/* 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__ #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