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author | John Crispin <john@openwrt.org> | 2013-04-25 19:02:42 +0000 |
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committer | John Crispin <john@openwrt.org> | 2013-04-25 19:02:42 +0000 |
commit | deb36359236e3d815aac8c2d062eca87d9cbd639 (patch) | |
tree | ea16c522c6d68a46b73e859a6e7c0a71591fdc75 /target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch | |
parent | 831c7ea04faf74a1f30c3b03a11b3ac48bbfae48 (diff) | |
download | master-31e0f0ae-deb36359236e3d815aac8c2d062eca87d9cbd639.tar.gz master-31e0f0ae-deb36359236e3d815aac8c2d062eca87d9cbd639.tar.bz2 master-31e0f0ae-deb36359236e3d815aac8c2d062eca87d9cbd639.zip |
ramips: sync kernel patches with the mips-next tree
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 36431
Diffstat (limited to 'target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch')
-rw-r--r-- | target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch b/target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch deleted file mode 100644 index 51e233a12c..0000000000 --- a/target/linux/ramips/patches-3.8/0207-owrt-MIPS-ralink-add-support-for-runtime-memory-dete.patch +++ /dev/null @@ -1,176 +0,0 @@ -From bcd97dbdcb7bc0300397db481872252e8849307b Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Mon, 25 Mar 2013 10:50:53 +0100 -Subject: [PATCH 207/208] owrt: MIPS: ralink: add support for runtime memory - detection - -This allows us to add a device_node called "memorydetect" to the DT with -information about the memory windoe of the SoC. Based on this the memory is -detected ar runtime. - -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - arch/mips/include/asm/prom.h | 3 ++ - arch/mips/kernel/prom.c | 3 ++ - arch/mips/ralink/Makefile | 2 +- - arch/mips/ralink/memory.c | 119 ++++++++++++++++++++++++++++++++++++++++++ - 4 files changed, 126 insertions(+), 1 deletion(-) - create mode 100644 arch/mips/ralink/memory.c - ---- a/arch/mips/include/asm/prom.h -+++ b/arch/mips/include/asm/prom.h -@@ -20,6 +20,9 @@ - extern int early_init_dt_scan_memory_arch(unsigned long node, - const char *uname, int depth, void *data); - -+extern int early_init_dt_detect_memory(unsigned long node, -+ const char *uname, int depth, void *data); -+ - extern void device_tree_init(void); - - static inline unsigned long pci_address_to_pio(phys_addr_t address) ---- a/arch/mips/kernel/prom.c -+++ b/arch/mips/kernel/prom.c -@@ -88,6 +88,9 @@ void __init early_init_devtree(void *par - of_scan_flat_dt(early_init_dt_scan_memory_arch, NULL); - - /* try to load the mips machine name */ -+ of_scan_flat_dt(early_init_dt_detect_memory, NULL); -+ -+ /* try to load the mips machine name */ - of_scan_flat_dt(early_init_dt_scan_model, NULL); - } - ---- a/arch/mips/ralink/Makefile -+++ b/arch/mips/ralink/Makefile -@@ -6,7 +6,7 @@ - # Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org> - # Copyright (C) 2013 John Crispin <blogic@openwrt.org> - --obj-y := prom.o of.o reset.o clk.o irq.o pinmux.o timer.o -+obj-y := prom.o of.o reset.o clk.o irq.o pinmux.o timer.o memory.o - - obj-$(CONFIG_SOC_RT288X) += rt288x.o - obj-$(CONFIG_SOC_RT305X) += rt305x.o rt305x-usb.o ---- /dev/null -+++ b/arch/mips/ralink/memory.c -@@ -0,0 +1,119 @@ -+/* -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License version 2 as published -+ * by the Free Software Foundation. -+ * -+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> -+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org> -+ */ -+ -+#include <linux/string.h> -+#include <linux/of_fdt.h> -+#include <linux/of_platform.h> -+ -+#include <asm/bootinfo.h> -+#include <asm/addrspace.h> -+ -+#include "common.h" -+ -+#define MB (1024 * 1024) -+ -+unsigned long ramips_mem_base; -+unsigned long ramips_mem_size_min; -+unsigned long ramips_mem_size_max; -+ -+#ifdef CONFIG_SOC_RT305X -+ -+#include <asm/mach-ralink/rt305x.h> -+ -+static unsigned long rt5350_get_mem_size(void) -+{ -+ void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT305X_SYSC_BASE); -+ unsigned long ret; -+ u32 t; -+ -+ t = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG); -+ t = (t >> RT5350_SYSCFG0_DRAM_SIZE_SHIFT) & -+ RT5350_SYSCFG0_DRAM_SIZE_MASK; -+ -+ switch (t) { -+ case RT5350_SYSCFG0_DRAM_SIZE_2M: -+ ret = 2 * 1024 * 1024; -+ break; -+ case RT5350_SYSCFG0_DRAM_SIZE_8M: -+ ret = 8 * 1024 * 1024; -+ break; -+ case RT5350_SYSCFG0_DRAM_SIZE_16M: -+ ret = 16 * 1024 * 1024; -+ break; -+ case RT5350_SYSCFG0_DRAM_SIZE_32M: -+ ret = 32 * 1024 * 1024; -+ break; -+ case RT5350_SYSCFG0_DRAM_SIZE_64M: -+ ret = 64 * 1024 * 1024; -+ break; -+ default: -+ panic("rt5350: invalid DRAM size: %u", t); -+ break; -+ } -+ -+ return ret; -+} -+ -+#endif -+ -+static void __init detect_mem_size(void) -+{ -+ unsigned long size; -+ -+#ifdef CONFIG_SOC_RT305X -+ if (soc_is_rt5350()) { -+ size = rt5350_get_mem_size(); -+ } else -+#endif -+ { -+ void *base; -+ -+ base = (void *) KSEG1ADDR(detect_mem_size); -+ for (size = ramips_mem_size_min; size < ramips_mem_size_max; -+ size <<= 1 ) { -+ if (!memcmp(base, base + size, 1024)) -+ break; -+ } -+ } -+ -+ pr_info("memory detected: %uMB\n", (unsigned int) size / MB); -+ -+ add_memory_region(ramips_mem_base, size, BOOT_MEM_RAM); -+} -+ -+int __init early_init_dt_detect_memory(unsigned long node, const char *uname, -+ int depth, void *data) -+{ -+ unsigned long l; -+ __be32 *mem; -+ -+ /* We are scanning "memorydetect" nodes only */ -+ if (depth != 1 || strcmp(uname, "memorydetect") != 0) -+ return 0; -+ -+ mem = of_get_flat_dt_prop(node, "ralink,memory", &l); -+ if (mem == NULL) -+ return 0; -+ -+ if ((l / sizeof(__be32)) != 3) -+ panic("invalid memorydetect node\n"); -+ -+ ramips_mem_base = dt_mem_next_cell(dt_root_addr_cells, &mem); -+ ramips_mem_size_min = dt_mem_next_cell(dt_root_size_cells, &mem); -+ ramips_mem_size_max = dt_mem_next_cell(dt_root_size_cells, &mem); -+ -+ pr_info("memory window: 0x%llx, min: %uMB, max: %uMB\n", -+ (unsigned long long) ramips_mem_base, -+ (unsigned int) ramips_mem_size_min / MB, -+ (unsigned int) ramips_mem_size_max / MB); -+ -+ detect_mem_size(); -+ -+ return 0; -+} |