diff options
Diffstat (limited to 'payloads/libpayload/i386')
| -rw-r--r-- | payloads/libpayload/i386/Makefile.inc | 31 | ||||
| -rw-r--r-- | payloads/libpayload/i386/coreboot.c | 147 | ||||
| -rw-r--r-- | payloads/libpayload/i386/head.S | 85 | ||||
| -rw-r--r-- | payloads/libpayload/i386/main.c | 79 | ||||
| -rw-r--r-- | payloads/libpayload/i386/sysinfo.c | 70 | ||||
| -rw-r--r-- | payloads/libpayload/i386/timer.c | 92 | ||||
| -rw-r--r-- | payloads/libpayload/i386/util.S | 38 |
7 files changed, 542 insertions, 0 deletions
diff --git a/payloads/libpayload/i386/Makefile.inc b/payloads/libpayload/i386/Makefile.inc new file mode 100644 index 0000000000..75b0749973 --- /dev/null +++ b/payloads/libpayload/i386/Makefile.inc @@ -0,0 +1,31 @@ +# +# 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 diff --git a/payloads/libpayload/i386/coreboot.c b/payloads/libpayload/i386/coreboot.c new file mode 100644 index 0000000000..6d310d0325 --- /dev/null +++ b/payloads/libpayload/i386/coreboot.c @@ -0,0 +1,147 @@ +/* + * 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; +} diff --git a/payloads/libpayload/i386/head.S b/payloads/libpayload/i386/head.S new file mode 100644 index 0000000000..1278bdf4ed --- /dev/null +++ b/payloads/libpayload/i386/head.S @@ -0,0 +1,85 @@ +/* + * 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 + diff --git a/payloads/libpayload/i386/main.c b/payloads/libpayload/i386/main.c new file mode 100644 index 0000000000..846d46a426 --- /dev/null +++ b/payloads/libpayload/i386/main.c @@ -0,0 +1,79 @@ +/* + * 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 */ +} diff --git a/payloads/libpayload/i386/sysinfo.c b/payloads/libpayload/i386/sysinfo.c new file mode 100644 index 0000000000..1fdf3fc419 --- /dev/null +++ b/payloads/libpayload/i386/sysinfo.c @@ -0,0 +1,70 @@ +/* + * 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; + } +} + + + + + + diff --git a/payloads/libpayload/i386/timer.c b/payloads/libpayload/i386/timer.c new file mode 100644 index 0000000000..72a3ee8f48 --- /dev/null +++ b/payloads/libpayload/i386/timer.c @@ -0,0 +1,92 @@ +/* + * 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); +} diff --git a/payloads/libpayload/i386/util.S b/payloads/libpayload/i386/util.S new file mode 100644 index 0000000000..a0b1b0980d --- /dev/null +++ b/payloads/libpayload/i386/util.S @@ -0,0 +1,38 @@ +/* + * 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 |