From: Rouven Czerwinski <r.czerwinski@pengutronix.de> To: barebox@lists.infradead.org Cc: Rouven Czerwinski <r.czerwinski@pengutronix.de> Subject: [PATCH v2 5/8] of: add reserved_mem_read initcall Date: Tue, 3 Aug 2021 11:44:15 +0200 [thread overview] Message-ID: <20210803094418.475609-6-r.czerwinski@pengutronix.de> (raw) In-Reply-To: <20210803094418.475609-1-r.czerwinski@pengutronix.de> Add a reserved_mem_read initcall which parses the reserved-memory entries and adds barebox of reserve entries. Also remove the OP-TEE size of reserve entry, since this is now parsed from the DT and does not need to be statically configured any longer. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> --- drivers/of/Makefile | 1 + drivers/of/reserved-mem.c | 43 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) create mode 100644 drivers/of/reserved-mem.c diff --git a/drivers/of/Makefile b/drivers/of/Makefile index b6847752d2..b69cb84b99 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_OF_GPIO) += of_gpio.o obj-$(CONFIG_OF_PCI) += of_pci.o obj-y += partition.o obj-y += of_net.o +obj-$(CONFIG_OFDEVICE) += reserved-mem.o obj-$(CONFIG_MTD) += of_mtd.o obj-$(CONFIG_OF_BAREBOX_DRIVERS) += barebox.o obj-$(CONFIG_OF_OVERLAY) += overlay.o resolver.o of_firmware.o diff --git a/drivers/of/reserved-mem.c b/drivers/of/reserved-mem.c new file mode 100644 index 0000000000..8519a7e3dd --- /dev/null +++ b/drivers/of/reserved-mem.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0-only +// SPDX-FileCopyrightText: 2021 Rouven Czerwinski <r.czerwinski@pengutronix.de>, Pengutronix + +#define pr_fmt(fmt) "reserved-memory: " fmt + +#define DEBUG + +#include <common.h> +#include <init.h> +#include <of.h> +#include <of_address.h> +#include <malloc.h> +#include <partition.h> + +static int reserved_mem_read(void) +{ + struct device_node *node, *child; + struct resource resource; + int flag; + + node = of_find_node_by_path("/reserved-memory"); + if (!node) + return 0; + + for_each_child_of_node(node, child) { + flag = OF_RESERVE_ENTRY_FLAG_NO_RESERVE; + + of_address_to_resource(child, 0, &resource); + + pr_err("Res-Mem start: 0x%08x\n", resource.start); + pr_err("Res-Mem end: 0x%08x\n", resource.end); + + if (of_find_property(child, "no-map", 0)) { + pr_debug("child %p: no-map\n", child); + flag |= OF_RESERVE_ENTRY_FLAG_XN; + } + + of_add_reserve_entry(resource.start, resource.end, flag); + } + + return 0; +} +postconsole_initcall(reserved_mem_read); -- 2.32.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
next prev parent 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 [PATCH v2 0/8] XN Support for reserved-memory areas Rouven Czerwinski 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 ` Rouven Czerwinski [this message] 2021-08-05 14:14 ` [PATCH v2 5/8] of: add reserved_mem_read initcall 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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