linux-kernel - Re: [PATCH 4/4 resend] [x86] : Add the RDC machine specific reboot fixup

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

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <200710181559.00957.florian.fainelli@telecomint.eu>
Date:	Thu, 18 Oct 2007 15:59:00 +0200
From:	Florian Fainelli <florian.fainelli@...ecomint.eu>
To:	linux-kernel@...r.kernel.org
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 4/4 resend] [x86] : Add the RDC machine specific reboot fixup

This one also had the attachment, sorry for the noise.

The RDC R-321x SoC needs a reboot fixup which
uses its internal hardware watchdog set to
reset the CPU on next tick.

Signed-off-by: Florian Fainelli <florian.fainelli@...ecomint.eu>
---
 arch/x86/kernel/reboot_fixups_32.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index 8b30b26..26e23fc 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -32,6 +32,19 @@ static void cs5536_warm_reset(struct pci_dev *dev)
 	udelay(50); /* shouldn't get here but be safe and spin a while */
 }
 
+static void rdc321x_reset(struct pci_dev *dev)
+{
+	unsigned i;
+	/* Voluntary reset the watchdog timer */
+	outl(0x80003840, 0xCF8);
+	/* Generate a CPU reset on next tick */
+	i = inl(0xCFC);
+	/* Use the minimum timer resolution */
+	i |= 0x1600;
+	outl(i, 0xCFC);
+	outb(1, 0x92);
+}
+
 struct device_fixup {
 	unsigned int vendor;
 	unsigned int device;
@@ -41,6 +54,7 @@ struct device_fixup {
 static struct device_fixup fixups_table[] = {
 { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, cs5536_warm_reset },
+{ PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030, rdc321x_reset },
 };
 
 /*
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/