--- /dev/null
+/* 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.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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
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