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authorAlessio Igor Bogani <alessio.bogani@elettra.eu>2016-05-30 11:47:16 +0200
committerScott Wood <oss@buserror.net>2016-07-08 20:01:27 -0500
commit97493e2e9eeddfecaca741454f97a689d8141dcf (patch)
treef025cf7b2151a8dee405eafa1d3f31f13d8cff92 /arch/powerpc/platforms/86xx
parentae9ac1d3299ab8334f0b5293ddb77e18f2a9c9e5 (diff)
powerpc/86xx: Add support for Emerson/Artesyn MVME7100
Add support for the Artesyn MVME7100 Single Board Computer. The MVME7100 is a 6U form factor VME64 computer with: - A two e600 cores Freescale MPC8641D CPU - 2 GB of DDR2 onboard memory - Four Gigabit Ethernets - Five 16550 compatible UARTs - One USB 2.0 port - Two PCI/PCI eXpress Mezzanine Card (PMC/XMC) Slots - A DS1375 Real Time Clock (RTC) - 512 KB of Non-Volatile Memory (NVRAM) - Two 64 KB EEPROMs - 128 MB NOR and 4/8 GB NAND Flash This patch is based on linux-4.7-rc1 and has been only boot tested. Limitations: This patch covers only models 171 and 173 No plans to support CPLD timers Know issues: All four PHYs work in polling mode Configuration is missing for: PCI IDSEL and PCI Interrupt definition Support is missing for: Cache and memory controllers (which are very similar to the 85xx ones but right now I don't know if we can re-use their support) Watchdog, USB, NVRAM, NOR, NAND, EEPROMs, VME, PMC/XMC and RTC Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu> Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/platforms/86xx')
-rw-r--r--arch/powerpc/platforms/86xx/Kconfig8
-rw-r--r--arch/powerpc/platforms/86xx/Makefile1
-rw-r--r--arch/powerpc/platforms/86xx/mvme7100.c121
3 files changed, 129 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index 1afd1e4a2dd2..37b166ebc729 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -61,6 +61,11 @@ config GEF_SBC610
help
This option enables support for the GE SBC610.
+config MVME7100
+ bool "Artesyn MVME7100"
+ help
+ This option enables support for the Emerson/Artesyn MVME7100 board.
+
endif
config MPC8641
@@ -69,7 +74,8 @@ config MPC8641
select FSL_PCI if PCI
select PPC_UDBG_16550
select MPIC
- default y if MPC8641_HPCN || SBC8641D || GEF_SBC610 || GEF_SBC310 || GEF_PPC9A
+ default y if MPC8641_HPCN || SBC8641D || GEF_SBC610 || GEF_SBC310 || GEF_PPC9A \
+ || MVME7100
config MPC8610
bool
diff --git a/arch/powerpc/platforms/86xx/Makefile b/arch/powerpc/platforms/86xx/Makefile
index 2d889ad7dc89..01958fedc3f2 100644
--- a/arch/powerpc/platforms/86xx/Makefile
+++ b/arch/powerpc/platforms/86xx/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_MPC8610_HPCD) += mpc8610_hpcd.o
obj-$(CONFIG_GEF_SBC610) += gef_sbc610.o
obj-$(CONFIG_GEF_SBC310) += gef_sbc310.o
obj-$(CONFIG_GEF_PPC9A) += gef_ppc9a.o
+obj-$(CONFIG_MVME7100) += mvme7100.o
diff --git a/arch/powerpc/platforms/86xx/mvme7100.c b/arch/powerpc/platforms/86xx/mvme7100.c
new file mode 100644
index 000000000000..addb41e7cd14
--- /dev/null
+++ b/arch/powerpc/platforms/86xx/mvme7100.c
@@ -0,0 +1,121 @@
+/*
+ * Board setup routines for the Emerson/Artesyn MVME7100
+ *
+ * Copyright 2016 Elettra-Sincrotrone Trieste S.C.p.A.
+ *
+ * Author: Alessio Igor Bogani <alessio.bogani@elettra.eu>
+ *
+ * Based on earlier code by:
+ *
+ * Ajit Prem <ajit.prem@emerson.com>
+ * Copyright 2008 Emerson
+ *
+ * USB host fixup is borrowed by:
+ *
+ * Martyn Welch <martyn.welch@ge.com>
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+#include "mpc86xx.h"
+
+#define MVME7100_INTERRUPT_REG_2_OFFSET 0x05
+#define MVME7100_DS1375_MASK 0x40
+#define MVME7100_MAX6649_MASK 0x20
+#define MVME7100_ABORT_MASK 0x10
+
+/*
+ * Setup the architecture
+ */
+static void __init mvme7100_setup_arch(void)
+{
+ struct device_node *bcsr_node;
+ void __iomem *mvme7100_regs = NULL;
+ u8 reg;
+
+ if (ppc_md.progress)
+ ppc_md.progress("mvme7100_setup_arch()", 0);
+
+#ifdef CONFIG_SMP
+ mpc86xx_smp_init();
+#endif
+
+ fsl_pci_assign_primary();
+
+ /* Remap BCSR registers */
+ bcsr_node = of_find_compatible_node(NULL, NULL,
+ "artesyn,mvme7100-bcsr");
+ if (bcsr_node) {
+ mvme7100_regs = of_iomap(bcsr_node, 0);
+ of_node_put(bcsr_node);
+ }
+
+ if (mvme7100_regs) {
+ /* Disable ds1375, max6649, and abort interrupts */
+ reg = readb(mvme7100_regs + MVME7100_INTERRUPT_REG_2_OFFSET);
+ reg |= MVME7100_DS1375_MASK | MVME7100_MAX6649_MASK
+ | MVME7100_ABORT_MASK;
+ writeb(reg, mvme7100_regs + MVME7100_INTERRUPT_REG_2_OFFSET);
+ } else
+ pr_warn("Unable to map board registers\n");
+
+ pr_info("MVME7100 board from Artesyn\n");
+}
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init mvme7100_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ return of_flat_dt_is_compatible(root, "artesyn,MVME7100");
+}
+
+static void mvme7100_usb_host_fixup(struct pci_dev *pdev)
+{
+ unsigned int val;
+
+ if (!machine_is(mvme7100))
+ return;
+
+ /* Ensure only ports 1 & 2 are enabled */
+ pci_read_config_dword(pdev, 0xe0, &val);
+ pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x2);
+
+ /* System clock is 48-MHz Oscillator and EHCI Enabled. */
+ pci_write_config_dword(pdev, 0xe4, 1 << 5);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+ mvme7100_usb_host_fixup);
+
+machine_arch_initcall(mvme7100, mpc86xx_common_publish_devices);
+
+define_machine(mvme7100) {
+ .name = "MVME7100",
+ .probe = mvme7100_probe,
+ .setup_arch = mvme7100_setup_arch,
+ .init_IRQ = mpc86xx_init_irq,
+ .get_irq = mpic_get_irq,
+ .restart = fsl_rstcr_restart,
+ .time_init = mpc86xx_time_init,
+ .calibrate_decr = generic_calibrate_decr,
+ .progress = udbg_progress,
+#ifdef CONFIG_PCI
+ .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
+#endif
+};