diff options
Diffstat (limited to 'target/linux/x86/patches-3.14/010-rdc_cpu_ident.patch')
| -rw-r--r-- | target/linux/x86/patches-3.14/010-rdc_cpu_ident.patch | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/target/linux/x86/patches-3.14/010-rdc_cpu_ident.patch b/target/linux/x86/patches-3.14/010-rdc_cpu_ident.patch deleted file mode 100644 index 043c3a31f5..0000000000 --- a/target/linux/x86/patches-3.14/010-rdc_cpu_ident.patch +++ /dev/null @@ -1,176 +0,0 @@ ---- /dev/null -+++ b/Documentation/x86/rdc.txt -@@ -0,0 +1,69 @@ -+ -+Introduction -+============ -+ -+RDC (http://www.rdc.com.tw) have been manufacturing x86-compatible SoC -+(system-on-chips) for a number of years. They are not the fastest of -+CPUs (clock speeds ranging from 133-150MHz) but 486SX compatibility -+coupled with very low power consumption[1] and low cost make them ideal -+for embedded applications. -+ -+ -+Where to find -+============= -+ -+RDC chips show up in numerous embedded devices, but be careful since -+many of them will not run Linux 2.6 without significant expertise. -+ -+There are several variants of what the linux kernel refers to generically -+as RDC321X: R8610, R321x, S3282 and AMRISC20000. -+ -+R321x: Found in various routers, see the OpenWrt project for details, -+ http://wiki.openwrt.org/oldwiki/rdcport -+ -+R8610: Found on the RDC evaluation board -+ http://www.ivankuten.com/system-on-chip-soc/rdc-r8610/ -+ -+AMRISC20000: Found in the MGB-100 wireless hard disk -+ http://tintuc.no-ip.com/linux/tipps/mgb100/ -+ -+S3282: Found in various NAS devices, including the Bifferboard -+ http://www.bifferos.com -+ -+ -+Kernel Configuration -+==================== -+ -+Add support for this CPU with CONFIG_X86_RDC321X. Ensure that maths -+emulation is included (CONFIG_MATH_EMULATION selected) and avoid MCE -+(CONFIG_X86_MCE not selected). -+ -+ -+CPU detection -+============= -+ -+None of these chips support the cpuid instruction, so as with some -+other x86 compatible SoCs, we must check the north bridge and look -+for specific 'signature' PCI device config. -+ -+The current detection code has been tested only on the Bifferboard -+(S3282 CPU), please send bug reports or success stories with -+other devices to bifferos@yahoo.co.uk. -+ -+ -+Credits -+======= -+ -+Many thanks to RDC for providing the customer codes to allow -+detection of all known variants, without which this detection code -+would have been very hard to ascertain. -+ -+ -+References -+========== -+ -+[1] S3282 in certain NAS solutions consumes less than 1W -+ -+ -+mark@bifferos.com 2009 -+ ---- a/arch/x86/Kconfig -+++ b/arch/x86/Kconfig -@@ -478,6 +478,7 @@ config X86_RDC321X - bool "RDC R-321x SoC" - depends on X86_32 - depends on X86_EXTENDED_PLATFORM -+ select PCI - select M486 - select X86_REBOOTFIXUPS - select EMBEDDED ---- a/arch/x86/include/asm/processor.h -+++ b/arch/x86/include/asm/processor.h -@@ -137,7 +137,8 @@ struct cpuinfo_x86 { - #define X86_VENDOR_CENTAUR 5 - #define X86_VENDOR_TRANSMETA 7 - #define X86_VENDOR_NSC 8 --#define X86_VENDOR_NUM 9 -+#define X86_VENDOR_RDC 9 -+#define X86_VENDOR_NUM 10 - - #define X86_VENDOR_UNKNOWN 0xff - ---- a/arch/x86/kernel/cpu/Makefile -+++ b/arch/x86/kernel/cpu/Makefile -@@ -26,6 +26,7 @@ obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix - obj-$(CONFIG_CPU_SUP_CENTAUR) += centaur.o - obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o - obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o -+obj-$(CONFIG_X86_RDC321X) += rdc.o - - obj-$(CONFIG_PERF_EVENTS) += perf_event.o - ---- /dev/null -+++ b/arch/x86/kernel/cpu/rdc.c -@@ -0,0 +1,69 @@ -+/* -+ * See Documentation/x86/rdc.txt -+ * -+ * mark@bifferos.com -+ */ -+ -+#include <linux/pci.h> -+#include <asm/pci-direct.h> -+#include "cpu.h" -+ -+ -+static void __cpuinit rdc_identify(struct cpuinfo_x86 *c) -+{ -+ u16 vendor, device; -+ u32 customer_id; -+ -+ if (!early_pci_allowed()) -+ return; -+ -+ /* RDC CPU is SoC (system-on-chip), Northbridge is always present */ -+ vendor = read_pci_config_16(0, 0, 0, PCI_VENDOR_ID); -+ device = read_pci_config_16(0, 0, 0, PCI_DEVICE_ID); -+ -+ if (vendor != PCI_VENDOR_ID_RDC || device != PCI_DEVICE_ID_RDC_R6020) -+ return; /* not RDC */ -+ /* -+ * NB: We could go on and check other devices, e.g. r6040 NIC, but -+ * that's probably overkill -+ */ -+ -+ customer_id = read_pci_config(0, 0, 0, 0x90); -+ -+ switch (customer_id) { -+ /* id names are from RDC */ -+ case 0x00321000: -+ strcpy(c->x86_model_id, "R3210/R3211"); -+ break; -+ case 0x00321001: -+ strcpy(c->x86_model_id, "AMITRISC20000/20010"); -+ break; -+ case 0x00321002: -+ strcpy(c->x86_model_id, "R3210X/Edimax"); -+ break; -+ case 0x00321003: -+ strcpy(c->x86_model_id, "R3210/Kcodes"); -+ break; -+ case 0x00321004: /* tested */ -+ strcpy(c->x86_model_id, "S3282/CodeTek"); -+ break; -+ case 0x00321007: -+ strcpy(c->x86_model_id, "R8610"); -+ break; -+ default: -+ pr_info("RDC CPU: Unrecognised Customer ID (0x%x) please report to linux-kernel@vger.kernel.org\n", customer_id); -+ break; -+ } -+ -+ strcpy(c->x86_vendor_id, "RDC"); -+ c->x86_vendor = X86_VENDOR_RDC; -+} -+ -+static const struct cpu_dev __cpuinitconst rdc_cpu_dev = { -+ .c_vendor = "RDC", -+ .c_ident = { "RDC" }, -+ .c_identify = rdc_identify, -+ .c_x86_vendor = X86_VENDOR_RDC, -+}; -+ -+cpu_dev_register(rdc_cpu_dev); |