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Jonathan Zhang e111de0752 lib: set up specific purpose memory as LB_MEM_SOFT_RESERVED 
CXL (Compute Express Link) [1] is a cache-coherent interconnect
standard for processors, memory expansion and accelerators.

CXL memory is provided through CXL device which is connected
through CXL/PCIe link, while regular system memory is provided
through DIMMs plugged into DIMM slots which are connected to
memory controllers of processor.

With CXL memory, the server's memory capacity is increased.
CXL memory is in its own NUMA domain, with longer latency
and added bandwidth, comparing to regular system memory.

Host firmware may present CXL memory as specific purpose memory.
Linux kernel dax driver provides direct access to such differentiated
memory. In particular, hmem dax driver provides direct access to
specific purpose memory.

Specific purpose memory needs to be represented in e820 table as
soft reserved, as described in [2].

Add IORESOURCE_SOFT_RESERVE resource property to indicate (memory)
resource that needs to be soft reserved.

Add soft_reserved_ram_resource macro to allow soc/mb code to add
memory resource as soft reserved.

[1] https://www.computeexpresslink.org/

[2] https://web.archive.org/web/20230130233752/https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.32&id=262b45ae3ab4bf8e2caf1fcfd0d8307897519630

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Change-Id: Ie70795bcb8c97e9dd5fb772adc060e1606f9bab0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52585
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
2023-03-03 11:10:38 +00:00
..
gnat lib/gnat: Remove Compiler_Unit_Warning pragmas 2023-02-26 13:30:35 +00:00
asan.c lib/asan.c: Update SPDX license 2021-02-01 08:53:22 +00:00
b64_decode.c treewide: replace GPLv2 long form headers with SPDX header 2020-05-06 22:20:57 +00:00
bmp_logo.c drivers/intel/fsp1_1,fsp2_0: Refactor logo display 2021-02-09 07:52:31 +00:00
boot_device.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
bootblock.c timestamps: Rename timestamps to make names more consistent 2022-03-08 16:06:33 +00:00
bootmem.c lib: set up specific purpose memory as LB_MEM_SOFT_RESERVED 2023-03-03 11:10:38 +00:00
bootmode.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
bootsplash.c cbfs: Simplify load/map API names, remove type arguments 2020-12-02 22:13:17 +00:00
cb.ads lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
cbfs.c treewide: stop calling custom TPM log "TCPA" 2023-01-11 16:00:55 +00:00
cbfs_master_header.c Makefile.inc: Generate master header and pointer as C structs 2022-05-12 11:11:53 +00:00
cbmem_common.c src: Remove unused 'include <bootstate.h>' 2020-06-02 07:40:35 +00:00
cbmem_console.c CBMEM: Change declarations for initialization hooks 2022-05-20 07:15:39 +00:00
cbmem_stage_cache.c treewide: Remove "ERROR: "/"WARN: " prefixes from log messages 2022-02-07 23:29:09 +00:00
compute_ip_checksum.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
coreboot_table.c treewide: stop calling custom TPM log "TCPA" 2023-01-11 16:00:55 +00:00
crc_byte.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
decompressor.c timestamps: Rename timestamps to make names more consistent 2022-03-08 16:06:33 +00:00
delay.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
device_tree.c lib/device_tree.c: Change log level message 2022-12-22 03:27:34 +00:00
dimm_info_util.c arch/x86: Refactor the SMBIOS type 17 write function 2021-11-11 09:10:10 +00:00
dp_aux.c Use the fallthrough statement in switch loops 2022-02-16 21:29:53 +00:00
edid.c Use the fallthrough statement in switch loops 2022-02-16 21:29:53 +00:00
edid_fill_fb.c lib/edid_fill_fb.c: Remove unused <bootsplash.h> 2022-04-24 17:44:24 +00:00
espi_debug.c lib/espi_debug: Add espi_show_slave_peripheral_channel_configuration 2021-04-23 21:20:26 +00:00
ext_stage_cache.c CBMEM: Change declarations for initialization hooks 2022-05-20 07:15:39 +00:00
fallback_boot.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
fit.c lib/fit.c: Don't align memory regions to 1MB 2022-07-08 00:00:24 +00:00
fit_payload.c timestamps: Rename timestamps to make names more consistent 2022-03-08 16:06:33 +00:00
fmap.c CBMEM: Change declarations for initialization hooks 2022-05-20 07:15:39 +00:00
fw_config.c lib: Introduce fw_config_get_field 2022-12-17 20:43:16 +00:00
gcc.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
gcov-glue.c tree: Use __func__ instead of hard-coded names 2023-02-17 16:08:04 +00:00
gcov-io.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
gcov-io.h lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
gcov-iov.h lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
gpio.c gpio: Pull down HiZ pins after reading tristate GPIO strapping 2020-08-06 23:54:41 +00:00
halt.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
hardwaremain.c timer: Change timer util functions to 64-bit 2022-09-14 11:55:39 +00:00
hexdump.c lib/hexdump: remove hexdump32 and use hexdump instead 2021-05-27 15:41:15 +00:00
hexstrtobin.c treewide: Convert more license headers to SPDX style 2020-05-11 19:37:19 +00:00
hw-time-timer.adb treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
imd.c lib: Remove unused <stdlib.h> and use <types.h> when appropriate 2022-04-24 17:43:57 +00:00
imd_cbmem.c cbmem_top_chipset: Change the return value to uintptr_t 2022-11-18 16:00:45 +00:00
jpeg.c src/lib/jpeg.c: Drop dead code 2020-07-09 23:50:51 +00:00
jpeg.h treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
Kconfig lib: Hook up libhwbase in romstage 2022-12-17 20:51:38 +00:00
Kconfig.cbfs_verification cbfs_verification: Remove dependency on VBOOT_STARTS_BEFORE_BOOTBLOCK 2022-10-26 17:19:22 +00:00
libgcc.c treewide: Replace CONFIG(ARCH_xx) tests 2020-06-17 21:13:09 +00:00
libgcov.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
list.c lib/list: Add list_append 2021-11-03 08:29:16 +00:00
lzma.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
lzmadecode.c lib/lzma: Build the source for decompression with flag -Ofast 2022-10-12 16:55:58 +00:00
lzmadecode.h
Makefile.inc src/lib: Include LZMA in romstage for FSP-M 2023-01-08 01:21:46 +00:00
malloc.c tree: Use __func__ instead of hard-coded names 2023-02-17 16:08:04 +00:00
master_header_pointer.c Kconfig: Add an option to skip adding a cbfs bootblock on x86 2022-05-12 11:12:21 +00:00
memchr.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
memcmp.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
memcpy.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
memmove.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
memrange.c allocator_v4: Introduce RESOURCE_ALLOCATION_TOP_DOWN 2022-09-04 16:35:22 +00:00
memset.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
metadata_hash.c cbfs/vboot: Adapt to new vb2_digest API 2022-09-02 23:51:29 +00:00
nhlt.c lib/nhlt, soc/intel/skl: Update NHLT to program feedback config 2022-12-21 13:57:48 +00:00
primitive_memtest.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
prog_loaders.c lib/prog_loaders.c: Clean up includes 2022-10-06 18:13:30 +00:00
prog_ops.c lib/prog_ops.c: Add <types.h> 2022-10-06 18:13:19 +00:00
program.ld arch/x86: Only use .bss from car.ld when running XIP 2022-10-20 14:43:40 +00:00
ramdetect.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
ramtest.c lib/ramtest.c: Use {read,write}32p() 2022-12-10 00:01:05 +00:00
reg_script.c lib/reg_script: Add cast to fix compilation on x86_64 2020-12-01 16:00:57 +00:00
region_file.c src/acpi to src/lib: Fix spelling errors 2021-10-05 18:06:39 +00:00
reset.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
rmodule.c payloads,src: Replace ALIGN(x, a) by ALIGN_UP(x, a) for clarity 2022-10-13 19:14:57 +00:00
rmodule.ld lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
romstage_handoff.c ACPI S3: Replace stashed acpi_slp_typ value 2021-01-23 20:19:47 +00:00
rtc.c lib/rtc: Add sanity check for time and date 2021-05-30 20:24:13 +00:00
selfboot.c /: Remove extra space after comma 2022-11-30 03:07:23 +00:00
spd_bin.c lib: Add LPDDR5x DRAM type 2022-11-07 02:29:23 +00:00
spd_cache.c lib: Check for non-existent DIMMs in check_if_dimm_changed 2022-04-20 06:57:21 +00:00
stack.c symbols.h: Add macro to define memlayout region symbols 2019-02-22 06:44:02 +00:00
string.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
thread.c timer: Change timer util functions to 64-bit 2022-09-14 11:55:39 +00:00
timer.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
timer_queue.c lib/timer_queue.c: Fix function signature 2022-09-23 17:34:30 +00:00
timestamp.c CBMEM: Change declarations for initialization hooks 2022-05-20 07:15:39 +00:00
ubsan.c lib/ubsan.c: Remove GCC 5.x workaround 2020-10-05 16:18:24 +00:00
uuid.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
version.c lib: Add SPDX identifiers to files missing them 2022-08-11 17:53:29 +00:00
wrdd.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
xxhash.c lib/xxhash.c: Add new hash functions 2022-09-07 22:24:51 +00:00