* the APB bus, also freely available in GRLIB at
* www.gaisler.com.
*
- * (C) Copyright 2007
- * Daniel Hellstrom, Gaisler Research, daniel@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__
-/* 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))
+#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 */
+};
-#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)
+/* AMBA Plug&Play AHB Masters & Slaves information locations
+ * Max devices is 64 supported by HW, however often only 16
+ * are used.
*/
-
-typedef struct {
+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;
-/* 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;
+/* Scan AMBA Bus for AHB Bridges */
+extern void ambapp_bus_init(
+ unsigned int ioarea,
+ unsigned int freq,
+ struct ambapp_bus *abus);
-/* 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
+/* 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);
-/****************************** 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);
+/* 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);
-int ambapp_ahbmsts_first(unsigned int vendor,
- unsigned int driver, ambapp_ahbdev * dev, int max_cnt);
+/* 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);
-/****************************** AHB SLAVES ******************************/
-int ambapp_ahbslv_count(unsigned int vendor, unsigned int driver);
+#ifdef CONFIG_CMD_AMBAPP
-int ambapp_ahbslv_first(unsigned int vendor,
- unsigned int driver, ambapp_ahbdev * dev);
+/* AMBA Plug&Play relocation & initialization */
+int ambapp_init_reloc(void);
-int ambapp_ahbslv_next(unsigned int vendor,
- unsigned int driver, ambapp_ahbdev * dev, int index);
+/* AMBA Plug&Play Name of Vendors and devices */
-int ambapp_ahbslvs_first(unsigned int vendor,
- unsigned int driver, ambapp_ahbdev * dev, int max_cnt);
+/* Return name of device */
+char *ambapp_device_id2str(int vendor, int id);
-/*************************** 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);
+/* Return name of vendor */
+char *ambapp_vendor_id2str(int vendor);
-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);
+/* Return description of a device */
+char *ambapp_device_id2desc(int vendor, int id);
-unsigned int ambapp_ahb_get_info(ahbctrl_pp_dev * ahb, int info);
+#endif
-/*************************** AMBA Plug&Play device register MAPS *****************/
+#endif /* defined(__ASSEMBLER__) */
-/*
- * The following defines the bits in the LEON UART Status Registers.
- */
+#define AMBA_DEFAULT_IOAREA 0xfff00000
+#define AMBA_CONF_AREA 0xff000
+#define AMBA_AHB_SLAVE_CONF_AREA 0x800
-#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 DEV_NONE 0
+#define DEV_AHB_MST 1
+#define DEV_AHB_SLV 2
+#define DEV_APB_SLV 3
-#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 */
+#define AMBA_TYPE_APBIO 0x1
+#define AMBA_TYPE_MEM 0x2
+#define AMBA_TYPE_AHBIO 0x3
-/*
- * The following defines the bits in the LEON PS/2 Ctrl Registers.
+/* 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 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;
+#define amba_vendor(x) (((x) >> 24) & 0xff)
-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 */
+#define amba_device(x) (((x) >> 12) & 0xfff)
-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;
+#define amba_irq(conf) ((conf) & 0x1f)
-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;
+#define amba_ver(conf) (((conf)>>5) & 0x1f)
-typedef struct {
- volatile unsigned int data;
- volatile unsigned int status;
- volatile unsigned int ctrl;
-} ambapp_dev_apbps2;
+#define amba_iobar_start(base, iobar) \
+ ((base) | ((((iobar) & 0xfff00000)>>12) & (((iobar) & 0xfff0)<<4)))
-typedef struct {
- unsigned int mcfg1, mcfg2, mcfg3;
-} ambapp_dev_mctrl;
+#define amba_membar_start(mbar) \
+ (((mbar) & 0xfff00000) & (((mbar) & 0xfff0) << 16))
-typedef struct {
- unsigned int sdcfg;
-} ambapp_dev_sdctrl;
+#define amba_membar_type(mbar) ((mbar) & 0xf)
-typedef struct {
- unsigned int cfg1;
- unsigned int cfg2;
- unsigned int cfg3;
-} ambapp_dev_ddr2spa;
+#define amba_membar_mask(mbar) (((mbar) >> 4) & 0xfff)
-typedef struct {
- unsigned int ctrl;
- unsigned int cfg;
-} ambapp_dev_ddrspa;
+#define amba_ahbio_adr(addr, base_ioarea) \
+ ((unsigned int)(base_ioarea) | ((addr) >> 12))
-#endif
+#define amba_apb_mask(iobar) ((~(amba_membar_mask(iobar)<<8) & 0x000fffff) + 1)
#endif
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