/*
 * (C) Copyright 2002
 * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
 *
 * 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 _ASM_IC_SC520_H_
#define _ASM_IC_SC520_H_ 1

/* Memory mapped configuration registers, MMCR */
#define SC520_REVID		0x0000	/* ElanSC520 Microcontroller Revision ID Register */
#define SC520_CPUCTL		0x0002	/* Am5x86 CPU Control Register */
#define SC520_DRCCTL		0x0010	/* SDRAM Control Register */
#define SC520_DRCTMCTL		0x0012	/* SDRAM Timing Control Register */
#define SC520_DRCCFG		0x0014	/* SDRAM Bank Configuration Register*/
#define SC520_DRCBENDADR	0x0018	/* SDRAM Bank 0-3 Ending Address Register*/
#define SC520_ECCCTL		0x0020	/* ECC Control Register */
#define SC520_ECCSTA		0x0021	/* ECC Status Register */
#define SC520_ECCCKBPOS		0x0022	/* ECC Check Bit Position Register */
#define SC520_ECCSBADD		0x0024	/* ECC Single-Bit Error Address Register */
#define SC520_DBCTL		0x0040	/* SDRAM Buffer Control Register */
#define SC520_BOOTCSCTL		0x0050	/* /BOOTCS Control Register */
#define SC520_ROMCS1CTL		0x0054	/* /ROMCS1 Control Register */
#define SC520_ROMCS2CTL		0x0056	/* /ROMCS2 Control Register */
#define SC520_HBCTL		0x0060	/* Host Bridge Control Register */
#define SC520_HBTGTIRQCTL	0x0062	/* Host Bridge Target Interrupt Control Register */
#define SC520_HBTGTIRQSTA	0x0064	/* Host Bridge Target Interrupt Status Register */
#define SC520_HBMSTIRQCTL	0x0066	/* Host Bridge Target Interrupt Control Register */
#define SC520_HBMSTIRQSTA	0x0068	/* Host Bridge Master Interrupt Status Register */
#define SC520_MSTINTADD		0x006c	/* Host Bridge Master Interrupt Address Register */
#define SC520_SYSARBCTL		0x0070	/* System Arbiter Control Register */
#define SC520_PCIARBSTA		0x0071	/* PCI Bus Arbiter Status Register */
#define SC520_SYSARBMENB	0x0072	/* System Arbiter Master Enable Register */
#define SC520_ARBPRICTL		0x0074	/* Arbiter Priority Control Register */
#define SC520_ADDDECCTL		0x0080	/* Address Decode Control Register */
#define SC520_WPVSTA		0x0082	/* Write-Protect Violation Status Register */
#define SC520_PAR0		0x0088	/* Programmable Address Region 0 Register */
#define SC520_PAR1		0x008c	/* Programmable Address Region 1 Register */
#define SC520_PAR2		0x0090	/* Programmable Address Region 2 Register */
#define SC520_PAR3		0x0094	/* Programmable Address Region 3 Register */
#define SC520_PAR4		0x0098	/* Programmable Address Region 4 Register */
#define SC520_PAR5		0x009c	/* Programmable Address Region 5 Register */
#define SC520_PAR6		0x00a0	/* Programmable Address Region 6 Register */
#define SC520_PAR7		0x00a4	/* Programmable Address Region 7 Register */
#define SC520_PAR8		0x00a8	/* Programmable Address Region 8 Register */
#define SC520_PAR9		0x00ac	/* Programmable Address Region 9 Register */
#define SC520_PAR10		0x00b0	/* Programmable Address Region 10 Register */
#define SC520_PAR11		0x00b4	/* Programmable Address Region 11 Register */
#define SC520_PAR12		0x00b8	/* Programmable Address Region 12 Register */
#define SC520_PAR13		0x00bc	/* Programmable Address Region 13 Register */
#define SC520_PAR14		0x00c0	/* Programmable Address Region 14 Register */
#define SC520_PAR15		0x00c4	/* Programmable Address Region 15 Register */
#define SC520_GPECHO		0x0c00	/* GP Echo Mode Register */
#define SC520_GPCSDW		0x0c01	/* GP Chip Select Data Width Register */
#define SC520_GPCSQUAL		0x0c02	/* GP Chip Select Qualification Register */
#define SC520_GPCSRT		0x0c08	/* GP Chip Select Recovery Time Register */
#define SC520_GPCSPW		0x0c09	/* GP Chip Select Pulse Width Register */
#define SC520_GPCSOFF		0x0c0a	/* GP Chip Select Offset Register */
#define SC520_GPRDW		0x0c0b	/* GP Read Pulse Width Register */
#define SC520_GPRDOFF		0x0c0c	/* GP Read Offset Register */
#define SC520_GPWRW		0x0c0d	/* GP Write Pulse Width Register */
#define SC520_GPWROFF		0x0c0e	/* GP Write Offset Register */
#define SC520_GPALEW		0x0c0f	/* GP ALE Pulse Width Register */
#define SC520_GPALEOFF		0x0c10	/* GP ALE Offset Register */
#define SC520_PIOPFS15_0	0x0c20	/* PIO15-PIO0 Pin Function Select */
#define SC520_PIOPFS31_16	0x0c22	/* PIO31-PIO16 Pin Function Select */
#define SC520_CSPFS		0x0c24	/* Chip Select Pin Function Select */
#define SC520_CLKSEL		0x0c26	/* Clock Select */
#define SC520_DSCTL		0x0c28	/* Drive Strength Control */
#define SC520_PIODIR15_0	0x0c2a	/* PIO15-PIO0 Direction */
#define SC520_PIODIR31_16	0x0c2c	/* PIO31-PIO16 Direction */
#define SC520_PIODATA15_0	0x0c30	/* PIO15-PIO0 Data */
#define SC520_PIODATA31_16	0x0c32	/* PIO31-PIO16 Data */
#define SC520_PIOSET15_0	0x0c34	/* PIO15-PIO0 Set */
#define SC520_PIOSET31_16	0x0c36	/* PIO31-PIO16 Set */
#define SC520_PIOCLR15_0	0x0c38	/* PIO15-PIO0 Clear */
#define SC520_PIOCLR31_16	0x0c3a	/* PIO31-PIO16 Clear */
#define SC520_SWTMRMILLI	0x0c60	/* Software Timer Millisecond Count */
#define SC520_SWTMRMICRO	0x0c62	/* Software Timer Microsecond Count */
#define SC520_SWTMRCFG		0x0c64	/* Software Timer Configuration */
#define SC520_GPTMRSTA		0x0c70	/* GP Timers Status Register */
#define SC520_GPTMR0CTL		0x0c72	/* GP Timer 0 Mode/Control Register */
#define SC520_GPTMR0CNT		0x0c74	/* GP Timer 0 Count Register */
#define SC520_GPTMR0MAXCMPA	0x0c76	/* GP Timer 0 Maxcount Compare A Register */
#define SC520_GPTMR0MAXCMPB	0x0c78	/* GP Timer 0 Maxcount Compare B Register */
#define SC520_GPTMR1CTL		0x0c7a	/* GP Timer 1 Mode/Control Register */
#define SC520_GPTMR1CNT		0x0c7c	/* GP Timer 1 Count Register */
#define SC520_GPTMR1MAXCMPA	0x0c7e	/* GP Timer 1 Maxcount Compare Register A */
#define SC520_GPTMR1MAXCMPB	0x0c80	/* GP Timer 1 Maxcount Compare B Register */
#define SC520_GPTMR2CTL		0x0c82	/* GP Timer 2 Mode/Control Register */
#define SC520_GPTMR2CNT		0x0c84	/* GP Timer 2 Count Register */
#define SC520_GPTMR2MAXCMPA	0x0c8e	/* GP Timer 2 Maxcount Compare A Register */
#define SC520_WDTMRCTL		0x0cb0	/* Watchdog Timer Control Register */
#define SC520_WDTMRCNTL		0x0cb2	/* Watchdog Timer Count Low Register */
#define SC520_WDTMRCNTH		0x0cb4	/* Watchdog Timer Count High Register */
#define SC520_UART1CTL		0x0cc0	/* UART 1 General Control Register */
#define SC520_UART1STA		0x0cc1	/* UART 1 General Status Register */
#define SC520_UART1FCRSHAD	0x0cc2	/* UART 1 FIFO Control Shadow Register */
#define SC520_UART2CTL		0x0cc4	/* UART 2 General Control Register */
#define SC520_UART2STA		0x0cc5	/* UART 2 General Status Register */
#define SC520_UART2FCRSHAD	0x0cc6	/* UART 2 FIFO Control Shadow Register */
#define SC520_SSICTL		0x0cd0	/* SSI Control */
#define SC520_SSIXMIT		0x0cd1	/* SSI Transmit */
#define SC520_SSICMD		0x0cd2	/* SSI Command */
#define SC520_SSISTA		0x0cd3	/* SSI Status */
#define SC520_SSIRCV		0x0cd4	/* SSI Receive */
#define SC520_PICICR		0x0d00	/* Interrupt Control Register */
#define SC520_MPICMODE		0x0d02	/* Master PIC Interrupt Mode Register */
#define SC520_SL1PICMODE	0x0d03	/* Slave 1 PIC Interrupt Mode Register */
#define SC520_SL2PICMODE	0x0d04	/* Slave 2 PIC Interrupt Mode Register */
#define SC520_SWINT16_1		0x0d08	/* Software Interrupt 16-1 Control Register */
#define SC520_SWINT22_17	0x0d0a	/* Software Interrupt 22-17/NMI Control Register */
#define SC520_INTPINPOL		0x0d10	/* Interrupt Pin Polarity Register */
#define SC520_PCIHOSTMAP	0x0d14	/* PCI Host Bridge Interrupt Mappin Register */
#define SC520_ECCMAP		0x0d18	/* ECC Interrupt Mapping Register */
#define SC520_GPTMR0MAP		0x0d1a	/* GP Timer 0 Interrupt Mapping Register */
#define SC520_GPTMR1MAP		0x0d1b	/* GP Timer 1 Interrupt Mapping Register */
#define SC520_GPTMR2MAP		0x0d1c	/* GP Timer 2 Interrupt Mapping Register */
#define SC520_PIT0MAP		0x0d20	/* PIT0 Interrupt Mapping Register */
#define SC520_PIT1MAP		0x0d21	/* PIT1 Interrupt Mapping Register */
#define SC520_PIT2MAP		0x0d22	/* PIT2 Interrupt Mapping Register */
#define SC520_UART1MAP		0x0d28	/* UART 1 Interrupt Mapping Register */
#define SC520_UART2MAP		0x0d29	/* UART 2 Interrupt Mapping Register */
#define SC520_PCIINTAMAP	0x0d30	/* PCI Interrupt A Mapping Register */
#define SC520_PCIINTBMAP	0x0d31	/* PCI Interrupt B Mapping Register */
#define SC520_PCIINTCMAP	0x0d32	/* PCI Interrupt C Mapping Register */
#define SC520_PCIINTDMAP	0x0d33	/* PCI Interrupt D Mapping Register */
#define SC520_DMABCINTMAP	0x0d40	/* DMA Buffer Chaining Interrupt Mapping Register */
#define SC520_SSIMAP		0x0d41	/* SSI Interrupt Mapping Register */
#define SC520_WDTMAP		0x0d42	/* Watchdog Timer Interrupt Mapping Register */
#define SC520_RTCMAP		0x0d43	/* RTC Interrupt Mapping Register */
#define SC520_WPVMAP		0x0d44	/* Write-Protect Interrupt Mapping Register */
#define SC520_ICEMAP		0x0d45	/* AMDebug JTAG RX/TX Interrupt Mapping Register */
#define SC520_FERRMAP		0x0d46	/* Floating Point Error Interrupt Mapping Register */
#define SC520_GP0IMAP		0x0d50	/* GPIRQ0 Interrupt Mapping Register */
#define SC520_GP1IMAP		0x0d51	/* GPIRQ1 Interrupt Mapping Register */
#define SC520_GP2IMAP		0x0d52	/* GPIRQ2 Interrupt Mapping Register */
#define SC520_GP3IMAP		0x0d53	/* GPIRQ3 Interrupt Mapping Register */
#define SC520_GP4IMAP		0x0d54	/* GPIRQ4 Interrupt Mapping Register */
#define SC520_GP5IMAP		0x0d55	/* GPIRQ5 Interrupt Mapping Register */
#define SC520_GP6IMAP		0x0d56	/* GPIRQ6 Interrupt Mapping Register */
#define SC520_GP7IMAP		0x0d57	/* GPIRQ7 Interrupt Mapping Register */
#define SC520_GP8IMAP		0x0d58	/* GPIRQ8 Interrupt Mapping Register */
#define SC520_GP9IMAP		0x0d59	/* GPIRQ9 Interrupt Mapping Register */
#define SC520_GP10IMAP		0x0d5a	/* GPIRQ10 Interrupt Mapping Register */
#define SC520_SYSINFO		0x0d70	/* System Board Information Register */
#define SC520_RESCFG		0x0d72	/* Reset Configuration Register */
#define SC520_RESSTA		0x0d74	/* Reset Status Register */
#define SC520_GPDMAMMIO		0x0d81	/* GP-DMA Memory-Mapped I/O Register */
#define SC520_GPDMAEXTCHMAPA	0x0d82	/* GP-DMA Resource Channel Map A */
#define SC520_GPDMAEXTCHMAPB	0x0d84	/* GP-DMA Resource Channel Map B */
#define SC520_GPDMAEXTPG0	0x0d86	/* GP-DMA Channel 0 Extended Page */
#define SC520_GPDMAEXTPG1	0x0d87	/* GP-DMA Channel 1 Extended Page */
#define SC520_GPDMAEXTPG2	0x0d88	/* GP-DMA Channel 2 Extended Page */
#define SC520_GPDMAEXTPG3	0x0d89	/* GP-DMA Channel 3 Extended Page */
#define SC520_GPDMAEXTPG5	0x0d8a	/* GP-DMA Channel 5 Extended Page */
#define SC520_GPDMAEXTPG6	0x0d8b	/* GP-DMA Channel 6 Extended Page */
#define SC520_GPDMAEXTPG7	0x0d8c	/* GP-DMA Channel 7 Extended Page */
#define SC520_GPDMAEXTTC3	0x0d90	/* GP-DMA Channel 3 Extender Transfer count */
#define SC520_GPDMAEXTTC5	0x0d91	/* GP-DMA Channel 5 Extender Transfer count */
#define SC520_GPDMAEXTTC6	0x0d92	/* GP-DMA Channel 6 Extender Transfer count */
#define SC520_GPDMAEXTTC7	0x0d93	/* GP-DMA Channel 7 Extender Transfer count */
#define SC520_GPDMABCCTL	0x0d98	/* Buffer Chaining Control */
#define SC520_GPDMABCSTA	0x0d99	/* Buffer Chaining Status */
#define SC520_GPDMABSINTENB	0x0d9a	/* Buffer Chaining Interrupt Enable */
#define SC520_GPDMABCVAL	0x0d9b	/* Buffer Chaining Valid */
#define SC520_GPDMANXTADDL3	0x0da0	/* GP-DMA Channel 3 Next Address Low */
#define SC520_GPDMANXTADDH3	0x0da2	/* GP-DMA Channel 3 Next Address High */
#define SC520_GPDMANXTADDL5	0x0da4	/* GP-DMA Channel 5 Next Address Low */
#define SC520_GPDMANXTADDH5	0x0da6	/* GP-DMA Channel 5 Next Address High */
#define SC520_GPDMANXTADDL6	0x0da8	/* GP-DMA Channel 6 Next Address Low */
#define SC520_GPDMANXTADDH6	0x0daa	/* GP-DMA Channel 6 Next Address High */
#define SC520_GPDMANXTADDL7	0x0dac	/* GP-DMA Channel 7 Next Address Low */
#define SC520_GPDMANXTADDH7	0x0dae	/* GP-DMA Channel 7 Next Address High */
#define SC520_GPDMANXTTCL3	0x0db0	/* GP-DMA Channel 3 Next Transfer Count Low */
#define SC520_GPDMANXTTCH3	0x0db2	/* GP-DMA Channel 3 Next Transfer Count High */
#define SC520_GPDMANXTTCL5	0x0db4	/* GP-DMA Channel 5 Next Transfer Count Low */
#define SC520_GPDMANXTTCH5	0x0db6	/* GP-DMA Channel 5 Next Transfer Count High */
#define SC520_GPDMANXTTCL6	0x0db8	/* GP-DMA Channel 6 Next Transfer Count Low */
#define SC520_GPDMANXTTCH6	0x0dba	/* GP-DMA Channel 6 Next Transfer Count High */
#define SC520_GPDMANXTTCL7	0x0dbc	/* GP-DMA Channel 7 Next Transfer Count Low */
#define SC520_GPDMANXTTCH7	0x0dbe	/* GP-DMA Channel 7 Next Transfer Count High */

/* MMCR Register bits (not all of them :) ) */

/* SSI Stuff */
#define CTL_CLK_SEL_4		0x00	/* Nominal Bit Rate = 8 MHz    */
#define CTL_CLK_SEL_8		0x10	/* Nominal Bit Rate = 4 MHz    */
#define CTL_CLK_SEL_16		0x20	/* Nominal Bit Rate = 2 MHz    */
#define CTL_CLK_SEL_32		0x30	/* Nominal Bit Rate = 1 MHz    */
#define CTL_CLK_SEL_64		0x40	/* Nominal Bit Rate = 512 KHz  */
#define CTL_CLK_SEL_128		0x50	/* Nominal Bit Rate = 256 KHz  */
#define CTL_CLK_SEL_256		0x60	/* Nominal Bit Rate = 128 KHz  */
#define CTL_CLK_SEL_512		0x70	/* Nominal Bit Rate = 64 KHz   */

#define TC_INT_ENB		0x08	/* Transaction Complete Interrupt Enable */
#define PHS_INV_ENB		0x04	/* SSI Inverted Phase Mode Enable */
#define CLK_INV_ENB		0x02	/* SSI Inverted Clock Mode Enable */
#define MSBF_ENB		0x01	/* SSI Most Significant Bit First Mode Enable */

#define SSICMD_CMD_SEL_XMITRCV	0x03	/* Simultaneous Transmit / Receive Transaction */
#define SSICMD_CMD_SEL_RCV	0x02	/* Receive Transaction */
#define SSICMD_CMD_SEL_XMIT	0x01	/* Transmit Transaction */
#define SSISTA_BSY		0x02	/* SSI Busy */
#define SSISTA_TC_INT		0x01	/* SSI Transaction Complete Interrupt */


/* BITS for SC520_ADDDECCTL: */
#define WPV_INT_ENB		0x80	/* Write-Protect Violation Interrupt Enable */
#define IO_HOLE_DEST_PCI	0x10	/* I/O Hole Access Destination */
#define RTC_DIS			0x04	/* RTC Disable */
#define UART2_DIS		0x02	/* UART2 Disable */
#define UART1_DIS		0x01	/* UART1 Disable */

/* bus mapping constants (used for PCI core initialization) */																																																 /* bus mapping constants */
#define SC520_REG_ADDR		0x00000cf8
#define SC520_REG_DATA		0x00000cfc


#define SC520_ISA_MEM_PHYS	0x00000000
#define SC520_ISA_MEM_BUS	0x00000000
#define SC520_ISA_MEM_SIZE	0x01000000

#define SC520_ISA_IO_PHYS	0x00000000
#define SC520_ISA_IO_BUS	0x00000000
#define SC520_ISA_IO_SIZE	0x00001000

/* PCI I/O space from 0x1000 to 0xdfff
 * (make 0xe000-0xfdff available for stuff like PCCard boot) */
#define SC520_PCI_IO_PHYS	0x00001000
#define SC520_PCI_IO_BUS	0x00001000
#define SC520_PCI_IO_SIZE	0x0000d000

/* system memory from 0x00000000 to 0x0fffffff */
#define	SC520_PCI_MEMORY_PHYS	0x00000000
#define	SC520_PCI_MEMORY_BUS	0x00000000
#define SC520_PCI_MEMORY_SIZE	0x10000000

/* PCI bus memory from 0x10000000 to 0x26ffffff
 * (make 0x27000000 - 0x27ffffff available for stuff like PCCard boot) */
#define SC520_PCI_MEM_PHYS	0x10000000
#define SC520_PCI_MEM_BUS	0x10000000
#define SC520_PCI_MEM_SIZE	0x17000000

/* 0x28000000 - 0x3fffffff is used by the flash banks */

/* 0x40000000 - 0xffffffff is not adressable by the SC520 */

/* priority numbers used for interrupt channel mappings */
#define SC520_IRQ_DISABLED 0
#define SC520_IRQ0  1
#define SC520_IRQ1  2
#define SC520_IRQ2  4  /* same as IRQ9 */
#define SC520_IRQ3  11
#define SC520_IRQ4  12
#define SC520_IRQ5  13
#define SC520_IRQ6  21
#define SC520_IRQ7  22
#define SC520_IRQ8  3
#define SC520_IRQ9  4
#define SC520_IRQ10 5
#define SC520_IRQ11 6
#define SC520_IRQ12 7
#define SC520_IRQ13 8
#define SC520_IRQ14 9
#define SC520_IRQ15 10

/* utility functions */
void write_mmcr_byte(u16 mmcr, u8 data);
void write_mmcr_word(u16 mmcr, u16 data);
void write_mmcr_long(u16 mmcr, u32 data);
u8 read_mmcr_byte(u16 mmcr);
u16 read_mmcr_word(u16 mmcr);
u32 read_mmcr_long(u16 mmcr);

void init_sc520(void);
unsigned long init_sc520_dram(void);

#endif
