mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 22:47:56 +00:00
69d323f231
This is a backport of the patches accepted to the Linux mainline related to mvebu SoC (Armada XP and Armada 370) between Linux v3.10, and Linux v3.11. This work mainly covers: * Enabling USB storage, and PCI to mvebu_defconfig. * Add support for NOR flash. * Some PCI device tree related updates, and bus parsing. * Adding Armada XP & 370 PCI driver, and update some clock gating specifics. * Introduce Marvell EBU Device Bus driver. * Enaling USB in the armada*.dts. * Enabling, and updating the mvebu-mbus. * Some SATA and Ethernet related fixes. Signed-off-by: Seif Mazareeb <seif.mazareeb@gmail.com> CC: Luka Perkov <luka@openwrt.org> SVN-Revision: 39564
92 lines
2.7 KiB
Diff
92 lines
2.7 KiB
Diff
From 88260610ea7a2c5a164721af28f59856880221b4 Mon Sep 17 00:00:00 2001
|
|
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
|
Date: Thu, 6 Jun 2013 12:24:28 +0200
|
|
Subject: [PATCH 028/203] arm: mvebu: don't hardcode a physical address in
|
|
headsmp.S
|
|
|
|
Now that the coherency_init() function is called a bit earlier, we can
|
|
actually read the physical address of the coherency unit registers
|
|
from the Device Tree, and communicate that to the headsmp.S code,
|
|
which avoids hardcoding a physical address.
|
|
|
|
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
|
Acked-by: Arnd Bergmann <arnd@arndb.de>
|
|
Reviewed-by: Will Deacon <will.deacon@arm.com>
|
|
Acked-by: Nicolas Pitre <nico@linaro.org>
|
|
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
|
|
---
|
|
arch/arm/mach-mvebu/coherency.c | 12 ++++++++++++
|
|
arch/arm/mach-mvebu/headsmp.S | 16 ++++++++--------
|
|
2 files changed, 20 insertions(+), 8 deletions(-)
|
|
|
|
--- a/arch/arm/mach-mvebu/coherency.c
|
|
+++ b/arch/arm/mach-mvebu/coherency.c
|
|
@@ -25,8 +25,10 @@
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/platform_device.h>
|
|
#include <asm/smp_plat.h>
|
|
+#include <asm/cacheflush.h>
|
|
#include "armada-370-xp.h"
|
|
|
|
+unsigned long __cpuinitdata coherency_phys_base;
|
|
static void __iomem *coherency_base;
|
|
static void __iomem *coherency_cpu_base;
|
|
|
|
@@ -124,7 +126,17 @@ int __init coherency_init(void)
|
|
|
|
np = of_find_matching_node(NULL, of_coherency_table);
|
|
if (np) {
|
|
+ struct resource res;
|
|
pr_info("Initializing Coherency fabric\n");
|
|
+ of_address_to_resource(np, 0, &res);
|
|
+ coherency_phys_base = res.start;
|
|
+ /*
|
|
+ * Ensure secondary CPUs will see the updated value,
|
|
+ * which they read before they join the coherency
|
|
+ * fabric, and therefore before they are coherent with
|
|
+ * the boot CPU cache.
|
|
+ */
|
|
+ sync_cache_w(&coherency_phys_base);
|
|
coherency_base = of_iomap(np, 0);
|
|
coherency_cpu_base = of_iomap(np, 1);
|
|
set_cpu_coherent(cpu_logical_map(smp_processor_id()), 0);
|
|
--- a/arch/arm/mach-mvebu/headsmp.S
|
|
+++ b/arch/arm/mach-mvebu/headsmp.S
|
|
@@ -21,12 +21,6 @@
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
|
|
-/*
|
|
- * At this stage the secondary CPUs don't have acces yet to the MMU, so
|
|
- * we have to provide physical addresses
|
|
- */
|
|
-#define ARMADA_XP_CFB_BASE 0xD0020200
|
|
-
|
|
__CPUINIT
|
|
|
|
/*
|
|
@@ -35,15 +29,21 @@
|
|
* startup
|
|
*/
|
|
ENTRY(armada_xp_secondary_startup)
|
|
+ /* Get coherency fabric base physical address */
|
|
+ adr r0, 1f
|
|
+ ldr r1, [r0]
|
|
+ ldr r0, [r0, r1]
|
|
|
|
/* Read CPU id */
|
|
mrc p15, 0, r1, c0, c0, 5
|
|
and r1, r1, #0xF
|
|
|
|
/* Add CPU to coherency fabric */
|
|
- ldr r0, =ARMADA_XP_CFB_BASE
|
|
-
|
|
bl ll_set_cpu_coherent
|
|
b secondary_startup
|
|
|
|
ENDPROC(armada_xp_secondary_startup)
|
|
+
|
|
+ .align 2
|
|
+1:
|
|
+ .long coherency_phys_base - .
|