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ARCv2: [axs103] Support ARC SDP FPGA platform for HS38x cores

Browse Source 
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2015-03-09 14:33:40 +05:30
parent e0183f5230
commit 5fa2daaa8d
10 changed files with 720 additions and 12 deletions
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8
Documentation/devicetree/bindings/arc/axs103.txt Normal file
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@ -0,0 +1,8 @@
Synopsys DesignWare ARC Software Development Platforms Device Tree Bindings
---------------------------------------------------------------------------
SDP Main Board with an AXC003 FPGA Card which can contain various flavours of
HS38x cores.
Required root node properties:
- compatible = "snps,axs103", "snps,arc-sdp";

102
arch/arc/boot/dts/axc003.dtsi Normal file
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@ -0,0 +1,102 @@
/*
* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/
/*
* Device tree for AXC003 CPU card: HS38x UP configuration
*/
/ {
compatible = "snps,arc";
clock-frequency = <75000000>;
#address-cells = <1>;
#size-cells = <1>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
cpu_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
#interrupt-cells = <1>;
};
/*
* this GPIO block ORs all interrupts on CPU card (creg,..)
* to uplink only 1 IRQ to ARC core intc
*/
dw-apb-gpio@0x2000 {
compatible = "snps,dw-apb-gpio";
reg = < 0x2000 0x80 >;
#address-cells = <1>;
#size-cells = <0>;
ictl_intc: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <30>;
reg = <0>;
interrupt-controller;
#interrupt-cells = <2>;
interrupt-parent = <&cpu_intc>;
interrupts = <25>;
};
};
debug_uart: dw-apb-uart@0x5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
clock-frequency = <33333000>;
interrupt-parent = <&ictl_intc>;
interrupts = <2 4>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
arcpct0: pct {
compatible = "snps,archs-pct";
#interrupt-cells = <1>;
interrupt-parent = <&cpu_intc>;
interrupts = <20>;
};
};
/*
* This INTC is actually connected to DW APB GPIO
* which acts as a wire between MB INTC and CPU INTC.
* GPIO INTC is configured in platform init code
* and here we mimic direct connection from MB INTC to
* CPU INTC, thus we set "interrupts = <7>" instead of
* "interrupts = <12>"
*
* This intc actually resides on MB, but we move it here to
* avoid duplicating the MB dtsi file given that IRQ from
* this intc to cpu intc are different for axs101 and axs103
*/
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
interrupt-controller;
interrupt-parent = <&cpu_intc>;
interrupts = < 24 >;
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x40000000>;
device_type = "memory";
reg = <0x00000000 0x20000000>; /* 512MiB */
};
};

126
arch/arc/boot/dts/axc003_idu.dtsi Normal file
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@ -0,0 +1,126 @@
/*
* Copyright (C) 2014, 2015 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/
/*
* Device tree for AXC003 CPU card: HS38x2 (Dual Core) with IDU intc
*/
/ {
compatible = "snps,arc";
clock-frequency = <75000000>;
#address-cells = <1>;
#size-cells = <1>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
cpu_intc: archs-intc@cpu {
compatible = "snps,archs-intc";
interrupt-controller;
#interrupt-cells = <1>;
};
idu_intc: idu-interrupt-controller {
compatible = "snps,archs-idu-intc";
interrupt-controller;
interrupt-parent = <&cpu_intc>;
/*
* <hwirq distribution>
* distribution: 0=RR; 1=cpu0, 2=cpu1, 4=cpu2, 8=cpu3
*/
#interrupt-cells = <2>;
/*
* upstream irqs to core intc - downstream these are
* "COMMON" irq 0,1..
*/
interrupts = <24 25>;
};
/*
* this GPIO block ORs all interrupts on CPU card (creg,..)
* to uplink only 1 IRQ to ARC core intc
*/
dw-apb-gpio@0x2000 {
compatible = "snps,dw-apb-gpio";
reg = < 0x2000 0x80 >;
#address-cells = <1>;
#size-cells = <0>;
ictl_intc: gpio-controller@0 {
compatible = "snps,dw-apb-gpio-port";
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <30>;
reg = <0>;
interrupt-controller;
#interrupt-cells = <2>;
interrupt-parent = <&idu_intc>;
/*
* cmn irq 1 -> cpu irq 25
* Distribute to cpu0 only
*/
interrupts = <1 1>;
};
};
debug_uart: dw-apb-uart@0x5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
clock-frequency = <33333000>;
interrupt-parent = <&ictl_intc>;
interrupts = <2 4>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
arcpct0: pct {
compatible = "snps,archs-pct";
#interrupt-cells = <1>;
interrupt-parent = <&cpu_intc>;
interrupts = <20>;
};
};
/*
* This INTC is actually connected to DW APB GPIO
* which acts as a wire between MB INTC and CPU INTC.
* GPIO INTC is configured in platform init code
* and here we mimic direct connection from MB INTC to
* CPU INTC, thus we set "interrupts = <0 1>" instead of
* "interrupts = <12>"
*
* This intc actually resides on MB, but we move it here to
* avoid duplicating the MB dtsi file given that IRQ from
* this intc to cpu intc are different for axs101 and axs103
*/
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
interrupt-controller;
interrupt-parent = <&idu_intc>;
interrupts = <0 1>; /* cmn irq 0 -> cpu irq 24
distribute to cpu0 only */
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x40000000>;
device_type = "memory";
reg = <0x00000000 0x20000000>; /* 512MiB */
};
};

24
arch/arc/boot/dts/axs103.dts Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/
/*
* Device Tree for AXS103 SDP with AXS10X Main Board and
* AXC003 FPGA Card (with UP bitfile)
*/
/dts-v1/;
/include/ "axc003.dtsi"
/include/ "axs10x_mb.dtsi"
/ {
compatible = "snps,axs103", "snps,arc-sdp";
chosen {
bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=ttyS3,115200n8 debug print-fatal-signals=1";
};
};

24
arch/arc/boot/dts/axs103_idu.dts Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/
/*
* Device Tree for AXS103 SDP with AXS10X Main Board and
* AXC003 FPGA Card (with SMP bitfile)
*/
/dts-v1/;
/include/ "axc003_idu.dtsi"
/include/ "axs10x_mb.dtsi"
/ {
compatible = "snps,axs103", "snps,arc-sdp";
chosen {
bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=ttyS3,115200n8 debug print-fatal-signals=1";
};
};

117
arch/arc/configs/axs103_defconfig Normal file
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@ -0,0 +1,117 @@
CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="../../arc_initramfs_hs/"
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_MODULES=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_ARC_PLAT_AXS10X=y
CONFIG_AXS103=y
CONFIG_ISA_ARCV2=y
CONFIG_ARC_BUILTIN_DTB_NAME="axs103"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_NET_KEY=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_AXS=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_STMMAC_ETH=y
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NATIONAL_PHY=y
# CONFIG_USB_NET_DRIVERS is not set
CONFIG_INPUT_EVDEV=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_SYNAPTICS_USB=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
CONFIG_FB=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_PLATFORM=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
CONFIG_MMC_DW_IDMAC=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set
# CONFIG_FTRACE is not set

118
arch/arc/configs/axs103_smp_defconfig Normal file
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@ -0,0 +1,118 @@
CONFIG_CROSS_COMPILE="arc-linux-uclibc-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE="../../arc_initramfs_hs/"
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_PARTITION_ADVANCED=y
CONFIG_ARC_PLAT_AXS10X=y
CONFIG_AXS103=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
CONFIG_ARC_BUILTIN_DTB_NAME="axs103_idu"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_NET_KEY=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_AXS=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_STMMAC_ETH=y
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NATIONAL_PHY=y
# CONFIG_USB_NET_DRIVERS is not set
CONFIG_INPUT_EVDEV=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_SYNAPTICS_USB=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
CONFIG_FB=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_PLATFORM=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
CONFIG_MMC_DW_IDMAC=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_STRIP_ASM_SYMS=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=10
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set
# CONFIG_FTRACE is not set

2
arch/arc/kernel/devtree.c
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@ -33,7 +33,7 @@ static void __init arc_set_early_base_baud(unsigned long dt_root)
if (of_flat_dt_is_compatible(dt_root, "abilis,arc-tb10x"))
arc_base_baud = core_clk/3;
else if (of_flat_dt_is_compatible(dt_root, "snps,arc-sdp"))
arc_base_baud = 33333333; /* Fixed 33MHz clk */
arc_base_baud = 33333333; /* Fixed 33MHz clk (AXS10x) */
else
arc_base_baud = core_clk;
}

13
arch/arc/plat-axs10x/Kconfig
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@ -6,7 +6,7 @@
# published by the Free Software Foundation.
#
config ARC_PLAT_AXS10X
menuconfig ARC_PLAT_AXS10X
bool "Synopsys ARC AXS10x Software Development Platforms"
select DW_APB_ICTL
select GPIO_DWAPB
@ -23,6 +23,7 @@ config ARC_PLAT_AXS10X
if ARC_PLAT_AXS10X
config AXS101
depends on ISA_ARCOMPACT
bool "AXS101 with AXC001 CPU Card (ARC 770D/EM6/AS221)"
help
This adds support for the 770D/EM6/AS221 CPU Card. Only the ARC
@ -32,4 +33,14 @@ config AXS101
this daughtercard. Please use the axs101.dts device tree
with this configuration.
config AXS103
bool "AXS103 with AXC003 CPU Card (ARC HS38x)"
depends on ISA_ARCV2
help
This adds support for the HS38x CPU Card.
The AXS103 Platform consists of an AXS10x mainboard with
this daughtercard. Please use the axs103.dts device tree
with this configuration.
endif

198
arch/arc/plat-axs10x/axs10x.c
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@ -1,5 +1,5 @@
/*
* AXS101 Software Development Platform
* AXS101/AXS103 Software Development Platform
*
* Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
*
@ -15,8 +15,10 @@
*/
#include <linux/of_platform.h>
#include <asm/mach_desc.h>
#include <asm/clk.h>
#include <asm/io.h>
#include <asm/mach_desc.h>
#include <asm/mcip.h>
#define AXS_MB_CGU 0xE0010000
#define AXS_MB_CREG 0xE0011000
@ -29,14 +31,6 @@
#define AXC001_CREG 0xF0001000
#define AXC001_GPIO_INTC 0xF0003000
#define CREG_CPU_ADDR_770 (AXC001_CREG + 0x20)
#define CREG_CPU_ADDR_TUNN (AXC001_CREG + 0x60)
#define CREG_CPU_ADDR_770_UPD (AXC001_CREG + 0x34)
#define CREG_CPU_ADDR_TUNN_UPD (AXC001_CREG + 0x74)
#define CREG_CPU_ARC770_IRQ_MUX (AXC001_CREG + 0x114)
#define CREG_CPU_GPIO_UART_MUX (AXC001_CREG + 0x120)
static void __init axs10x_enable_gpio_intc_wire(void)
{
/*
@ -83,6 +77,22 @@ static void __init axs10x_enable_gpio_intc_wire(void)
iowrite32(1 << MB_TO_GPIO_IRQ, (void __iomem *) GPIO_INTEN);
}
static inline void __init
write_cgu_reg(uint32_t value, void __iomem *reg, void __iomem *lock_reg)
{
unsigned int loops = 128 * 1024, ctr;
iowrite32(value, reg);
ctr = loops;
while (((ioread32(lock_reg) & 1) == 1) && ctr--) /* wait for unlock */
cpu_relax();
ctr = loops;
while (((ioread32(lock_reg) & 1) == 0) && ctr--) /* wait for re-lock */
cpu_relax();
}
static void __init axs10x_print_board_ver(unsigned int creg, const char *str)
{
union ver {
@ -118,6 +128,16 @@ static void __init axs10x_early_init(void)
axs10x_print_board_ver(CREG_MB_VER, mb);
}
#ifdef CONFIG_AXS101
#define CREG_CPU_ADDR_770 (AXC001_CREG + 0x20)
#define CREG_CPU_ADDR_TUNN (AXC001_CREG + 0x60)
#define CREG_CPU_ADDR_770_UPD (AXC001_CREG + 0x34)
#define CREG_CPU_ADDR_TUNN_UPD (AXC001_CREG + 0x74)
#define CREG_CPU_ARC770_IRQ_MUX (AXC001_CREG + 0x114)
#define CREG_CPU_GPIO_UART_MUX (AXC001_CREG + 0x120)
/*
* Set up System Memory Map for ARC cpu / peripherals controllers
*
@ -287,6 +307,145 @@ static void __init axs101_early_init(void)
axs10x_early_init();
}
#endif /* CONFIG_AXS101 */
#ifdef CONFIG_AXS103
#define AXC003_CGU 0xF0000000
#define AXC003_CREG 0xF0001000
#define AXC003_MST_AXI_TUNNEL 0
#define AXC003_MST_HS38 1
#define CREG_CPU_AXI_M0_IRQ_MUX (AXC003_CREG + 0x440)
#define CREG_CPU_GPIO_UART_MUX (AXC003_CREG + 0x480)
#define CREG_CPU_TUN_IO_CTRL (AXC003_CREG + 0x494)
union pll_reg {
struct {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:17, noupd:1, bypass:1, edge:1, high:6, low:6;
#else
unsigned int low:6, high:6, edge:1, bypass:1, noupd:1, pad:17;
#endif
};
unsigned int val;
};
static unsigned int __init axs103_get_freq(void)
{
union pll_reg idiv, fbdiv, odiv;
unsigned int f = 33333333;
idiv.val = ioread32((void __iomem *)AXC003_CGU + 0x80 + 0);
fbdiv.val = ioread32((void __iomem *)AXC003_CGU + 0x80 + 4);
odiv.val = ioread32((void __iomem *)AXC003_CGU + 0x80 + 8);
if (idiv.bypass != 1)
f = f / (idiv.low + idiv.high);
if (fbdiv.bypass != 1)
f = f * (fbdiv.low + fbdiv.high);
if (odiv.bypass != 1)
f = f / (odiv.low + odiv.high);
f = (f + 500000) / 1000000; /* Rounding */
return f;
}
static inline unsigned int __init encode_div(unsigned int id, int upd)
{
union pll_reg div;
div.val = 0;
div.noupd = !upd;
div.bypass = id == 1 ? 1 : 0;
div.edge = (id%2 == 0) ? 0 : 1; /* 0 = rising */
div.low = (id%2 == 0) ? id >> 1 : (id >> 1)+1;
div.high = id >> 1;
return div.val;
}
noinline static void __init
axs103_set_freq(unsigned int id, unsigned int fd, unsigned int od)
{
write_cgu_reg(encode_div(id, 0),
(void __iomem *)AXC003_CGU + 0x80 + 0,
(void __iomem *)AXC003_CGU + 0x110);
write_cgu_reg(encode_div(fd, 0),
(void __iomem *)AXC003_CGU + 0x80 + 4,
(void __iomem *)AXC003_CGU + 0x110);
write_cgu_reg(encode_div(od, 1),
(void __iomem *)AXC003_CGU + 0x80 + 8,
(void __iomem *)AXC003_CGU + 0x110);
}
static void __init axs103_early_init(void)
{
switch (arc_get_core_freq()/1000000) {
case 33:
axs103_set_freq(1, 1, 1);
break;
case 50:
axs103_set_freq(1, 30, 20);
break;
case 75:
axs103_set_freq(2, 45, 10);
break;
case 90:
axs103_set_freq(2, 54, 10);
break;
case 100:
axs103_set_freq(1, 30, 10);
break;
case 125:
axs103_set_freq(2, 45, 6);
break;
default:
/*
* In this case, core_frequency derived from
* DT "clock-frequency" might not match with board value.
* Hence update it to match the board value.
*/
arc_set_core_freq(axs103_get_freq() * 1000000);
break;
}
pr_info("Freq is %dMHz\n", axs103_get_freq());
/* Memory maps already config in pre-bootloader */
/* set GPIO mux to UART */
iowrite32(0x01, (void __iomem *) CREG_CPU_GPIO_UART_MUX);
iowrite32((0x00100000U | 0x000C0000U | 0x00003322U),
(void __iomem *) CREG_CPU_TUN_IO_CTRL);
/* Set up the AXS_MB interrupt system.*/
iowrite32(12, (void __iomem *) (CREG_CPU_AXI_M0_IRQ_MUX
+ (AXC003_MST_HS38 << 2)));
/* connect ICTL - Main Board with GPIO line */
iowrite32(0x01, (void __iomem *) CREG_MB_IRQ_MUX);
axs10x_print_board_ver(AXC003_CREG + 4088, "AXC003 CPU Card");
axs10x_early_init();
#ifdef CONFIG_ARC_MCIP
/* No Hardware init, but filling the smp ops callbacks */
mcip_init_early_smp();
#endif
}
#endif
#ifdef CONFIG_AXS101
static const char *axs101_compat[] __initconst = {
"snps,axs101",
NULL,
@ -296,3 +455,22 @@ MACHINE_START(AXS101, "axs101")
.dt_compat = axs101_compat,
.init_early = axs101_early_init,
MACHINE_END
#endif /* CONFIG_AXS101 */
#ifdef CONFIG_AXS103
static const char *axs103_compat[] __initconst = {
"snps,axs103",
NULL,
};
MACHINE_START(AXS103, "axs103")
.dt_compat = axs103_compat,
.init_early = axs103_early_init,
#ifdef CONFIG_ARC_MCIP
.init_smp = mcip_init_smp,
#endif
MACHINE_END
#endif /* CONFIG_AXS103 */