From: Rouven Czerwinski <r.czerwinski@pengutronix.de> To: barebox@lists.infradead.org Cc: Rouven Czerwinski <r.czerwinski@pengutronix.de> Subject: [PATCH v2 0/8] XN Support for reserved-memory areas Date: Tue, 3 Aug 2021 11:44:10 +0200 [thread overview] Message-ID: <20210803094418.475609-1-r.czerwinski@pengutronix.de> (raw) This is v2 of a series to properly handle reserved memory areas with the no-map property. This allows us to early load OP-TEE, while also prohibiting the CPU from speculating into the OP-TEE area by mapping the OP-TEE area as uncached and eXecute Never. We also parse the device tree reserved memory areas from the DT passed into barebox proper, to also remove no-map entries from the MMU there. Rouven Czerwinski (8): of: reserve: add xn flag mem entries of: add of_get_reserve_map stub for !CONFIG_OFTREE ARM: mmu: use reserve mem entries to modify maps of: add flag to not create resmem DT entries of: add reserved_mem_read initcall pbl: fdt: add support to parse reserved mem ARM: mmu-early: map no-map entries XN & uncached PBL: enable LIBFDT for OP-TEE early loading arch/arm/cpu/mmu-early.c | 13 +++++ arch/arm/cpu/mmu.c | 34 ++++++++++- arch/arm/cpu/sm.c | 2 +- arch/arm/cpu/start.c | 2 +- arch/arm/mach-layerscape/ppa.c | 2 +- common/Kconfig | 1 + common/bootm.c | 3 +- drivers/of/Makefile | 1 + drivers/of/fdt.c | 16 +++-- drivers/of/reserved-mem.c | 43 ++++++++++++++ drivers/video/fb.c | 3 +- drivers/video/simplefb-fixup.c | 2 +- fs/pstore/ram.c | 3 +- include/of.h | 14 ++++- include/pbl.h | 25 ++++++++ pbl/fdt.c | 103 ++++++++++++++++++++++++++++----- 16 files changed, 237 insertions(+), 30 deletions(-) create mode 100644 drivers/of/reserved-mem.c -- 2.32.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
next reply other threads:[~2021-08-03 9:46 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-03 9:44 Rouven Czerwinski [this message] 2021-08-03 9:44 ` [PATCH v2 1/8] of: reserve: add xn flag mem entries Rouven Czerwinski 2021-08-05 13:54 ` Ahmad Fatoum 2021-08-09 18:26 ` Sascha Hauer 2021-08-03 9:44 ` [PATCH v2 2/8] of: add of_get_reserve_map stub for !CONFIG_OFTREE Rouven Czerwinski 2021-08-05 13:55 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 3/8] ARM: mmu: use reserve mem entries to modify maps Rouven Czerwinski 2021-08-05 14:06 ` Ahmad Fatoum 2021-08-09 18:30 ` Sascha Hauer 2021-08-24 7:09 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 4/8] of: add flag to not create resmem DT entries Rouven Czerwinski 2021-08-05 14:09 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 5/8] of: add reserved_mem_read initcall Rouven Czerwinski 2021-08-05 14:14 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 6/8] pbl: fdt: add support to parse reserved mem Rouven Czerwinski 2021-08-05 14:20 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 7/8] ARM: mmu-early: map no-map entries XN & uncached Rouven Czerwinski 2021-08-05 14:24 ` Ahmad Fatoum 2021-08-03 9:44 ` [PATCH v2 8/8] PBL: enable LIBFDT for OP-TEE early loading Rouven Czerwinski 2021-08-05 13:53 ` Ahmad Fatoum 2021-08-24 6:47 ` Rouven Czerwinski
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