||
mov resultreg,%eax
|
||||
xchg %ecx,%eax
|
||||
mcploop:
|
||||
mov (%ebx),%dl
|
||||
mov %dl,(%eax)
|
||||
inc %ebx
|
||||
inc %eax
|
||||
loop mcploop
|
||||
jmp readcommand
|
||||
|
||||
dopattern:
|
||||
movl $pat1, subroutinereg
|
||||
jmp readnibbles
|
||||
pat1:
|
||||
mov resultreg,%ebx
|
||||
movl $pat2, subroutinereg
|
||||
jmp readnibbles
|
||||
pat2:
|
||||
mov resultreg,%ecx
|
||||
movl $pat3, subroutinereg
|
||||
jmp readnibbles
|
||||
pat3:
|
||||
mov resultreg,%eax
|
||||
xchg %ecx,%eax
|
||||
patloop:
|
||||
rol $0x08,%ebx
|
||||
mov %bl,(%eax)
|
||||
inc %eax
|
||||
loop patloop
|
||||
jmp readcommand
|
||||
|
||||
|
||||
doexit:
|
||||
// LB specific:
|
||||
RETSP // if there's no stack yet, caller must set %esp manually
|
||||
// RET_LABEL(low_level_shell)
|
||||
|
||||
|
||||
//Linux OS Specific
|
||||
ioperms:
|
||||
movl $sys_IOPL, %eax # system-call ID-number
|
||||
movl $3, %ebx # new value for IO0PL
|
||||
int $0x80 # enter the kernel
|
||||
ret
|
||||
|
||||
llshell_out:
|
||||
25
src/arch/i386/llshell/readme.linuxbios
Normal file
25
src/arch/i386/llshell/readme.linuxbios
Normal file
@@ -0,0 +1,25 @@
|
||||
|
||||
1) Include llshell.inc in your northbridge Config file
|
||||
2) In raminit.inc (or whatever), make a jmp out to low_level_shell, setting
|
||||
a return label in %esp.
|
||||
For example:
|
||||
ram_set_registers:
|
||||
|
||||
mov $llshell_ret1,%esp
|
||||
jmp low_level_shell
|
||||
llshell_ret1:
|
||||
|
||||
/* Disable and invalidate the cache */
|
||||
invd
|
||||
mov %cr0, %eax
|
||||
....
|
||||
3) Optionally, comment out two lines in ramtest.inc:
|
||||
5:
|
||||
CONSOLE_INFO_TX_STRING($rt_toomany)
|
||||
// intel_chip_post_macro(0xf1)
|
||||
// jmp .Lhlt
|
||||
otherwise, a ramtest failure will hang
|
||||
|
||||
4) build and flash as normal
|
||||
If it worked, the speaker will beep, and you'll get a shell.
|
||||
Type help or ? at the prompt for a list of commands.
|
||||
@@ -26,7 +26,7 @@ OUTPUT_FORMAT("elf32-powerpc")
|
||||
ENTRY(_start)
|
||||
|
||||
TARGET(binary)
|
||||
INPUT(linuxbios_payload)
|
||||
INPUT(linuxbios_ram.rom)
|
||||
SECTIONS
|
||||
{
|
||||
/*
|
||||
@@ -63,7 +63,7 @@ SECTIONS
|
||||
*(.text);
|
||||
*(.rom.data);
|
||||
*(.rodata);
|
||||
*(EXCLUDE_FILE(linuxbios_payload) .data);
|
||||
*(EXCLUDE_FILE(linuxbios_ram.rom) .data);
|
||||
. = ALIGN(16);
|
||||
_erom = .;
|
||||
}
|
||||
@@ -71,21 +71,21 @@ SECTIONS
|
||||
_elrom = LOADADDR(.rom) + SIZEOF(.rom);
|
||||
|
||||
/*
|
||||
* Payload is LinuxBIOS proper.
|
||||
* Ram is the LinuxBIOS code that runs from RAM.
|
||||
*/
|
||||
.payload . : {
|
||||
_payload = . ;
|
||||
linuxbios_payload(*)
|
||||
_epayload = . ;
|
||||
.ram . : {
|
||||
_ram = . ;
|
||||
linuxbios_ram.rom(*)
|
||||
_eram = . ;
|
||||
}
|
||||
|
||||
/*
|
||||
* Absolute location of where payload will be relocated in RAM.
|
||||
* Absolute location of where LinuxBIOS will be relocated in RAM.
|
||||
*/
|
||||
_iseg = _RAMBASE;
|
||||
_eiseg = _iseg + SIZEOF(.payload);
|
||||
_liseg = _payload;
|
||||
_eliseg = _epayload;
|
||||
_eiseg = _iseg + SIZEOF(.ram);
|
||||
_liseg = _ram;
|
||||
_eliseg = _eram;
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.comment)
|
||||
|
||||
Reference in New Issue
Block a user