SPARC: Added support for SPARC LEON3 SOC processor.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

5 files changed, 499 insertions, 1 deletions

diff --git a/include/ambapp.h b/include/ambapp.h
new file mode 100644
index 0000000000..1e49d896ce
--- /dev/null
+++ b/include/ambapp.h
@@ -0,0 +1,380 @@
+/* Interface for accessing Gaisler AMBA Plug&Play Bus.
+ * The AHB bus can be interfaced with a simpler bus -
+ * the APB bus, also freely available in GRLIB at
+ * www.gaisler.com.
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __AMBAPP_H__
+#define __AMBAPP_H__
+
+/* Default location of Plug&Play info
+ * normally 0xfffff000 for AHB masters
+ * and 0xfffff800 for AHB slaves.
+ * Normally no need to change this.
+ */
+#define LEON3_IO_AREA 0xfff00000
+#define LEON3_CONF_AREA  0xff000
+#define LEON3_AHB_SLAVE_CONF_AREA (1 << 11)
+
+/* Max devices this software will support */
+#define LEON3_AHB_MASTERS 16
+#define LEON3_AHB_SLAVES 16
+				/*#define LEON3_APB_MASTERS 1*//* Number of APB buses that has Plug&Play */
+#define LEON3_APB_SLAVES 16	/* Total number of APB slaves per APB bus */
+
+/* Vendor codes */
+#define VENDOR_GAISLER       1
+#define VENDOR_PENDER        2
+#define VENDOR_ESA           4
+#define VENDOR_ASTRIUM       6
+#define VENDOR_OPENCHIP      7
+#define VENDOR_OPENCORES     8
+#define VENDOR_CONTRIB       9
+#define VENDOR_EONIC         11
+#define VENDOR_RADIONOR      15
+#define VENDOR_GLEICHMANN    16
+#define VENDOR_MENTA         17
+#define VENDOR_SUN           19
+#define VENDOR_EMBEDDIT      234
+#define VENDOR_CAL           202
+
+/* Gaisler Research device id's */
+#define GAISLER_LEON3    0x003
+#define GAISLER_LEON3DSU 0x004
+#define GAISLER_ETHAHB   0x005
+#define GAISLER_APBMST   0x006
+#define GAISLER_AHBUART  0x007
+#define GAISLER_SRCTRL   0x008
+#define GAISLER_SDCTRL   0x009
+#define GAISLER_APBUART  0x00C
+#define GAISLER_IRQMP    0x00D
+#define GAISLER_AHBRAM   0x00E
+#define GAISLER_GPTIMER  0x011
+#define GAISLER_PCITRG   0x012
+#define GAISLER_PCISBRG  0x013
+#define GAISLER_PCIFBRG  0x014
+#define GAISLER_PCITRACE 0x015
+#define GAISLER_PCIDMA   0x016
+#define GAISLER_AHBTRACE 0x017
+#define GAISLER_ETHDSU   0x018
+#define GAISLER_PIOPORT  0x01A
+#define GAISLER_AHBJTAG  0x01c
+#define GAISLER_SPW      0x01f
+#define GAISLER_ATACTRL  0x024
+#define GAISLER_VGA      0x061
+#define GAISLER_KBD      0X060
+#define GAISLER_ETHMAC   0x01D
+#define GAISLER_DDRSPA   0x025
+#define GAISLER_EHCI     0x026
+#define GAISLER_UHCI     0x027
+#define GAISLER_SPW2     0x029
+#define GAISLER_DDR2SPA  0x02E
+#define GAISLER_AHBSTAT  0x052
+#define GAISLER_FTMCTRL  0x054
+
+#define GAISLER_L2TIME   0xffd	/* internal device: leon2 timer */
+#define GAISLER_L2C      0xffe	/* internal device: leon2compat */
+#define GAISLER_PLUGPLAY 0xfff	/* internal device: plug & play configarea */
+
+/* European Space Agency device id's */
+#define ESA_LEON2        0x2
+#define ESA_MCTRL        0xF
+
+/* Opencores device id's */
+#define OPENCORES_PCIBR  0x4
+#define OPENCORES_ETHMAC 0x5
+
+/* Vendor codes */
+
+/*
+ *
+ * Macros for manipulating Configuration registers
+ *
+ */
+
+#define amba_vendor(x) (((x) >> 24) & 0xff)
+
+#define amba_device(x) (((x) >> 12) & 0xfff)
+
+#define amba_membar_start(mbar) \
+ (((mbar) & 0xfff00000) & (((mbar) & 0xfff0) << 16))
+
+#define amba_iobar_start(base, iobar) \
+ ((base) | ((((iobar) & 0xfff00000)>>12) & (((iobar) & 0xfff0)<<4)) )
+
+#define amba_irq(conf) ((conf) & 0xf)
+
+#define amba_ver(conf) (((conf)>>5) & 0x1f)
+
+#define amba_membar_type(mbar) ((mbar) & 0xf)
+
+#define amba_membar_mask(mbar) (((mbar)>>4) & 0xfff)
+
+#define AMBA_TYPE_APBIO 0x1
+#define AMBA_TYPE_MEM   0x2
+#define AMBA_TYPE_AHBIO 0x3
+
+#define AMBA_TYPE_AHBIO_ADDR(addr) (LEON3_IO_AREA | ((addr) >> 12))
+
+#ifndef __ASSEMBLER__
+
+/*
+ *  Types and structure used for AMBA Plug & Play bus scanning
+ */
+
+/* AMBA Plug&Play AHB information layout */
+typedef struct {
+	unsigned int conf;
+	unsigned int userdef[3];
+	unsigned int bars[4];
+} ahbctrl_pp_dev;
+
+/* Prototypes for scanning AMBA Plug&Play bus for AMBA
+ *  i)   AHB Masters
+ *  ii)  AHB Slaves
+ *  iii) APB Slaves (APB MST is a AHB Slave)
+ */
+
+typedef struct {
+	unsigned char irq;
+	unsigned char ver;
+	unsigned int address;
+} ambapp_apbdev;
+
+typedef struct {
+	unsigned char irq;
+	unsigned char ver;
+	unsigned int userdef[3];
+	unsigned int address[4];
+} ambapp_ahbdev;
+
+/* AMBA Plug&Play AHB Masters & Slaves information locations
+ * Max devices is 64 supported by HW, however often only 8
+ * are used.
+ */
+typedef struct {
+	ahbctrl_pp_dev masters[64];
+	ahbctrl_pp_dev slaves[64];
+} ahbctrl_info;
+
+/* AMBA Plug&Play AHB information layout */
+typedef struct {
+	unsigned int conf;
+	unsigned int bar;
+} apbctrl_pp_dev;
+
+/* All functions return the number of found devices
+ * 0 = no devices found
+ */
+
+/****************************** APB SLAVES ******************************/
+int ambapp_apb_count(unsigned int vendor, unsigned int driver);
+
+int ambapp_apb_first(unsigned int vendor,
+		     unsigned int driver, ambapp_apbdev * dev);
+
+int ambapp_apb_next(unsigned int vendor,
+		    unsigned int driver, ambapp_apbdev * dev, int index);
+
+int ambapp_apbs_first(unsigned int vendor,
+		      unsigned int driver, ambapp_apbdev * dev, int max_cnt);
+
+/****************************** AHB MASTERS ******************************/
+int ambapp_ahbmst_count(unsigned int vendor, unsigned int driver);
+
+int ambapp_ahbmst_first(unsigned int vendor,
+			unsigned int driver, ambapp_ahbdev * dev);
+
+int ambapp_ahbmst_next(unsigned int vendor,
+		       unsigned int driver, ambapp_ahbdev * dev, int index);
+
+int ambapp_ahbmsts_first(unsigned int vendor,
+			 unsigned int driver, ambapp_ahbdev * dev, int max_cnt);
+
+/****************************** AHB SLAVES ******************************/
+int ambapp_ahbslv_count(unsigned int vendor, unsigned int driver);
+
+int ambapp_ahbslv_first(unsigned int vendor,
+			unsigned int driver, ambapp_ahbdev * dev);
+
+int ambapp_ahbslv_next(unsigned int vendor,
+		       unsigned int driver, ambapp_ahbdev * dev, int index);
+
+int ambapp_ahbslvs_first(unsigned int vendor,
+			 unsigned int driver, ambapp_ahbdev * dev, int max_cnt);
+
+/*************************** AHB/APB only regs functions *************************
+ * During start up, no memory is available we can use the simplified functions
+ * to get to the memory controller.
+ *
+ * Functions uses no stack/memory, only registers.
+ */
+unsigned int ambapp_apb_next_nomem(register unsigned int vendor,	/* Plug&Play Vendor ID */
+				   register unsigned int driver,	/* Plug&Play Device ID */
+				   register int index);
+
+ahbctrl_pp_dev *ambapp_ahb_next_nomem(register unsigned int vendor,	/* Plug&Play Vendor ID */
+				      register unsigned int driver,	/* Plug&Play Device ID */
+				      register unsigned int opts,	/* scan for AHB 1=slave, 0=masters */
+				      register int index);
+
+unsigned int ambapp_ahb_get_info(ahbctrl_pp_dev * ahb, int info);
+
+/*************************** AMBA Plug&Play device register MAPS *****************/
+
+/*
+ *  The following defines the bits in the LEON UART Status Registers.
+ */
+
+#define LEON_REG_UART_STATUS_DR   0x00000001	/* Data Ready */
+#define LEON_REG_UART_STATUS_TSE  0x00000002	/* TX Send Register Empty */
+#define LEON_REG_UART_STATUS_THE  0x00000004	/* TX Hold Register Empty */
+#define LEON_REG_UART_STATUS_BR   0x00000008	/* Break Error */
+#define LEON_REG_UART_STATUS_OE   0x00000010	/* RX Overrun Error */
+#define LEON_REG_UART_STATUS_PE   0x00000020	/* RX Parity Error */
+#define LEON_REG_UART_STATUS_FE   0x00000040	/* RX Framing Error */
+#define LEON_REG_UART_STATUS_ERR  0x00000078	/* Error Mask */
+
+/*
+ *  The following defines the bits in the LEON UART Ctrl Registers.
+ */
+
+#define LEON_REG_UART_CTRL_RE     0x00000001	/* Receiver enable */
+#define LEON_REG_UART_CTRL_TE     0x00000002	/* Transmitter enable */
+#define LEON_REG_UART_CTRL_RI     0x00000004	/* Receiver interrupt enable */
+#define LEON_REG_UART_CTRL_TI     0x00000008	/* Transmitter interrupt enable */
+#define LEON_REG_UART_CTRL_PS     0x00000010	/* Parity select */
+#define LEON_REG_UART_CTRL_PE     0x00000020	/* Parity enable */
+#define LEON_REG_UART_CTRL_FL     0x00000040	/* Flow control enable */
+#define LEON_REG_UART_CTRL_LB     0x00000080	/* Loop Back enable */
+#define LEON_REG_UART_CTRL_DBG    (1<<11)	/* Debug Bit used by GRMON */
+
+#define LEON3_GPTIMER_EN 1
+#define LEON3_GPTIMER_RL 2
+#define LEON3_GPTIMER_LD 4
+#define LEON3_GPTIMER_IRQEN 8
+
+/*
+ *  The following defines the bits in the LEON PS/2 Status Registers.
+ */
+
+#define LEON_REG_PS2_STATUS_DR   0x00000001	/* Data Ready */
+#define LEON_REG_PS2_STATUS_PE   0x00000002	/* Parity error */
+#define LEON_REG_PS2_STATUS_FE   0x00000004	/* Framing error */
+#define LEON_REG_PS2_STATUS_KI   0x00000008	/* Keyboard inhibit */
+
+/*
+ *  The following defines the bits in the LEON PS/2 Ctrl Registers.
+ */
+
+#define LEON_REG_PS2_CTRL_RE     0x00000001	/* Receiver enable */
+#define LEON_REG_PS2_CTRL_TE     0x00000002	/* Transmitter enable */
+#define LEON_REG_PS2_CTRL_RI     0x00000004	/* Keyboard receive interrupt  */
+#define LEON_REG_PS2_CTRL_TI     0x00000008	/* Keyboard transmit interrupt */
+
+typedef struct {
+	volatile unsigned int ilevel;
+	volatile unsigned int ipend;
+	volatile unsigned int iforce;
+	volatile unsigned int iclear;
+	volatile unsigned int mstatus;
+	volatile unsigned int notused[11];
+	volatile unsigned int cpu_mask[16];
+	volatile unsigned int cpu_force[16];
+} ambapp_dev_irqmp;
+
+typedef struct {
+	volatile unsigned int data;
+	volatile unsigned int status;
+	volatile unsigned int ctrl;
+	volatile unsigned int scaler;
+} ambapp_dev_apbuart;
+
+typedef struct {
+	volatile unsigned int val;
+	volatile unsigned int rld;
+	volatile unsigned int ctrl;
+	volatile unsigned int unused;
+} ambapp_dev_gptimer_element;
+
+#define LEON3_GPTIMER_CTRL_EN	0x1	/* Timer enable */
+#define LEON3_GPTIMER_CTRL_RS	0x2	/* Timer reStart  */
+#define LEON3_GPTIMER_CTRL_LD	0x4	/* Timer reLoad */
+#define LEON3_GPTIMER_CTRL_IE	0x8	/* interrupt enable */
+#define LEON3_GPTIMER_CTRL_IP	0x10	/* interrupt flag/pending */
+#define LEON3_GPTIMER_CTRL_CH	0x20	/* Chain with previous timer */
+
+typedef struct {
+	volatile unsigned int scalar;
+	volatile unsigned int scalar_reload;
+	volatile unsigned int config;
+	volatile unsigned int unused;
+	volatile ambapp_dev_gptimer_element e[8];
+} ambapp_dev_gptimer;
+
+typedef struct {
+	volatile unsigned int iodata;
+	volatile unsigned int ioout;
+	volatile unsigned int iodir;
+	volatile unsigned int irqmask;
+	volatile unsigned int irqpol;
+	volatile unsigned int irqedge;
+} ambapp_dev_ioport;
+
+typedef struct {
+	volatile unsigned int write;
+	volatile unsigned int dummy;
+	volatile unsigned int txcolor;
+	volatile unsigned int bgcolor;
+} ambapp_dev_textvga;
+
+typedef struct {
+	volatile unsigned int data;
+	volatile unsigned int status;
+	volatile unsigned int ctrl;
+} ambapp_dev_apbps2;
+
+typedef struct {
+	unsigned int mcfg1, mcfg2, mcfg3;
+} ambapp_dev_mctrl;
+
+typedef struct {
+	unsigned int sdcfg;
+} ambapp_dev_sdctrl;
+
+typedef struct {
+	unsigned int cfg1;
+	unsigned int cfg2;
+	unsigned int cfg3;
+} ambapp_dev_ddr2spa;
+
+typedef struct {
+	unsigned int ctrl;
+	unsigned int cfg;
+} ambapp_dev_ddrspa;
+
+#endif
+
+#endif
diff --git a/include/asm-sparc/arch-leon3/asi.h b/include/asm-sparc/arch-leon3/asi.h
new file mode 100644
index 0000000000..700b3caa5e
--- /dev/null
+++ b/include/asm-sparc/arch-leon3/asi.h
@@ -0,0 +1,36 @@
+/* asi.h:  Address Space Identifier values for the LEON3 sparc.
+ *
+ * Copyright (C) 2008 Daniel Hellstrom (daniel@gaisler.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef _LEON3_ASI_H
+#define _LEON3_ASI_H
+
+#define ASI_CACHEMISS		0x01	/* Force D-Cache miss on load (lda) */
+#define ASI_M_FLUSH_PROBE	0x03	/* MMU Flush/Probe */
+#define ASI_IFLUSH		0x10	/* Flush I-Cache */
+#define ASI_DFLUSH		0x11	/* Flush D-Cache */
+#define ASI_BYPASS		0x1c	/* Bypass MMU (Physical address) */
+#define ASI_MMUFLUSH		0x18	/* FLUSH TLB */
+#define ASI_M_MMUREGS		0x19	/* READ/Write MMU Registers */
+
+#endif	/* _LEON3_ASI_H */
diff --git a/include/asm-sparc/leon.h b/include/asm-sparc/leon.h
new file mode 100644
index 0000000000..6036fb5e72
--- /dev/null
+++ b/include/asm-sparc/leon.h
@@ -0,0 +1,38 @@
+/* LEON Header File select
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __ASM_LEON_H__
+#define __ASM_LEON_H__
+
+#if defined(CONFIG_LEON3)
+
+#include <asm/leon3.h>
+
+#else
+
+#error Unknown LEON processor
+
+#endif
+
+/* Common stuff */
+
+#endif
diff --git a/include/asm-sparc/leon3.h b/include/asm-sparc/leon3.h
new file mode 100644
index 0000000000..84d0e2ed27
--- /dev/null
+++ b/include/asm-sparc/leon3.h
@@ -0,0 +1,37 @@
+/* LEON3 header file. LEON3 is a free GPL SOC processor available
+ * at www.gaisler.com.
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __LEON3_H__
+#define __LEON3_H__
+
+#ifndef CONFIG_LEON3
+#error Include LEON3 header file only if LEON3 processor
+#endif
+
+/* Not much to define, most is Plug and Play and GRLIB dependent 
+ * not LEON3 dependent. See <ambapp.h> for GRLIB timers, interrupt 
+ * ctrl, memory controllers etc.
+ */
+
+
+#endif
diff --git a/include/asm-sparc/processor.h b/include/asm-sparc/processor.h
index 31b44c5463..d518389ad6 100644
--- a/include/asm-sparc/processor.h
+++ b/include/asm-sparc/processor.h
@@ -26,8 +26,15 @@
 
 #include <asm/arch/asi.h>
 
-/* Includeprocessor specific header file here */
+#ifdef CONFIG_LEON
+
+/* All LEON processors supported */
+#include <asm/leon.h>
+
+#else
+/* other processors */
 #error Unknown SPARC Processor
+#endif
 
 #ifndef __ASSEMBLY__