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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2012-04-06 04:03:50 +0300 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-04-06 04:57:04 +0200 |
| commit | f8c7c2396eb843b17fd32d19bd9e481e088cee57 (patch) | |
| tree | 4b1bd330bd546102a10b27f951742b5821f61d45 /src/arch | |
| parent | 334532eeffac3a26ffbd25bdf4808b87cad2a208 (diff) | |
| download | coreboot-f8c7c2396eb843b17fd32d19bd9e481e088cee57.tar.xz | |
Fix support for RAM-less multi-processor init
Fix regression after commit:
7dfe32c5408916b6cb23f1ec48e473e1c728d300
Only align 16-bit entry on platforms that really require it,
indicated by selecting SIPI_VECTOR_IN_ROM in CPU Kconfig.
Disable assertion test of AP_SIPI_VECTOR for platforms not
depending on this feature.
Build of romstage should be fixed to get the vector address from
bootblock build automatically.
Change-Id: Ide470833c0254df1a9ff708369ab1c095ccfb98d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/875
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/Kconfig | 7 | ||||
| -rw-r--r-- | src/arch/x86/init/ldscript_failover.lb | 14 |
2 files changed, 16 insertions, 5 deletions
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig index f49d09b872..6d56ec6bfc 100644 --- a/src/arch/x86/Kconfig +++ b/src/arch/x86/Kconfig @@ -8,6 +8,13 @@ config AP_IN_SIPI_WAIT default n depends on ARCH_X86 +# Aligns 16bit entry code in bootblock so that hyper-threading CPUs +# can boot AP CPUs to enable their shared caches. +config SIPI_VECTOR_IN_ROM + bool + default n + depends on ARCH_X86 + config RAMBASE hex default 0x100000 diff --git a/src/arch/x86/init/ldscript_failover.lb b/src/arch/x86/init/ldscript_failover.lb index 61c3d2a35b..d6940eece7 100644 --- a/src/arch/x86/init/ldscript_failover.lb +++ b/src/arch/x86/init/ldscript_failover.lb @@ -30,10 +30,11 @@ TARGET(binary) SECTIONS { /* Symbol ap_sipi_vector must be aligned to 4kB to start AP CPUs - * with Startup IPI message without RAM. + * with Startup IPI message without RAM. Align .rom to next 4 byte + * boundary anyway, so no pad byte appears between _rom and _start. */ .bogus ROMLOC_MIN : { - . = ALIGN(4096); + . = CONFIG_SIPI_VECTOR_IN_ROM ? ALIGN(4096) : ALIGN(4); ROMLOC = .; } >rom = 0xff @@ -52,11 +53,14 @@ SECTIONS * may cause the total size of a section to change when the start * address gets applied. */ - ROMLOC_MIN = 0xffffff00 - (_erom - _rom + 16) - 4096; + ROMLOC_MIN = 0xffffff00 - (_erom - _rom + 16) - + (CONFIG_SIPI_VECTOR_IN_ROM ? 4096 : 0); /* Post-check proper SIPI vector. */ - _bogus = ASSERT(((ap_sipi_vector & 0x0fff) == 0x0), "Bad SIPI vector alignment"); - _bogus = ASSERT((ap_sipi_vector == CONFIG_AP_SIPI_VECTOR), "Address mismatch on AP_SIPI_VECTOR"); + _bogus = ASSERT(!CONFIG_SIPI_VECTOR_IN_ROM || ((ap_sipi_vector & 0x0fff) == 0x0), + "Bad SIPI vector alignment"); + _bogus = ASSERT(!CONFIG_SIPI_VECTOR_IN_ROM || (ap_sipi_vector == CONFIG_AP_SIPI_VECTOR), + "Address mismatch on AP_SIPI_VECTOR"); /DISCARD/ : { *(.comment) |