diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2019-11-01 17:30:05 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-12-06 15:16:47 +0000 |
| commit | 67910db907fb3d5feacdbfaa40952a88f673795a (patch) | |
| tree | b174ff649ea7c5d301191dd66d3789a9a055cfbf /src/arch | |
| parent | 4ba70a75758711b1665545f754cbe11235df5097 (diff) | |
arch|cpu/x86: Add Kconfig option for x86 reset vector
Prepare for an implementation supporting the reset vector in RAM and
not the traditional 0xfffffff0. Add a Kconfig symbol that can be used
in place of hardcoded values.
Change-Id: I6a814f7179ee4251aeeccb2555221616e944e03d
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37485
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/Kconfig | 10 | ||||
| -rw-r--r-- | src/arch/x86/failover.ld | 2 | ||||
| -rw-r--r-- | src/arch/x86/id.ld | 2 | ||||
| -rw-r--r-- | src/arch/x86/memlayout.ld | 2 |
4 files changed, 13 insertions, 3 deletions
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig index 0e6f486d03..e27aec2463 100644 --- a/src/arch/x86/Kconfig +++ b/src/arch/x86/Kconfig @@ -87,6 +87,16 @@ config AP_IN_SIPI_WAIT default n depends on ARCH_X86 && SMP +config X86_RESET_VECTOR + hex + depends on ARCH_X86 + default 0xfffffff0 + help + Specify the location of the x86 reset vector. In traditional devices + this must match the architectural reset vector to produce a bootable + image. Nontraditional designs may use this to position the reset + vector into its desired location. + config RESET_VECTOR_IN_RAM bool depends on ARCH_X86 diff --git a/src/arch/x86/failover.ld b/src/arch/x86/failover.ld index 334145a742..139136540c 100644 --- a/src/arch/x86/failover.ld +++ b/src/arch/x86/failover.ld @@ -14,7 +14,7 @@ ENTRY(_start) MEMORY { - rom : ORIGIN = 0xffff0000, LENGTH = 64K + rom : ORIGIN = CONFIG_X86_RESET_VECTOR - 0xfff0, LENGTH = 64K } TARGET(binary) diff --git a/src/arch/x86/id.ld b/src/arch/x86/id.ld index 2a50f9ca4f..3d9ef37ab9 100644 --- a/src/arch/x86/id.ld +++ b/src/arch/x86/id.ld @@ -12,7 +12,7 @@ */ SECTIONS { - . = (0xffffffff - CONFIG_ID_SECTION_OFFSET) - (__id_end - __id_start) + 1; + . = (CONFIG_X86_RESET_VECTOR - CONFIG_ID_SECTION_OFFSET) - (__id_end - __id_start) + 0x10; .id (.): { KEEP(*(.id)) } diff --git a/src/arch/x86/memlayout.ld b/src/arch/x86/memlayout.ld index f8ae9f3918..b14fd624a7 100644 --- a/src/arch/x86/memlayout.ld +++ b/src/arch/x86/memlayout.ld @@ -50,7 +50,7 @@ SECTIONS #include EARLY_MEMLAYOUT #elif ENV_BOOTBLOCK /* arch/x86/bootblock.ld contains the logic for the ROMCC_BOOTBLOCK linking. */ - BOOTBLOCK(0xffffffff - CONFIG_C_ENV_BOOTBLOCK_SIZE + 1, + BOOTBLOCK(CONFIG_X86_RESET_VECTOR - CONFIG_C_ENV_BOOTBLOCK_SIZE + 0x10, CONFIG_C_ENV_BOOTBLOCK_SIZE) #include EARLY_MEMLAYOUT |