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ambapp.h
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/* 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, [email protected].
*
* 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__
#ifdef CONFIG_CMD_AMBAPP
/* AMBA Plug&Play relocation & initialization */
int ambapp_init_reloc(void);
/* AMBA Plug&Play Name of Vendors and devices */
/* Return name of device */
char *ambapp_device_id2str(int vendor, int id);
/* Return name of vendor */
char *ambapp_vendor_id2str(int vendor);
#endif
/*
* 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