From: Gregory CLEMENT <gregory.clement@bootlin.com>
To: Paul Burton <paulburton@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@vger.kernel.org, Jiaxun Yang <jiaxun.yang@flygoat.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Vladimir Kondratiev" <vladimir.kondratiev@mobileye.com>,
"Tawfik Bayouk" <tawfik.bayouk@mobileye.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Théo Lebrun" <theo.lebrun@bootlin.com>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>
Subject: [PATCH v3 12/22] MIPS: Get rid of CONFIG_NO_EXCEPT_FILL
Date: Fri, 1 Dec 2023 12:14:55 +0100 [thread overview]
Message-ID: <20231201111512.803120-13-gregory.clement@bootlin.com> (raw)
In-Reply-To: <20231201111512.803120-1-gregory.clement@bootlin.com>
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
NO_EXCEPT_FILL is used to indicate platform that does not
need to reserve ebase memory at start of kernel.
This is true for all R2+ platform as they allocate ebase
memory on fly, and also true for any platform that does
not load kernel at start of physical memory.
Get rid this Kconfig symbol by use macro to detect conditions
above.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
arch/mips/Kconfig | 8 --------
arch/mips/kernel/head.S | 7 +++++--
2 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 11bacbd3971f6..88965b8f8fcc4 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -150,7 +150,6 @@ config MIPS_GENERIC_KERNEL
select MIPS_CPU_SCACHE
select MIPS_GIC
select MIPS_L1_CACHE_SHIFT_7
- select NO_EXCEPT_FILL
select PCI_DRIVERS_GENERIC
select SMP_UP if SMP
select SWAP_IO_SPACE
@@ -244,7 +243,6 @@ config BMIPS_GENERIC
select ARCH_HAS_RESET_CONTROLLER
select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
select BOOT_RAW
- select NO_EXCEPT_FILL
select USE_OF
select CEVT_R4K
select CSRC_R4K
@@ -288,7 +286,6 @@ config BCM47XX
select HAVE_PCI
select IRQ_MIPS_CPU
select SYS_HAS_CPU_MIPS32_R1
- select NO_EXCEPT_FILL
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_MIPS16
@@ -424,7 +421,6 @@ config LANTIQ
select IRQ_MIPS_CPU
select CEVT_R4K
select CSRC_R4K
- select NO_EXCEPT_FILL
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
select SYS_SUPPORTS_BIG_ENDIAN
@@ -473,7 +469,6 @@ config MACH_LOONGSON64
select ISA
select I8259
select IRQ_MIPS_CPU
- select NO_EXCEPT_FILL
select NR_CPUS_DEFAULT_64
select USE_GENERIC_EARLY_PRINTK_8250
select PCI_DRIVERS_GENERIC
@@ -1156,9 +1151,6 @@ config PCI_GT64XXX_PCI0
config PCI_XTALK_BRIDGE
bool
-config NO_EXCEPT_FILL
- bool
-
config MIPS_SPRAM
bool
diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S
index b825ed4476c70..4af53b1628f57 100644
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -59,10 +59,13 @@
#endif
.endm
-#ifndef CONFIG_NO_EXCEPT_FILL
+#if (MIPS_ISA_REV < 2) && \
+ ((VMLINUX_LOAD_ADDRESS == KSEG0) || \
+ (VMLINUX_LOAD_ADDRESS == CKSEG0))
/*
* Reserved space for exception handlers.
- * Necessary for machines which link their kernels at KSEG0.
+ * Necessary for machines which link their kernels at KSEG0
+ * and incapable of moving ebase.
*/
.fill 0x400
#endif
--
2.42.0
next prev parent reply other threads:[~2023-12-01 11:15 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-01 11:14 [PATCH v3 00/22] Add support for the Mobileye EyeQ5 SoC Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 01/22] MIPS: compressed: Use correct instruction for 64 bit code Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 02/22] MIPS: Export higher/highest relocation functions in uasm Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 03/22] MIPS: spaces: Define a couple of handy macros Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 04/22] MIPS: genex: Fix except_vec_vi for kernel in XKPHYS Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 05/22] MIPS: Fix set_uncached_handler for ebase " Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 06/22] MIPS: Refactor mips_cps_core_entry implementation Gregory CLEMENT
2023-12-05 16:34 ` Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 07/22] MIPS: Fix cache issue with mips_cps_core_entry Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 08/22] MIPS: Allow kernel base to be set from Kconfig for all platforms Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 09/22] MIPS: traps: Handle CPU with non standard vint offset Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 10/22] MIPS: Avoid unnecessary reservation of exception space Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 11/22] MIPS: traps: Enhance memblock ebase allocation process Gregory CLEMENT
2023-12-01 11:14 ` Gregory CLEMENT [this message]
2023-12-06 0:40 ` [PATCH v3 12/22] MIPS: Get rid of CONFIG_NO_EXCEPT_FILL kernel test robot
2023-12-01 11:14 ` [PATCH v3 13/22] MIPS: traps: Give more explanations if ebase doesn't belong to KSEG0 Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 14/22] dt-bindings: Add vendor prefix for Mobileye Vision Technologies Ltd Gregory CLEMENT
2023-12-01 11:14 ` [PATCH v3 15/22] dt-bindings: mips: cpus: Sort the entries Gregory CLEMENT
2023-12-01 12:03 ` Krzysztof Kozlowski
2023-12-01 12:31 ` Serge Semin
2023-12-01 11:14 ` [PATCH v3 16/22] dt-bindings: mips: cpu: Add I-Class I6500 Multiprocessor Core Gregory CLEMENT
2023-12-01 12:03 ` Krzysztof Kozlowski
2023-12-01 11:15 ` [PATCH v3 17/22] dt-bindings: mips: Add bindings for Mobileye SoCs Gregory CLEMENT
2023-12-01 11:15 ` [PATCH v3 18/22] dt-bindings: mfd: syscon: Document EyeQ5 OLB Gregory CLEMENT
2023-12-01 11:15 ` [PATCH v3 19/22] MIPS: mobileye: Add EyeQ5 dtsi Gregory CLEMENT
2023-12-01 11:15 ` [PATCH v3 20/22] MIPS: mobileye: Add EPM5 device tree Gregory CLEMENT
2023-12-01 11:15 ` [PATCH v3 21/22] MIPS: generic: Add support for Mobileye EyeQ5 Gregory CLEMENT
2023-12-01 11:47 ` Jiaxun Yang
2023-12-01 11:15 ` [PATCH v3 22/22] MAINTAINERS: Add entry for Mobileye MIPS SoCs Gregory CLEMENT
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