| /* 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 2009, 2015 |
| * Daniel Hellstrom, Cobham Gaisler, daniel@gaisler.com. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #ifndef __AMBAPP_H__ |
| #define __AMBAPP_H__ |
| |
| #include <ambapp_ids.h> |
| |
| #ifndef __ASSEMBLER__ |
| /* Structures used to access Plug&Play information directly */ |
| struct ambapp_pnp_ahb { |
| const unsigned int id; /* VENDOR, DEVICE, VER, IRQ, */ |
| const unsigned int custom[3]; |
| const unsigned int mbar[4]; /* MASK, ADDRESS, TYPE, |
| * CACHABLE/PREFETCHABLE */ |
| }; |
| |
| struct ambapp_pnp_apb { |
| const unsigned int id; /* VENDOR, DEVICE, VER, IRQ, */ |
| const unsigned int iobar; /* MASK, ADDRESS, TYPE, |
| * CACHABLE/PREFETCHABLE */ |
| }; |
| |
| /* AMBA Plug&Play AHB Masters & Slaves information locations |
| * Max devices is 64 supported by HW, however often only 16 |
| * are used. |
| */ |
| struct ambapp_pnp_info { |
| struct ambapp_pnp_ahb masters[64]; |
| struct ambapp_pnp_ahb slaves[63]; |
| const unsigned int unused[4]; |
| const unsigned int systemid[4]; |
| }; |
| |
| /* Describes a AMBA PnP bus */ |
| struct ambapp_bus { |
| int buses; /* Number of buses */ |
| unsigned int ioareas[6]; /* PnP I/O AREAs of AHB buses */ |
| unsigned int freq; /* Frequency of bus0 [Hz] */ |
| }; |
| |
| /* Processor Local AMBA bus */ |
| extern struct ambapp_bus ambapp_plb; |
| |
| /* Get Bus frequency of a certain AMBA bus */ |
| extern unsigned int ambapp_bus_freq( |
| struct ambapp_bus *abus, |
| int ahb_bus_index |
| ); |
| |
| /* AMBA PnP information of a APB Device */ |
| typedef struct { |
| unsigned int vendor; |
| unsigned int device; |
| unsigned char irq; |
| unsigned char ver; |
| unsigned int address; |
| unsigned int mask; |
| int ahb_bus_index; |
| } ambapp_apbdev; |
| |
| /* AMBA PnP information of a AHB Device */ |
| typedef struct { |
| unsigned int vendor; |
| unsigned int device; |
| unsigned char irq; |
| unsigned char ver; |
| unsigned int userdef[3]; |
| unsigned int address[4]; |
| unsigned int mask[4]; |
| int type[4]; |
| int ahb_bus_index; |
| } ambapp_ahbdev; |
| |
| /* Scan AMBA Bus for AHB Bridges */ |
| extern void ambapp_bus_init( |
| unsigned int ioarea, |
| unsigned int freq, |
| struct ambapp_bus *abus); |
| |
| /* Find APB Slave device by index using breath first search. |
| * |
| * When vendor and device are both set to zero, any device |
| * with a non-zero device ID will match the search. It may be |
| * useful when processing all devices on a AMBA bus. |
| */ |
| extern int ambapp_apb_find( |
| struct ambapp_bus *abus, |
| int vendor, |
| int device, |
| int index, |
| ambapp_apbdev *dev |
| ); |
| |
| /* Find AHB Master device by index using breath first search. |
| * |
| * When vendor and device are both set to zero, any device |
| * with a non-zero device ID will match the search. It may be |
| * useful when processing all devices on a AMBA bus. |
| */ |
| extern int ambapp_ahbmst_find( |
| struct ambapp_bus *abus, |
| int vendor, |
| int device, |
| int index, |
| ambapp_ahbdev *dev |
| ); |
| |
| /* Find AHB Slave device by index using breath first search. |
| * |
| * When vendor and device are both set to zero, any device |
| * with a non-zero device ID will match the search. It may be |
| * useful when processing all devices on a AMBA bus. |
| */ |
| extern int ambapp_ahbslv_find( |
| struct ambapp_bus *abus, |
| int vendor, |
| int device, |
| int index, |
| ambapp_ahbdev *dev |
| ); |
| |
| /* Return number of APB Slave devices of a certain ID (VENDOR:DEVICE) |
| * zero is returned if no devices was found. |
| */ |
| extern int ambapp_apb_count(struct ambapp_bus *abus, int vendor, int device); |
| |
| /* Return number of AHB Master devices of a certain ID (VENDOR:DEVICE) |
| * zero is returned if no devices was found. |
| */ |
| extern int ambapp_ahbmst_count(struct ambapp_bus *abus, int vendor, int device); |
| |
| /* Return number of AHB Slave devices of a certain ID (VENDOR:DEVICE) |
| * zero is returned if no devices was found. |
| */ |
| extern int ambapp_ahbslv_count(struct ambapp_bus *abus, int vendor, int device); |
| |
| #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); |
| |
| /* Return description of a device */ |
| char *ambapp_device_id2desc(int vendor, int id); |
| |
| #endif |
| |
| #endif /* defined(__ASSEMBLER__) */ |
| |
| #define AMBA_DEFAULT_IOAREA 0xfff00000 |
| #define AMBA_CONF_AREA 0xff000 |
| #define AMBA_AHB_SLAVE_CONF_AREA 0x800 |
| |
| #define DEV_NONE 0 |
| #define DEV_AHB_MST 1 |
| #define DEV_AHB_SLV 2 |
| #define DEV_APB_SLV 3 |
| |
| #define AMBA_TYPE_APBIO 0x1 |
| #define AMBA_TYPE_MEM 0x2 |
| #define AMBA_TYPE_AHBIO 0x3 |
| |
| /* ID layout for APB and AHB devices */ |
| #define AMBA_PNP_ID(vendor, device) (((vendor)<<24) | ((device)<<12)) |
| |
| /* APB Slave PnP layout definitions */ |
| #define AMBA_APB_ID_OFS (0*4) |
| #define AMBA_APB_IOBAR_OFS (1*4) |
| #define AMBA_APB_CONF_LENGH (2*4) |
| |
| /* AHB Master/Slave layout PnP definitions */ |
| #define AMBA_AHB_ID_OFS (0*4) |
| #define AMBA_AHB_CUSTOM0_OFS (1*4) |
| #define AMBA_AHB_CUSTOM1_OFS (2*4) |
| #define AMBA_AHB_CUSTOM2_OFS (3*4) |
| #define AMBA_AHB_MBAR0_OFS (4*4) |
| #define AMBA_AHB_MBAR1_OFS (5*4) |
| #define AMBA_AHB_MBAR2_OFS (6*4) |
| #define AMBA_AHB_MBAR3_OFS (7*4) |
| #define AMBA_AHB_CONF_LENGH (8*4) |
| |
| /* Macros for extracting information from AMBA PnP information |
| * registers. |
| */ |
| |
| #define amba_vendor(x) (((x) >> 24) & 0xff) |
| |
| #define amba_device(x) (((x) >> 12) & 0xfff) |
| |
| #define amba_irq(conf) ((conf) & 0x1f) |
| |
| #define amba_ver(conf) (((conf)>>5) & 0x1f) |
| |
| #define amba_iobar_start(base, iobar) \ |
| ((base) | ((((iobar) & 0xfff00000)>>12) & (((iobar) & 0xfff0)<<4))) |
| |
| #define amba_membar_start(mbar) \ |
| (((mbar) & 0xfff00000) & (((mbar) & 0xfff0) << 16)) |
| |
| #define amba_membar_type(mbar) ((mbar) & 0xf) |
| |
| #define amba_membar_mask(mbar) (((mbar) >> 4) & 0xfff) |
| |
| #define amba_ahbio_adr(addr, base_ioarea) \ |
| ((unsigned int)(base_ioarea) | ((addr) >> 12)) |
| |
| #define amba_apb_mask(iobar) ((~(amba_membar_mask(iobar)<<8) & 0x000fffff) + 1) |
| |
| /*************************** 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 */ |
| |
| #ifndef __ASSEMBLER__ |
| |
| 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 |