From: Ahmad Fatoum <a.fatoum@pengutronix.de> To: Rouven Czerwinski <r.czerwinski@pengutronix.de>, barebox@lists.infradead.org Subject: Re: [PATCH v2 5/8] of: add reserved_mem_read initcall Date: Thu, 5 Aug 2021 16:14:47 +0200 [thread overview] Message-ID: <dd763fc9-c984-9d39-8cee-ff5a736de663@pengutronix.de> (raw) In-Reply-To: <20210803094418.475609-6-r.czerwinski@pengutronix.de> On 03.08.21 11:44, Rouven Czerwinski wrote: > 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. Where do you do this OP-TEE size removal? > > 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 Left-over > + > +#include <common.h> > +#include <init.h> > +#include <of.h> > +#include <of_address.h> > +#include <malloc.h> > +#include <partition.h> Left-over? > + > +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; Why was this necessary again? > + > + 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); should be _dbg if at all. Preferably same line with child->name as prefix. > + > + 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); > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2021-08-05 14:16 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 ` [PATCH v2 5/8] of: add reserved_mem_read initcall Rouven Czerwinski 2021-08-05 14:14 ` Ahmad Fatoum [this message] 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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