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Diffstat (limited to 'target/linux/brcm47xx/patches-3.14/153-MIPS-BCM47XX-Detect-more-then-128-MiB-of-RAM-HIGHMEM.patch')
-rw-r--r--target/linux/brcm47xx/patches-3.14/153-MIPS-BCM47XX-Detect-more-then-128-MiB-of-RAM-HIGHMEM.patch166
1 files changed, 0 insertions, 166 deletions
diff --git a/target/linux/brcm47xx/patches-3.14/153-MIPS-BCM47XX-Detect-more-then-128-MiB-of-RAM-HIGHMEM.patch b/target/linux/brcm47xx/patches-3.14/153-MIPS-BCM47XX-Detect-more-then-128-MiB-of-RAM-HIGHMEM.patch
deleted file mode 100644
index ee69e358ff..0000000000
--- a/target/linux/brcm47xx/patches-3.14/153-MIPS-BCM47XX-Detect-more-then-128-MiB-of-RAM-HIGHMEM.patch
+++ /dev/null
@@ -1,166 +0,0 @@
-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
-@@ -231,6 +231,9 @@ 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)