--- /dev/null
+From c949c0bc55571209fe6742f645b1e2eb20099591 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Tue, 17 Jun 2014 16:36:50 +0200
+Subject: [PATCH 149/150] MIPS: BCM47XX: Move shared symbols to the config
+ BCM47XX
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: linux-mips@linux-mips.org
+Cc: Hauke Mehrtens <hauke@hauke-m.de>
+Patchwork: https://patchwork.linux-mips.org/patch/7100/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/Kconfig | 2 ++
+ arch/mips/bcm47xx/Kconfig | 4 ----
+ 2 files changed, 2 insertions(+), 4 deletions(-)
+
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -124,6 +124,8 @@ config BCM47XX
+ select SYS_SUPPORTS_LITTLE_ENDIAN
+ select SYS_HAS_EARLY_PRINTK
+ select EARLY_PRINTK_8250 if EARLY_PRINTK
++ select GPIOLIB
++ select LEDS_GPIO_REGISTER
+ help
+ Support for BCM47XX based boards
+
+--- a/arch/mips/bcm47xx/Kconfig
++++ b/arch/mips/bcm47xx/Kconfig
+@@ -11,8 +11,6 @@ config BCM47XX_SSB
+ select SSB_DRIVER_PCICORE if PCI
+ select SSB_PCICORE_HOSTMODE if PCI
+ select SSB_DRIVER_GPIO
+- select GPIOLIB
+- select LEDS_GPIO_REGISTER
+ default y
+ help
+ Add support for old Broadcom BCM47xx boards with Sonics Silicon Backplane support.
+@@ -29,8 +27,6 @@ config BCM47XX_BCMA
+ select BCMA_HOST_PCI if PCI
+ select BCMA_DRIVER_PCI_HOSTMODE if PCI
+ select BCMA_DRIVER_GPIO
+- select GPIOLIB
+- select LEDS_GPIO_REGISTER
+ default y
+ help
+ Add support for new Broadcom BCM47xx boards with Broadcom specific Advanced Microcontroller Bus.
--- /dev/null
+From ce01cbef8b0b71d01f8a68cba59da3198165bae6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Tue, 17 Jun 2014 16:36:51 +0200
+Subject: [PATCH 150/150] MIPS: BCM47XX: Select SYS_SUPPORTS_HIGHMEM for
+ BCM47XX_BCMA
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+It seems that bcm47xx can handle only 128 MiB of RAM directly. There
+are few devices with 256 MiB, but Broadcom's SDK uses highmem to handle
+anything above 128 MiB.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: linux-mips@linux-mips.org
+Cc: Hauke Mehrtens <hauke@hauke-m.de>
+Patchwork: https://patchwork.linux-mips.org/patch/7101/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/bcm47xx/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/mips/bcm47xx/Kconfig
++++ b/arch/mips/bcm47xx/Kconfig
+@@ -20,6 +20,7 @@ config BCM47XX_SSB
+ config BCM47XX_BCMA
+ bool "BCMA Support for Broadcom BCM47XX"
+ select SYS_HAS_CPU_MIPS32_R2
++ select SYS_SUPPORTS_HIGHMEM
+ select CPU_MIPSR2_IRQ_VI
+ select BCMA
+ select BCMA_HOST_SOC
--- /dev/null
+From d377732c8c9aac14ccb900b65678558b0fb8f0f3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 17 Jul 2014 23:26:32 +0200
+Subject: [PATCH 152/153] Revert "MIPS: Delete unused function
+ add_temporary_entry."
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This reverts commit d7a887a73dec6c387b02a966a71aac767bbd9ce6.
+
+Function add_temporary_entry is needed by bcm47xx to support highmem. We
+need to add a temporary entry to check for amount of RAM.
+The only change made in this revert was replacing (ENTER|EXIT)_CRITICAL.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: linux-mips@linux-mips.org
+Cc: Hauke Mehrtens <hauke@hauke-m.de>
+Patchwork: https://patchwork.linux-mips.org/patch/7395/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/include/asm/pgtable-32.h | 10 ++++++++
+ arch/mips/mm/tlb-r4k.c | 47 ++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 57 insertions(+)
+
+--- a/arch/mips/include/asm/pgtable-32.h
++++ b/arch/mips/include/asm/pgtable-32.h
+@@ -19,6 +19,16 @@
+ #include <asm-generic/pgtable-nopmd.h>
+
+ /*
++ * - add_temporary_entry() add a temporary TLB entry. We use TLB entries
++ * starting at the top and working down. This is for populating the
++ * TLB before trap_init() puts the TLB miss handler in place. It
++ * should be used only for entries matching the actual page tables,
++ * to prevent inconsistencies.
++ */
++extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
++ unsigned long entryhi, unsigned long pagemask);
++
++/*
+ * Basically we have the same two-level (which is the logical three level
+ * Linux page table layout folded) page tables as the i386. Some day
+ * when we have proper page coloring support we can have a 1% quicker
+--- a/arch/mips/mm/tlb-r4k.c
++++ b/arch/mips/mm/tlb-r4k.c
+@@ -411,6 +411,51 @@ int __init has_transparent_hugepage(void
+
+ #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+
++/*
++ * Used for loading TLB entries before trap_init() has started, when we
++ * don't actually want to add a wired entry which remains throughout the
++ * lifetime of the system
++ */
++
++static int temp_tlb_entry __cpuinitdata;
++
++__init int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
++ unsigned long entryhi, unsigned long pagemask)
++{
++ int ret = 0;
++ unsigned long flags;
++ unsigned long wired;
++ unsigned long old_pagemask;
++ unsigned long old_ctx;
++
++ local_irq_save(flags);
++ /* Save old context and create impossible VPN2 value */
++ old_ctx = read_c0_entryhi();
++ old_pagemask = read_c0_pagemask();
++ wired = read_c0_wired();
++ if (--temp_tlb_entry < wired) {
++ printk(KERN_WARNING
++ "No TLB space left for add_temporary_entry\n");
++ ret = -ENOSPC;
++ goto out;
++ }
++
++ write_c0_index(temp_tlb_entry);
++ write_c0_pagemask(pagemask);
++ write_c0_entryhi(entryhi);
++ write_c0_entrylo0(entrylo0);
++ write_c0_entrylo1(entrylo1);
++ mtc0_tlbw_hazard();
++ tlb_write_indexed();
++ tlbw_use_hazard();
++
++ write_c0_entryhi(old_ctx);
++ write_c0_pagemask(old_pagemask);
++out:
++ local_irq_restore(flags);
++ return ret;
++}
++
+ static int ntlb;
+ static int __init set_ntlb(char *str)
+ {
+@@ -448,6 +493,8 @@ void tlb_init(void)
+ write_c0_pagegrain(pg);
+ }
+
++ temp_tlb_entry = current_cpu_data.tlbsize - 1;
++
+ /* From this point on the ARC firmware is dead. */
+ local_flush_tlb_all();
+
--- /dev/null
+From 6ee1d93455384cef8a0426effe85da241b525b63 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 17 Jul 2014 23:26:33 +0200
+Subject: [PATCH 153/153] MIPS: BCM47XX: Detect more then 128 MiB of RAM
+ (HIGHMEM)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+So far BCM47XX can only detect amount of HIGHMEM. It still requires
+adding (registering) and well-testing before enabling by default.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
+Cc: linux-mips@linux-mips.org
+Patchwork: https://patchwork.linux-mips.org/patch/7396/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/bcm47xx/bcm47xx_private.h | 3 ++
+ arch/mips/bcm47xx/prom.c | 68 ++++++++++++++++++++++++++++++++++++-
+ arch/mips/bcm47xx/setup.c | 3 ++
+ arch/mips/include/asm/pgtable-32.h | 2 ++
+ arch/mips/mm/tlb-r4k.c | 2 +-
+ 5 files changed, 76 insertions(+), 2 deletions(-)
+
+--- a/arch/mips/bcm47xx/bcm47xx_private.h
++++ b/arch/mips/bcm47xx/bcm47xx_private.h
+@@ -3,6 +3,9 @@
+
+ #include <linux/kernel.h>
+
++/* prom.c */
++void __init bcm47xx_prom_highmem_init(void);
++
+ /* buttons.c */
+ int __init bcm47xx_buttons_register(void);
+
+--- a/arch/mips/bcm47xx/prom.c
++++ b/arch/mips/bcm47xx/prom.c
+@@ -51,6 +51,8 @@ __init void bcm47xx_set_system_type(u16
+ chip_id);
+ }
+
++static unsigned long lowmem __initdata;
++
+ static __init void prom_init_mem(void)
+ {
+ unsigned long mem;
+@@ -84,6 +86,7 @@ static __init void prom_init_mem(void)
+ if (!memcmp(prom_init, prom_init + mem, 32))
+ break;
+ }
++ lowmem = mem;
+
+ /* Ignoring the last page when ddr size is 128M. Cached
+ * accesses to last page is causing the processor to prefetch
+@@ -92,7 +95,6 @@ static __init void prom_init_mem(void)
+ */
+ if (c->cputype == CPU_74K && (mem == (128 << 20)))
+ mem -= 0x1000;
+-
+ add_memory_region(0, mem, BOOT_MEM_RAM);
+ }
+
+@@ -111,3 +113,67 @@ void __init prom_init(void)
+ void __init prom_free_prom_memory(void)
+ {
+ }
++
++#if defined(CONFIG_BCM47XX_BCMA) && defined(CONFIG_HIGHMEM)
++
++#define EXTVBASE 0xc0000000
++#define ENTRYLO(x) ((pte_val(pfn_pte((x) >> _PFN_SHIFT, PAGE_KERNEL_UNCACHED)) >> 6) | 1)
++
++#include <asm/tlbflush.h>
++
++/* Stripped version of tlb_init, with the call to build_tlb_refill_handler
++ * dropped. Calling it at this stage causes a hang.
++ */
++void __cpuinit early_tlb_init(void)
++{
++ write_c0_pagemask(PM_DEFAULT_MASK);
++ write_c0_wired(0);
++ temp_tlb_entry = current_cpu_data.tlbsize - 1;
++ local_flush_tlb_all();
++}
++
++void __init bcm47xx_prom_highmem_init(void)
++{
++ unsigned long off = (unsigned long)prom_init;
++ unsigned long extmem = 0;
++ bool highmem_region = false;
++
++ if (WARN_ON(bcm47xx_bus_type != BCM47XX_BUS_TYPE_BCMA))
++ return;
++
++ if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
++ highmem_region = true;
++
++ if (lowmem != 128 << 20 || !highmem_region)
++ return;
++
++ early_tlb_init();
++
++ /* Add one temporary TLB entry to map SDRAM Region 2.
++ * Physical Virtual
++ * 0x80000000 0xc0000000 (1st: 256MB)
++ * 0x90000000 0xd0000000 (2nd: 256MB)
++ */
++ add_temporary_entry(ENTRYLO(0x80000000),
++ ENTRYLO(0x80000000 + (256 << 20)),
++ EXTVBASE, PM_256M);
++
++ off = EXTVBASE + __pa(off);
++ for (extmem = 128 << 20; extmem < 512 << 20; extmem <<= 1) {
++ if (!memcmp(prom_init, (void *)(off + extmem), 16))
++ break;
++ }
++ extmem -= lowmem;
++
++ early_tlb_init();
++
++ if (!extmem)
++ return;
++
++ pr_warn("Found %lu MiB of extra memory, but highmem is unsupported yet!\n",
++ extmem >> 20);
++
++ /* TODO: Register extra memory */
++}
++
++#endif /* defined(CONFIG_BCM47XX_BCMA) && defined(CONFIG_HIGHMEM) */
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -218,6 +218,9 @@ void __init plat_mem_setup(void)
+ bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
+ bcm47xx_register_bcma();
+ bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
++#ifdef CONFIG_HIGHMEM
++ bcm47xx_prom_highmem_init();
++#endif
+ #endif
+ } else {
+ printk(KERN_INFO "bcm47xx: using ssb bus\n");
+--- a/arch/mips/include/asm/pgtable-32.h
++++ b/arch/mips/include/asm/pgtable-32.h
+@@ -18,6 +18,8 @@
+
+ #include <asm-generic/pgtable-nopmd.h>
+
++extern int temp_tlb_entry __cpuinitdata;
++
+ /*
+ * - add_temporary_entry() add a temporary TLB entry. We use TLB entries
+ * starting at the top and working down. This is for populating the
+--- a/arch/mips/mm/tlb-r4k.c
++++ b/arch/mips/mm/tlb-r4k.c
+@@ -417,7 +417,7 @@ int __init has_transparent_hugepage(void
+ * lifetime of the system
+ */
+
+-static int temp_tlb_entry __cpuinitdata;
++int temp_tlb_entry __cpuinitdata;
+
+ __init int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
+ unsigned long entryhi, unsigned long pagemask)
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/prom.h>
-@@ -266,6 +267,33 @@ static struct fixed_phy_status bcm47xx_f
+@@ -269,6 +270,33 @@ static struct fixed_phy_status bcm47xx_f
.duplex = DUPLEX_FULL,
};
static int __init bcm47xx_register_bus_complete(void)
{
switch (bcm47xx_bus_type) {
-@@ -285,6 +313,7 @@ static int __init bcm47xx_register_bus_c
+@@ -288,6 +316,7 @@ static int __init bcm47xx_register_bus_c
bcm47xx_workarounds();
fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
projects / openwrt / svn-archive / archive.git / commitdiff