diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/baytrail/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/efi_wrapper.h | 50 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/ramstage.h | 5 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/ramstage.c | 3 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/refcode.c | 60 |
5 files changed, 119 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc index 1969a3526c..11ef5a39f2 100644 --- a/src/soc/intel/baytrail/Makefile.inc +++ b/src/soc/intel/baytrail/Makefile.inc @@ -31,6 +31,7 @@ smm-y += pmutil.c smm-y += smihandler.c ramstage-y += smm.c ramstage-y += southcluster.c +ramstage-$(CONFIG_HAVE_REFCODE_BLOB) += refcode.c # Remove as ramstage gets fleshed out ramstage-y += placeholders.c diff --git a/src/soc/intel/baytrail/baytrail/efi_wrapper.h b/src/soc/intel/baytrail/baytrail/efi_wrapper.h new file mode 100644 index 0000000000..6682f95cfc --- /dev/null +++ b/src/soc/intel/baytrail/baytrail/efi_wrapper.h @@ -0,0 +1,50 @@ +/* + * PEI EFI entry point + * + * Copyright 2013 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of Google Inc. nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 GOOGLE INC 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. + */ + +#ifndef __EFI_WRAPPER_H__ +#define __EFI_WRAPPER_H__ + +#define EFI_WRAPPER_VER 1 + +/* Provide generic x86 calling conventions. */ +#define ABI_X86 __attribute((regparm(0))) + +/* Errors returned by the EFI wrapper. */ +enum efi_wrapper_error { + INVALID_VER = -1, +}; + +struct efi_wrapper_params { + /* Mainboard Inputs */ + int version; + + void ABI_X86 (*console_out)(unsigned char byte); +} __attribute__((packed)); + +typedef int ABI_X86 (*efi_wrapper_entry_t)(struct efi_wrapper_params *); +#endif diff --git a/src/soc/intel/baytrail/baytrail/ramstage.h b/src/soc/intel/baytrail/baytrail/ramstage.h index 790b8c6a99..eaa8f6beae 100644 --- a/src/soc/intel/baytrail/baytrail/ramstage.h +++ b/src/soc/intel/baytrail/baytrail/ramstage.h @@ -27,6 +27,11 @@ void baytrail_init_pre_device(void); void baytrail_init_cpus(device_t dev); void set_max_freq(void); +#if CONFIG_HAVE_REFCODE_BLOB +void baytrail_run_reference_code(void); +#else +static inline void baytrail_run_reference_code(void) {} +#endif extern struct pci_operations soc_pci_ops; diff --git a/src/soc/intel/baytrail/ramstage.c b/src/soc/intel/baytrail/ramstage.c index 229e3679df..896ecfe8d5 100644 --- a/src/soc/intel/baytrail/ramstage.c +++ b/src/soc/intel/baytrail/ramstage.c @@ -113,6 +113,9 @@ void baytrail_init_pre_device(void) /* Allow for SSE instructions to be executed. */ write_cr4(read_cr4() | CR4_OSFXSR | CR4_OSXMMEXCPT); + /* Run reference code. */ + baytrail_run_reference_code(); + /* Get GPIO initial states from mainboard */ config = mainboard_get_gpios(); setup_soc_gpios(config); diff --git a/src/soc/intel/baytrail/refcode.c b/src/soc/intel/baytrail/refcode.c new file mode 100644 index 0000000000..1d88ef7eb9 --- /dev/null +++ b/src/soc/intel/baytrail/refcode.c @@ -0,0 +1,60 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <cbmem.h> +#include <console/console.h> +#include <rmodule.h> + +#include <baytrail/ramstage.h> +#include <baytrail/efi_wrapper.h> + +static void ABI_X86 send_to_console(unsigned char b) +{ + console_tx_byte(b); +} + +void baytrail_run_reference_code(void) +{ + int ret; + efi_wrapper_entry_t entry; + struct efi_wrapper_params wrp = { + .version = EFI_WRAPPER_VER, + .console_out = send_to_console, + }; + struct rmod_stage_load refcode = { + .cbmem_id = CBMEM_ID_REFCODE, + .name = CONFIG_CBFS_PREFIX "/refcode", + }; + + if (rmodule_stage_load_from_cbfs(&refcode) || refcode.entry == NULL) { + printk(BIOS_DEBUG, "Error loading reference code.\n"); + return; + } + + entry = refcode.entry; + + /* Call into reference code. */ + ret = entry(&wrp); + + if (ret != 0) { + printk(BIOS_DEBUG, "Reference code returned %d\n", ret); + return; + } +} + |