diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/cannonlake/Makefile.inc | 3 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/bootblock/pch.c | 2 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/bootblock.h | 2 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/memmap.c | 79 |
4 files changed, 85 insertions, 1 deletions
diff --git a/src/soc/intel/cannonlake/Makefile.inc b/src/soc/intel/cannonlake/Makefile.inc index 480e0477ad..537a973a61 100644 --- a/src/soc/intel/cannonlake/Makefile.inc +++ b/src/soc/intel/cannonlake/Makefile.inc @@ -11,8 +11,9 @@ bootblock-y += bootblock/cpu.c bootblock-y += bootblock/pch.c bootblock-y += bootblock/report_platform.c bootblock-y += gpio.c +bootblock-y += memmap.c -romstage-y += cbmem.c +romstage-y += memmap.c romstage-y += reset.c romstage-$(CONFIG_DRIVERS_UART_8250MEM) += uart.c diff --git a/src/soc/intel/cannonlake/bootblock/pch.c b/src/soc/intel/cannonlake/bootblock/pch.c index d294cea46b..21a06e4ff5 100644 --- a/src/soc/intel/cannonlake/bootblock/pch.c +++ b/src/soc/intel/cannonlake/bootblock/pch.c @@ -196,4 +196,6 @@ void pch_early_init(void) enable_rtc_upper_bank(); heci_init(HECI1_BASE_ADDRESS); + + clear_cbmem_top(); } diff --git a/src/soc/intel/cannonlake/include/soc/bootblock.h b/src/soc/intel/cannonlake/include/soc/bootblock.h index 2a6ca1fb15..fcef4ef358 100644 --- a/src/soc/intel/cannonlake/include/soc/bootblock.h +++ b/src/soc/intel/cannonlake/include/soc/bootblock.h @@ -27,4 +27,6 @@ void pch_early_init(void); void pch_early_iorange_init(void); void report_platform_info(void); +void clear_cbmem_top(void); + #endif diff --git a/src/soc/intel/cannonlake/memmap.c b/src/soc/intel/cannonlake/memmap.c new file mode 100644 index 0000000000..8b487f6b83 --- /dev/null +++ b/src/soc/intel/cannonlake/memmap.c @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * Copyright (C) 2015-2017 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/io.h> +#include <cbmem.h> +#include <console/console.h> +#include <fsp/util.h> +#include <soc/bootblock.h> +#include <soc/systemagent.h> + +static void *top_of_ram_register(void) +{ + int num; + int offset; + num = (read32((uintptr_t *)HPET_BASE_ADDRESS) >> 8) & 0x1f; + offset = 0x100 + (0x20 * num) + 0x08; + return (void *)(uintptr_t)(HPET_BASE_ADDRESS + offset); +} + +void clear_cbmem_top(void) +{ + write32(top_of_ram_register(), 0); +} + +void cbmem_top_init(void) +{ + struct range_entry fsp_mem; + uintptr_t top; + + if (fsp_find_reserved_memory(&fsp_mem)) + die("Can't file top of ram.\n"); + + top = ALIGN_UP(range_entry_base(&fsp_mem), 16 * MiB); + write32(top_of_ram_register(), top); +} + +void *cbmem_top(void) +{ + /* + * +-------------------------+ Top of RAM (aligned) + * | System Management Mode | + * | code and data | Length: CONFIG_TSEG_SIZE + * | (TSEG) | + * +-------------------------+ SMM base (aligned) + * | | + * | Chipset Reserved Memory | + * | | + * +-------------------------+ top_of_ram (aligned) + * | | + * | CBMEM Root | + * | | + * +-------------------------+ + * | | + * | FSP Reserved Memory | + * | | + * +-------------------------+ + * | | + * | Various CBMEM Entries | + * | | + * +-------------------------+ top_of_stack (8 byte aligned) + * | | + * | stack (CBMEM Entry) | + * | | + * +-------------------------+ + */ + return (void *)(uintptr_t)read32(top_of_ram_register()); +} |