From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 18/27] ARM: mmu: always do MMU initialization early when MMU is enabled
Date: Fri, 12 May 2023 13:09:59 +0200 [thread overview]
Message-ID: <20230512111008.1120833-19-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20230512111008.1120833-1-s.hauer@pengutronix.de>
Drop the CONFIG_MMU_EARLY and make early MMU initialization the default.
Doing so allows us for some simplifications in the MMU code as we have
less code pathes to care and think about.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/cpu/start.c | 2 +-
arch/arm/cpu/uncompress.c | 2 +-
common/Kconfig | 9 ---------
3 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index 0b08af0176..4ce4579903 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -216,7 +216,7 @@ __noreturn __no_sanitize_address void barebox_non_pbl_start(unsigned long membas
mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1);
- if (IS_ENABLED(CONFIG_MMU_EARLY) && !IS_ENABLED(CONFIG_PBL_IMAGE)) {
+ if (IS_ENABLED(CONFIG_MMU) && !IS_ENABLED(CONFIG_PBL_IMAGE)) {
arm_early_mmu_cache_invalidate();
mmu_early_enable(membase, memsize);
}
diff --git a/arch/arm/cpu/uncompress.c b/arch/arm/cpu/uncompress.c
index 7c85f5a1fe..0bfce8853d 100644
--- a/arch/arm/cpu/uncompress.c
+++ b/arch/arm/cpu/uncompress.c
@@ -81,7 +81,7 @@ void __noreturn barebox_pbl_start(unsigned long membase, unsigned long memsize,
pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize);
- if (IS_ENABLED(CONFIG_MMU_EARLY))
+ if (IS_ENABLED(CONFIG_MMU))
mmu_early_enable(membase, memsize);
free_mem_ptr = arm_mem_early_malloc(membase, endmem);
diff --git a/common/Kconfig b/common/Kconfig
index ac3df75acb..c6008f125b 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -185,15 +185,6 @@ config MMU
to enable the data cache which depends on the MMU. See Documentation/mmu.txt
for further information.
-config MMU_EARLY
- bool "Enable MMU early"
- depends on ARM
- depends on MMU
- default y
- help
- This enables the MMU during early startup. This speeds up things during startup
- of barebox, but may lead to harder to debug code. If unsure say yes here.
-
config HAVE_CONFIGURABLE_TEXT_BASE
bool
--
2.39.2
next prev parent reply other threads:[~2023-05-12 11:11 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-12 11:09 [PATCH 00/27] ARM: MMU rework Sascha Hauer
2023-05-12 11:09 ` [PATCH 01/27] ARM: fix scratch mem position with OP-TEE Sascha Hauer
2023-05-12 17:17 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 02/27] ARM: drop cache function initialization Sascha Hauer
2023-05-12 17:19 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 03/27] ARM: Add _32 suffix to aarch32 specific filenames Sascha Hauer
2023-05-12 17:21 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 04/27] ARM: cpu.c: remove unused include Sascha Hauer
2023-05-12 17:22 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 05/27] ARM: mmu-common.c: use common mmu include Sascha Hauer
2023-05-12 17:23 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 06/27] ARM: mmu32: rename mmu.h to mmu_32.h Sascha Hauer
2023-05-12 17:23 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 07/27] ARM: mmu: implement MAP_FAULT Sascha Hauer
2023-05-12 11:09 ` [PATCH 08/27] ARM: mmu64: Use arch_remap_range where possible Sascha Hauer
2023-05-12 17:40 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 09/27] ARM: mmu32: implement zero_page_*() Sascha Hauer
2023-05-12 11:09 ` [PATCH 10/27] ARM: i.MX: Drop HAB workaround Sascha Hauer
2023-05-12 18:09 ` Ahmad Fatoum
2023-05-16 8:23 ` Sascha Hauer
2023-05-12 11:09 ` [PATCH 11/27] ARM: Move early MMU after malloc initialization Sascha Hauer
2023-05-12 18:10 ` Ahmad Fatoum
2023-05-12 11:09 ` [PATCH 12/27] ARM: mmu: move dma_sync_single_for_device to extra file Sascha Hauer
2023-05-12 18:30 ` Ahmad Fatoum
2023-05-16 9:09 ` Sascha Hauer
2023-05-12 11:09 ` [PATCH 13/27] ARM: mmu: merge mmu-early_xx.c into mmu_xx.c Sascha Hauer
2023-05-12 11:09 ` [PATCH 14/27] ARM: mmu: alloc 64k for early page tables Sascha Hauer
2023-05-12 11:09 ` [PATCH 15/27] ARM: mmu32: create alloc_pte() Sascha Hauer
2023-05-12 11:09 ` [PATCH 16/27] ARM: mmu64: " Sascha Hauer
2023-05-12 11:09 ` [PATCH 17/27] ARM: mmu: drop ttb argument Sascha Hauer
2023-05-12 11:09 ` Sascha Hauer [this message]
2023-05-12 11:10 ` [PATCH 19/27] ARM: mmu32: Assume MMU is on Sascha Hauer
2023-05-12 11:10 ` [PATCH 20/27] ARM: mmu32: Fix pmd_flags_to_pte() for ARMv4/5/6 Sascha Hauer
2023-05-12 11:10 ` [PATCH 21/27] ARM: mmu32: Add pte_flags_to_pmd() Sascha Hauer
2023-05-12 11:10 ` [PATCH 22/27] ARM: mmu32: add get_pte_flags, get_pmd_flags Sascha Hauer
2023-05-12 11:10 ` [PATCH 23/27] ARM: mmu32: move functions into c file Sascha Hauer
2023-05-12 11:10 ` [PATCH 24/27] ARM: mmu32: read TTB value from register Sascha Hauer
2023-05-12 11:10 ` [PATCH 25/27] ARM: mmu32: Use pages for early MMU setup Sascha Hauer
2023-05-12 11:10 ` [PATCH 26/27] ARM: mmu32: Skip reserved ranges during initialization Sascha Hauer
2023-05-12 11:10 ` [PATCH 27/27] ARM: mmu64: Use two level pagetables in early code Sascha Hauer
2023-05-16 10:55 ` Sascha Hauer
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