lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-Id: <1514385475-23921-3-git-send-email-aleksandar.markovic@rt-rk.com> Date: Wed, 27 Dec 2017 15:37:52 +0100 From: Aleksandar Markovic <aleksandar.markovic@...rk.com> To: linux-mips@...ux-mips.org Cc: Paul Burton <paul.burton@...s.com>, Miodrag Dinic <miodrag.dinic@...s.com>, Aleksandar Markovic <aleksandar.markovic@...s.com>, Dengcheng Zhu <dengcheng.zhu@...s.com>, Douglas Leung <douglas.leung@...s.com>, Goran Ferenc <goran.ferenc@...s.com>, James Hogan <james.hogan@...s.com>, linux-kernel@...r.kernel.org, Matt Redfearn <matt.redfearn@...s.com>, Petar Jovanovic <petar.jovanovic@...s.com>, Raghu Gandham <raghu.gandham@...s.com>, Ralf Baechle <ralf@...ux-mips.org> Subject: [PATCH v3 2/2] MIPS: CPC: Map registers using DT in mips_cpc_default_phys_base() From: Paul Burton <paul.burton@...s.com> Reading mips_cpc_base value from the DT allows each platform to define it according to its needs. This is especially convenient for MIPS_GENERIC kernel where this kind of information should be determined in runtime. Use mti,mips-cpc compatible string with just a reg property to specify the register location for your platform. Signed-off-by: Paul Burton <paul.burton@...s.com> Signed-off-by: Miodrag Dinic <miodrag.dinic@...s.com> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@...s.com> --- arch/mips/kernel/mips-cpc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/mips/kernel/mips-cpc.c b/arch/mips/kernel/mips-cpc.c index 19c88d7..fcf9af4 100644 --- a/arch/mips/kernel/mips-cpc.c +++ b/arch/mips/kernel/mips-cpc.c @@ -10,6 +10,8 @@ #include <linux/errno.h> #include <linux/percpu.h> +#include <linux/of.h> +#include <linux/of_address.h> #include <linux/spinlock.h> #include <asm/mips-cps.h> @@ -22,6 +24,17 @@ static DEFINE_PER_CPU_ALIGNED(unsigned long, cpc_core_lock_flags); phys_addr_t __weak mips_cpc_default_phys_base(void) { + struct device_node *cpc_node; + struct resource res; + int err; + + cpc_node = of_find_compatible_node(of_root, NULL, "mti,mips-cpc"); + if (cpc_node) { + err = of_address_to_resource(cpc_node, 0, &res); + if (!err) + return res.start; + } + return 0; } -- 2.7.4
Powered by blists - more mailing lists