diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/common/basecode/include/intelbasecode/ramtop.h | 14 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/include/intelbasecode/tom.h | 14 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/ramtop/Kconfig (renamed from src/soc/intel/common/basecode/tom/Kconfig) | 8 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/ramtop/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/ramtop/ramtop.c | 127 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/tom/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/intel/common/basecode/tom/tom.c | 127 | ||||
| -rw-r--r-- | src/soc/intel/common/block/systemagent/memmap.c | 8 | ||||
| -rw-r--r-- | src/soc/intel/meteorlake/Kconfig | 2 |
9 files changed, 152 insertions, 152 deletions
diff --git a/src/soc/intel/common/basecode/include/intelbasecode/ramtop.h b/src/soc/intel/common/basecode/include/intelbasecode/ramtop.h new file mode 100644 index 0000000000..067dd6b270 --- /dev/null +++ b/src/soc/intel/common/basecode/include/intelbasecode/ramtop.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_INTEL_COMMON_BASECODE_RAMTOP_H +#define SOC_INTEL_COMMON_BASECODE_RAMTOP_H + +#include <types.h> + +/* Early caching of top_of_ram region */ +void early_ramtop_enable_cache_range(void); + +/* Update the RAMTOP if required based on the input top_of_ram address */ +void update_ramtop(uint32_t addr); + +#endif diff --git a/src/soc/intel/common/basecode/include/intelbasecode/tom.h b/src/soc/intel/common/basecode/include/intelbasecode/tom.h deleted file mode 100644 index d78ecd1a60..0000000000 --- a/src/soc/intel/common/basecode/include/intelbasecode/tom.h +++ /dev/null @@ -1,14 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#ifndef SOC_INTEL_COMMON_BASECODE_TOM_H -#define SOC_INTEL_COMMON_BASECODE_TOM_H - -#include <types.h> - -/* Early caching of TOM region */ -void early_tom_enable_cache_range(void); - -/* Update the TOM if required based on the input TOM address */ -void update_tom(uint32_t addr); - -#endif diff --git a/src/soc/intel/common/basecode/tom/Kconfig b/src/soc/intel/common/basecode/ramtop/Kconfig index ff91725a52..2b600e7464 100644 --- a/src/soc/intel/common/basecode/tom/Kconfig +++ b/src/soc/intel/common/basecode/ramtop/Kconfig @@ -1,15 +1,15 @@ -config SOC_INTEL_COMMON_BASECODE_TOM +config SOC_INTEL_COMMON_BASECODE_RAMTOP bool default n help - Driver code to store the top_of_ram (TOM) address into + Driver code to store the top_of_ram (RAMTOP) address into non-volatile space (CMOS) during the first boot and use it across all consecutive boot. - Purpose of this driver code is to cache the TOM (with a + Purpose of this driver code is to cache the RAMTOP (with a fixed size) for all consecutive boots even before calling into the FSP. Otherwise, this range remains un-cached until postcar boot stage updates the MTRR programming. FSP-M and late romstage - uses this uncached TOM range for various purposes and having the + uses this uncached RAMTOP range for various purposes and having the ability to cache this range beforehand would help to optimize the boot time (more than 50ms). diff --git a/src/soc/intel/common/basecode/ramtop/Makefile.inc b/src/soc/intel/common/basecode/ramtop/Makefile.inc new file mode 100644 index 0000000000..4585173b91 --- /dev/null +++ b/src/soc/intel/common/basecode/ramtop/Makefile.inc @@ -0,0 +1,2 @@ +## SPDX-License-Identifier: GPL-2.0-only +romstage-$(CONFIG_SOC_INTEL_COMMON_BASECODE_RAMTOP) += ramtop.c diff --git a/src/soc/intel/common/basecode/ramtop/ramtop.c b/src/soc/intel/common/basecode/ramtop/ramtop.c new file mode 100644 index 0000000000..89e84d9891 --- /dev/null +++ b/src/soc/intel/common/basecode/ramtop/ramtop.c @@ -0,0 +1,127 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <console/console.h> +#include <cpu/x86/mtrr.h> +#include <ip_checksum.h> +#include <intelbasecode/ramtop.h> +#include <pc80/mc146818rtc.h> +#include <stdint.h> + +/* We need a region in CMOS to store the RAMTOP address */ + +#define RAMTOP_SIGNATURE 0x52544F50 /* 'RTOP' */ + +#define RAMTOP_CMOS_OFFSET 0x64 + +/* + * Address of the ramtop_cmos_offset byte in CMOS. Should be reserved + * in mainboards' cmos.layout and not covered by checksum. + */ + +#if CONFIG(USE_OPTION_TABLE) +#include "option_table.h" +#if CMOS_VSTART_ramtop_cmos_offset != RAMTOP_CMOS_OFFSET * 8 +#error "CMOS start for RAMTOP_CMOS is not correct, check your cmos.layout" +#endif +#if CMOS_VLEN_ramtop_cmos_offset != 12 +#error "CMOS length for RAMTOP_CMOS bytes are not correct, check your cmos.layout" +#endif +#endif + +struct ramtop_table { + uint32_t signature; + uint32_t addr; + uint16_t checksum; +} __packed; + +/* Read and validate ramtop_table structure from CMOS */ +static int ramtop_cmos_read(struct ramtop_table *ramtop) +{ + u8 i, *p; + u16 csum; + + for (p = (u8 *)ramtop, i = 0; i < sizeof(*ramtop); i++, p++) + *p = cmos_read(RAMTOP_CMOS_OFFSET + i); + + /* Verify signature */ + if (ramtop->signature != RAMTOP_SIGNATURE) { + printk(BIOS_DEBUG, "ramtop_table invalid signature\n"); + return -1; + } + + /* Verify checksum over signature and counter only */ + csum = compute_ip_checksum(ramtop, offsetof(struct ramtop_table, checksum)); + + if (csum != ramtop->checksum) { + printk(BIOS_DEBUG, "ramtop_table checksum mismatch\n"); + return -1; + } + + return 0; +} + +/* Write ramtop_table structure to CMOS */ +static void ramtop_cmos_write(struct ramtop_table *ramtop) +{ + u8 i, *p; + + /* Checksum over signature and counter only */ + ramtop->checksum = compute_ip_checksum( + ramtop, offsetof(struct ramtop_table, checksum)); + + for (p = (u8 *)ramtop, i = 0; i < sizeof(*ramtop); i++, p++) + cmos_write(*p, RAMTOP_CMOS_OFFSET + i); +} + +/* Update the RAMTOP if required based on the input top_of_ram address */ +void update_ramtop(uint32_t addr) +{ + struct ramtop_table ramtop; + + /* Read and update ramtop (if required) */ + if (ramtop_cmos_read(&ramtop) < 0) { + /* Structure invalid, re-initialize */ + ramtop.signature = RAMTOP_SIGNATURE; + ramtop.addr = 0; + } + + /* Update ramtop if required */ + if (ramtop.addr == addr) + return; + + ramtop.addr = addr; + + /* Write the new top_of_ram address to CMOS */ + ramtop_cmos_write(&ramtop); + + printk(BIOS_DEBUG, "Updated the RAMTOP address into CMOS 0x%x\n", ramtop.addr); +} + +static uint32_t get_ramtop_addr(void) +{ + struct ramtop_table ramtop; + + if (ramtop_cmos_read(&ramtop) < 0) + return 0; + + return ramtop.addr; +} + +/* Early caching of top_of_ram region */ +void early_ramtop_enable_cache_range(void) +{ + uint32_t ramtop = get_ramtop_addr(); + if (!ramtop) + return; + + int mtrr = get_free_var_mtrr(); + if (mtrr == -1) { + printk(BIOS_WARNING, "ramtop_table update failure due to no free MTRR available!\n"); + return; + } + /* + * We need to make sure late romstage (including FSP-M post mem) will be run + * cached. Caching 16MB below ramtop is a safe to cover late romstage. + */ + set_var_mtrr(mtrr, ramtop - 16 * MiB, 16 * MiB, MTRR_TYPE_WRBACK); +} diff --git a/src/soc/intel/common/basecode/tom/Makefile.inc b/src/soc/intel/common/basecode/tom/Makefile.inc deleted file mode 100644 index 2ebf4bb25f..0000000000 --- a/src/soc/intel/common/basecode/tom/Makefile.inc +++ /dev/null @@ -1,2 +0,0 @@ -## SPDX-License-Identifier: GPL-2.0-only -romstage-$(CONFIG_SOC_INTEL_COMMON_BASECODE_TOM) += tom.c diff --git a/src/soc/intel/common/basecode/tom/tom.c b/src/soc/intel/common/basecode/tom/tom.c deleted file mode 100644 index de696d555d..0000000000 --- a/src/soc/intel/common/basecode/tom/tom.c +++ /dev/null @@ -1,127 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ - -#include <console/console.h> -#include <cpu/x86/mtrr.h> -#include <ip_checksum.h> -#include <intelbasecode/tom.h> -#include <pc80/mc146818rtc.h> -#include <stdint.h> - -/* We need a region in CMOS to store the TOM address */ - -#define TOM_SIGNATURE 0x5F544F4D /* '_TOM' */ - -#define TOM_CMOS_OFFSET 0x64 - -/* - * Address of the tom_cmos_offset byte in CMOS. Should be reserved - * in mainboards' cmos.layout and not covered by checksum. - */ - -#if CONFIG(USE_OPTION_TABLE) -#include "option_table.h" -#if CMOS_VSTART_tom_cmos_offset != TOM_CMOS_OFFSET * 8 -#error "CMOS start for TOM_CMOS is not correct, check your cmos.layout" -#endif -#if CMOS_VLEN_tom_cmos_offset != 12 -#error "CMOS length for TOM_CMOS bytes are not correct, check your cmos.layout" -#endif -#endif - -struct tom_table { - uint32_t signature; - uint32_t addr; - uint16_t checksum; -} __packed; - -/* Read and validate tom_table structure from CMOS */ -static int tom_cmos_read(struct tom_table *tom) -{ - u8 i, *p; - u16 csum; - - for (p = (u8 *)tom, i = 0; i < sizeof(*tom); i++, p++) - *p = cmos_read(TOM_CMOS_OFFSET + i); - - /* Verify signature */ - if (tom->signature != TOM_SIGNATURE) { - printk(BIOS_DEBUG, "tom_table invalid signature\n"); - return -1; - } - - /* Verify checksum over signature and counter only */ - csum = compute_ip_checksum(tom, offsetof(struct tom_table, checksum)); - - if (csum != tom->checksum) { - printk(BIOS_DEBUG, "tom_table checksum mismatch\n"); - return -1; - } - - return 0; -} - -/* Write tom_table structure to CMOS */ -static void tom_cmos_write(struct tom_table *tom) -{ - u8 i, *p; - - /* Checksum over signature and counter only */ - tom->checksum = compute_ip_checksum( - tom, offsetof(struct tom_table, checksum)); - - for (p = (u8 *)tom, i = 0; i < sizeof(*tom); i++, p++) - cmos_write(*p, TOM_CMOS_OFFSET + i); -} - -/* Update the TOM if required based on the input TOM address */ -void update_tom(uint32_t addr) -{ - struct tom_table tom; - - /* Read and increment boot count */ - if (tom_cmos_read(&tom) < 0) { - /* Structure invalid, re-initialize */ - tom.signature = TOM_SIGNATURE; - tom.addr = 0; - } - - /* Update TOM if required */ - if (tom.addr == addr) - return; - - tom.addr = addr; - - /* Write the new count to CMOS */ - tom_cmos_write(&tom); - - printk(BIOS_DEBUG, "Updated the TOM address into CMOS 0x%x\n", tom.addr); -} - -static uint32_t get_tom_addr(void) -{ - struct tom_table tom; - - if (tom_cmos_read(&tom) < 0) - return 0; - - return tom.addr; -} - -/* Early caching of TOM region */ -void early_tom_enable_cache_range(void) -{ - uint32_t tom = get_tom_addr(); - if (!tom) - return; - - int mtrr = get_free_var_mtrr(); - if (mtrr == -1) { - printk(BIOS_WARNING, "tom_table update failure due to no free MTRR available!\n"); - return; - } - /* - * We need to make sure late romstage (including FSP-M post mem) will be run - * cached. Caching 16MB below TOM is a safe to cover late romstage. - */ - set_var_mtrr(mtrr, tom - 16 * MiB, 16 * MiB, MTRR_TYPE_WRBACK); -} diff --git a/src/soc/intel/common/block/systemagent/memmap.c b/src/soc/intel/common/block/systemagent/memmap.c index 380974e4a7..e82c696a88 100644 --- a/src/soc/intel/common/block/systemagent/memmap.c +++ b/src/soc/intel/common/block/systemagent/memmap.c @@ -6,7 +6,7 @@ #include <console/console.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/smm.h> -#include <intelbasecode/tom.h> +#include <intelbasecode/ramtop.h> #include <intelblocks/fast_spi.h> #include <intelblocks/systemagent.h> #include <types.h> @@ -71,11 +71,11 @@ void fill_postcar_frame(struct postcar_frame *pcf) printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram); /* - * Store the top_of_ram (TOM) into the CMOS if SOC_INTEL_COMMON_BASECODE_TOM + * Store the top_of_ram (ramtop) into the CMOS if SOC_INTEL_COMMON_BASECODE_RAMTOP * config is enabled. */ - if (ENV_ROMSTAGE && CONFIG(SOC_INTEL_COMMON_BASECODE_TOM)) - update_tom(top_of_ram); + if (ENV_ROMSTAGE && CONFIG(SOC_INTEL_COMMON_BASECODE_RAMTOP)) + update_ramtop(top_of_ram); postcar_frame_add_mtrr(pcf, top_of_ram - 16 * MiB, 16 * MiB, MTRR_TYPE_WRBACK); diff --git a/src/soc/intel/meteorlake/Kconfig b/src/soc/intel/meteorlake/Kconfig index b9b1df0f6f..e114a67ab2 100644 --- a/src/soc/intel/meteorlake/Kconfig +++ b/src/soc/intel/meteorlake/Kconfig @@ -84,7 +84,7 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON_BLOCK_XHCI select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG select SOC_INTEL_COMMON_BASECODE - select SOC_INTEL_COMMON_BASECODE_TOM + select SOC_INTEL_COMMON_BASECODE_RAMTOP select SOC_INTEL_COMMON_FSP_RESET select SOC_INTEL_COMMON_PCH_CLIENT select SOC_INTEL_COMMON_RESET |