diff options
| -rw-r--r-- | src/soc/intel/common/block/ebda/Kconfig | 5 | ||||
| -rw-r--r-- | src/soc/intel/common/block/ebda/Makefile.inc | 3 | ||||
| -rw-r--r-- | src/soc/intel/common/block/ebda/ebda.c | 49 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/ebda.h | 63 |
4 files changed, 120 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/ebda/Kconfig b/src/soc/intel/common/block/ebda/Kconfig new file mode 100644 index 0000000000..67c7b48033 --- /dev/null +++ b/src/soc/intel/common/block/ebda/Kconfig @@ -0,0 +1,5 @@ +config SOC_INTEL_COMMON_BLOCK_EBDA + bool + select EARLY_EBDA_INIT + help + Intel Processor common EBDA library support diff --git a/src/soc/intel/common/block/ebda/Makefile.inc b/src/soc/intel/common/block/ebda/Makefile.inc new file mode 100644 index 0000000000..beeba5176a --- /dev/null +++ b/src/soc/intel/common/block/ebda/Makefile.inc @@ -0,0 +1,3 @@ +romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_EBDA) += ebda.c +ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_EBDA) += ebda.c +postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_EBDA) += ebda.c diff --git a/src/soc/intel/common/block/ebda/ebda.c b/src/soc/intel/common/block/ebda/ebda.c new file mode 100644 index 0000000000..87c18d9bc5 --- /dev/null +++ b/src/soc/intel/common/block/ebda/ebda.c @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * 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. + */ + +#include <arch/ebda.h> +#include <intelblocks/ebda.h> + +/* + * Mainboard Override function + * + * Mainboard directory may implement below functionality for romstage. + */ + +/* Fill up EBDA structure inside Mainboard directory */ +__attribute__((weak)) void create_mainboard_ebda(struct ebda_config *cfg) +{ + /* no-op */ +} + +static void create_soc_ebda(struct ebda_config *cfg) +{ + /* Create EBDA header */ + cfg->signature = EBDA_SIGNATURE; + /* Fill up memory layout information */ + fill_soc_memmap_ebda(cfg); +} + +void fill_ebda_area(void) +{ + struct ebda_config ebda_cfg; + struct ebda_config *cfg = &ebda_cfg; + + /* Initialize EBDA area early during romstage. */ + setup_default_ebda(); + create_soc_ebda(cfg); + create_mainboard_ebda(cfg); + write_ebda_data(cfg, sizeof(*cfg)); +} diff --git a/src/soc/intel/common/block/include/intelblocks/ebda.h b/src/soc/intel/common/block/include/intelblocks/ebda.h new file mode 100644 index 0000000000..031cf1973d --- /dev/null +++ b/src/soc/intel/common/block/include/intelblocks/ebda.h @@ -0,0 +1,63 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * 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. + */ + +#ifndef SOC_INTEL_COMMON_BLOCK_EBDA_H +#define SOC_INTEL_COMMON_BLOCK_EBDA_H + +#include <soc/ebda.h> + +#define EBDA_SIGNATURE 0xebda + +/* + * Mainboard Override function + * + * Mainboard directory may implement below functionality for romstage. + */ + +/* Fill up EBDA structure inside Mainboard directory */ +void create_mainboard_ebda(struct ebda_config *cfg); + +/* + * SoC overrides + * + * All new SoC must implement below functionality for romstage. + */ +void fill_soc_memmap_ebda(struct ebda_config *cfg); + +/* + * API to perform below operation + * 1. Initialize EBDA area + * 2. Fill up EBDA structure inside SOC directory + * 3. Fill up EBDA structure inside Mainboard directory + * 4. Store EBDA structure into EBDA area + */ +void fill_ebda_area(void); + +/* + * EBDA structure + * + * SOC should implement EBDA structure as per need + * as below. + * + * Note: First 4 bytes should be reserved for signature as + * 0xEBDA + * + * struct ebda_config { + * uint32_t signature; + * <Required variables..> + * }; + */ + +#endif |