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libpayload: The initial chunk of code writen by AMD

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This is the initial chunk of code written by me and copyrighted
by AMD.  Includes everything but a few files that we pulled from
outside sources.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3170 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Jordan Crouse
2008-03-19 23:56:58 +00:00
parent c221349746
commit f6145c3c15
33 changed files with 3677 additions and 0 deletions
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31
payloads/libpayload/i386/Makefile.inc Normal file
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#
# This file is part of the libpayload project.
#
# Copyright (C) 2008 Advanced Micro Devices, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
TARGETS-y += i386/head.o i386/main.o i386/sysinfo.o
TARGETS-y += i386/timer.o i386/coreboot.o i386/util.o

147
payloads/libpayload/i386/coreboot.c Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload.h>
#include <sysinfo.h>
#include <ipchecksum.h>
#include <coreboot_tables.h>
/* Some of this is x86 specific, and the rest of it
is generic. Right now, since we only support x86,
we'll avoid trying to make lots of infrastructure
we don't need. If in the future, we want to use
coreboot on some other architecture, then take out
the generic parsing code and move it elsewhere
*/
/* === Parsing code === */
/* This is the generic parsing code */
static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info)
{
struct cb_memory *mem = (struct cb_memory *) ptr;
int count = MEM_RANGE_COUNT(mem);
int i;
if (count > SYSINFO_MAX_MEM_RANGES)
count = SYSINFO_MAX_MEM_RANGES;
info->n_memranges = 0;
for(i = 0; i < count; i++) {
struct cb_memory_range *range =
(struct cb_memory_range *) MEM_RANGE_PTR(mem, i);
if (range->type != CB_MEM_RAM)
continue;
info->memrange[info->n_memranges].base =
UNPACK_CB64(range->start);
info->memrange[info->n_memranges].size =
UNPACK_CB64(range->size);
info->n_memranges++;
}
}
static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info)
{
struct cb_serial *ser = (struct cb_serial *) ptr;
info->ser_ioport = ser->ioport;
}
static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
{
struct cb_header *header;
unsigned char *ptr = (unsigned char *) addr;
int i;
for (i = 0; i < len; i += 16, ptr += 16) {
header = (struct cb_header *) ptr;
if (!strncmp(header->signature, "LBIO", 4))
break;
}
/* We walked the entire space and didn't find anything */
if (i >= len)
return -1;
if (!header->table_bytes)
return 0;
/* Make sure the checksums match */
if (ipchksum((uint16_t *) header, sizeof(*header)) != 0)
return -1;
if (ipchksum((uint16_t *) (ptr + sizeof(*header)),
header->table_bytes) != header->table_checksum)
return -1;
/* Now, walk the tables */
ptr += header->header_bytes;
for(i = 0; i < header->table_entries; i++) {
struct cb_record *rec = (struct cb_record *) ptr;
/* We only care about a few tags here - maybe
more will be interesting later
*/
switch(rec->tag) {
case CB_TAG_MEMORY:
cb_parse_memory(ptr, info);
break;
case CB_TAG_SERIAL:
cb_parse_serial(ptr, info);
break;
}
ptr += rec->size;
}
return 1;
}
/* == Architecture specific ==*/
/* This is the x86 specific stuff */
int get_coreboot_info(struct sysinfo_t *info)
{
int ret = cb_parse_header((void *) 0x0, 0x1000, info);
if (ret != 1)
ret = cb_parse_header((void *) 0xf0000, 0x1000, info);
return (ret == 1) ? 0 : -1;
}

85
payloads/libpayload/i386/head.S Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
.global _entry, _leave
.text
.align 4
/* Our entry point - assume that the CPU is in
* 32 bit protected mode and all segments are in a
* flat model. Thats our operating mode, so we won't
* change anything
*/
_entry:
call _init
/* We're back - go back to the bootloader */
ret
/* This function saves off the previous stack and
switches us to our own execution enviornment
*/
_init:
/* No interrupts, please */
cli
/* Get the current stack pointer */
movl %esp, %esi
movl _istack, %ebx
/* lret needs %cs in the stack, so copy it over */
movw %cs, 4(%ebx)
/* Exchange the current stack pointer for the one in
the initial stack (which happens to be the new
stack pointer) */
xchgl %esi, 16(%ebx)
/* Set the new stack pointer */
movl %esi, %esp
/* Return into the main entry function
and go
*/
lret
_leave:
movl _istack, %ebx
/* Restore the stack pointer from the storage area */
movl 16(%ebx), %esp
/* Return to the original context */
lret

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payloads/libpayload/i386/main.c Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <arch/types.h>
/* This structure seeds the stack. We provide
the return address of our main function, and
further down, the address of the function
that we call when we leave and try to restore
the original stack. At the very bottom of the
stack we store the orignal stack pointer
from the calling application
*/
static void start_main(void);
extern void _leave(void);
static struct {
uint32_t eip[2];
uint32_t raddr[2];
uint32_t esp;
} initial_stack __attribute__((section (".istack"))) = {
{ (uint32_t) start_main, 0 },
{ (uint32_t) _leave, 0 },
(uint32_t) &initial_stack,
};
void * _istack = &initial_stack;
/* This is our C entry function - set up the system
and jump into the payload entry point */
static void start_main(void)
{
extern int main(void);
/* Set up the consoles */
console_init();
/* Gather system information */
lib_get_sysinfo();
/* Any other system init that has to happen before the
user gets control goes here. */
/* Go to the entry point */
/* in the future we may care about the return value */
(void) main();
/* Returning here will go to the _leave function to return
us to the original context */
}

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payloads/libpayload/i386/sysinfo.c Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload.h>
#include <sysinfo.h>
/* This is a global structure that is used through the
library - we set it up initially with some dummy
values - hopefully they will be overridden
*/
struct sysinfo_t lib_sysinfo = {
. cpu_khz = 200,
. ser_ioport = CONFIG_SERIAL_IOBASE,
};
void lib_get_sysinfo(void)
{
/* Get the CPU speed (for delays) */
lib_sysinfo.cpu_khz = get_cpu_speed();
/* Get the memory information */
get_coreboot_info(&lib_sysinfo);
if (!lib_sysinfo.n_memranges) {
/* If we couldn't get a good memory range,
then use a hard coded default */
lib_sysinfo.n_memranges = 2;
lib_sysinfo.memrange[0].base = 0;
lib_sysinfo.memrange[0].size = 640 * 1024;
lib_sysinfo.memrange[1].base = 1024 * 1024;
lib_sysinfo.memrange[1].size = 31 * 1024 * 1024;
}
}

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payloads/libpayload/i386/timer.c Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libpayload.h>
#include <arch/rdtsc.h>
static unsigned int cpu_khz;
/* Calculate the speed of the processor for use in delays */
void get_cpu_speed(void)
{
unsigned long long start, end;
/* Set up the PPC port - disable the speaker,
* enable the T2 gate */
outb((inb(0x61) & ~0x02) | 0x01, 0x61);
/* Set the PIT to Mode 0, counter 2, word access */
outb(0xB0, 0x43);
/* Load the counter with 0xFFFF */
outb(0xFF, 0x42);
outb(0xFF, 0x42);
/* Read the number of ticks during the period */
start = rdtsc();
while(!(inb(0x61) & 0x20));
end = rdtsc();
/* The clock rate is 1193180 Hz
* the number of miliseconds for a period
* of 0xFFFF is 1193180 / (0xFFFF * 1000)
* or .0182. Multiply that by the number of
* measured clocks to get the khz value
*/
cpu_khz =
(unsigned int ) ((end - start) * 1193180U / (1000 * 0xFFFF));
}
/* Global delay functions */
static inline void _delay(unsigned int delta)
{
unsigned long long timeout = rdtsc() + delta;
while (rdtsc() < timeout);
}
void ndelay(unsigned int n)
{
_delay(n * cpu_khz / 1000000);
}
void mdelay(unsigned int m)
{
_delay(m * cpu_khz);
}
void delay(unsigned int s)
{
_delay(s * cpu_khz * 1000);
}

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payloads/libpayload/i386/util.S Normal file
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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
.global halt
.text
.align 4
/* This function puts the system into a halt. */
halt:
cli
hlt
jmp halt