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x86: Allow putting some tables in the bloblist

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At present all tables are placed starting at address f0000 in memory, and
can be up to 64KB in size. If the tables are very large, this may not
provide enough space.

Also if the tables point to other tables (such as console log or a ramoops
area) then we must allocate other memory anyway.

The bloblist is a nice place to put these tables since it is contiguous,
which makes it easy to reserve this memory for linux using the 820 tables.

Add an option to put some of the tables in the bloblist. For SMBIOS and
ACPI, create suitable pointers from the f0000 region to the new location
of the tables.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: squashed in http://patchwork.ozlabs.org/project/uboot/patch/
 20201105062407.1.I8091ad931cbbb5e3b6f6ababdf3f8d5db0d17bb9@changeid/]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-11-04 09:57:25 -07:00
committed by Bin Meng
parent f36e4c7d80
commit d2cb7a22da
5 changed files with 69 additions and 5 deletions
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9
lib/Kconfig
View File

@@ -637,6 +637,15 @@ config FDT_FIXUP_PARTITIONS
menu "System tables"
depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
config BLOBLIST_TABLES
bool "Put tables in a bloblist"
depends on X86
help
Normally tables are placed at address 0xf0000 and can be up to 64KB
long. With this option, tables are instead placed in the bloblist
with a pointer from 0xf0000. The size can then be larger and the
tables can be placed high in memory.
config GENERATE_SMBIOS_TABLE
bool "Generate an SMBIOS (System Management BIOS) table"
default y

4
lib/acpi/acpi_table.c
View File

@@ -183,8 +183,8 @@ int acpi_add_table(struct acpi_ctx *ctx, void *table)
return 0;
}
static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
struct acpi_xsdt *xsdt)
void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
struct acpi_xsdt *xsdt)
{
memset(rsdp, 0, sizeof(struct acpi_rsdp));