Moved SC520 Files (fix commit 407976185e0dda2c90e89027121a1071b9c77bfb)

Fixes commit 407976185e0dda2c90e89027121a1071b9c77bfb

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>

1 files changed, 0 insertions, 584 deletions

diff --git a/cpu/i386/sc520_asm.S b/cpu/i386/sc520_asm.S
deleted file mode 100644
index 59ed2b8..0000000
--- a/cpu/i386/sc520_asm.S
+++ /dev/null
@@ -1,584 +0,0 @@
-/*
- * (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
- */
-
-/* This file is largely based on code obtned from AMD. AMD's original
- * copyright is included below
- */
-
-/*
- *  =============================================================================
- *
- *   Copyright 1999 Advanced Micro Devices, Inc.
- *
- *  This software is the property of Advanced Micro Devices, Inc  (AMD)  which
- *  specifically grants the user the right to modify, use and distribute this
- *  software provided this COPYRIGHT NOTICE is not removed or altered.  All
- *  other rights are reserved by AMD.
- *
- *  THE MATERIALS ARE PROVIDED "AS IS" WITHOUT ANY EXPRESS OR IMPLIED WARRANTY
- *  OF ANY KIND INCLUDING WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT OF
- *  THIRD-PARTY INTELLECTUAL PROPERTY, OR FITNESS FOR ANY PARTICULAR PURPOSE.
- *  IN NO EVENT SHALL AMD OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER
- *  (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS
- *  INTERRUPTION, LOSS OF INFORMAITON) ARISING OUT OF THE USE OF OR INABILITY
- *  TO USE THE MATERIALS, EVEN IF AMD HAS BEEN ADVISED OF THE POSSIBILITY OF
- *  SUCH DAMAGES.  BECAUSE SOME JURSIDICTIONS PROHIBIT THE EXCLUSION OR
- *  LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE
- *  LIMITATION MAY NOT APPLY TO YOU.
- *
- *  AMD does not assume any responsibility for any errors that may appear in
- *  the Materials nor any responsibility to support or update the Materials.
- *  AMD retains the right to make changes to its test specifications at any
- *  time, without notice.
- *
- *  So that all may benefit from your experience, please report  any  problems
- *  or suggestions about this software back to AMD.  Please include your name,
- *  company,  telephone number,  AMD product requiring support and question or
- *  problem encountered.
- *
- *  Advanced Micro Devices, Inc.         Worldwide support and contact
- *  Embedded Processor Division            information available at:
- *  Systems Engineering                       epd.support@amd.com
- *  5204 E. Ben White Blvd.                          -or-
- *  Austin, TX 78741                http://www.amd.com/html/support/techsup.html
- *  ============================================================================
- */
-
-
-/*******************************************************************************
- *	 AUTHOR      : Buddy Fey - Original.
- *******************************************************************************
- */
-
-
-/*******************************************************************************
- *       FUNCTIONAL DESCRIPTION:
- * This routine is called to autodetect the geometry of the DRAM.
- *
- * This routine is called to determine the number of column bits for the DRAM
- * devices in this external bank. This routine assumes that the external bank
- * has been configured for an 11-bit column and for 4 internal banks. This gives
- * us the maximum address reach in memory. By writing a test value to the max
- * address and locating where it aliases to, we can determine the number of valid
- * column bits.
- *
- * This routine is called to determine the number of internal banks each DRAM
- * device has. The external bank (under test) is configured for maximum reach
- * with 11-bit columns and 4 internal banks. This routine will write to a max
- * address (BA1 and BA0 = 1) and then read from an address with BA1=0 to see if
- * that column is a "don't care". If BA1 does not affect write/read of data,
- * then this device has only 2 internal banks.
- *
- * This routine is called to determine the ending address for this external
- * bank of SDRAM. We write to a max address with a data value and then disable
- * row address bits looking for "don't care" locations. Each "don't care" bit
- * represents a dividing of the maximum density (128M) by 2. By dividing the
- * maximum of 32 4M chunks in an external bank down by all the "don't care" bits
- * determined during sizing, we set the proper density.
- *
- * WARNINGS.
- * bp must be preserved because it is used for return linkage.
- *
- * EXIT
- * nothing returned - but the memory subsystem is enabled
- *******************************************************************************
- */
-
-#include <config.h>
-#ifdef CONFIG_SC520
-
-.section .text
-.equ            DRCCTL,     0x0fffef010   /* DRAM control register */
-.equ            DRCTMCTL,   0x0fffef012   /* DRAM timing control register */
-.equ            DRCCFG,     0x0fffef014   /* DRAM bank configuration register */
-.equ            DRCBENDADR, 0x0fffef018   /* DRAM bank ending address register */
-.equ            ECCCTL,     0x0fffef020   /* DRAM ECC control register */
-.equ            ECCINT,     0x0fffefd18   /* DRAM ECC nmi-INT mapping */
-.equ            DBCTL,      0x0fffef040   /* DRAM buffer control register */
-
-.equ            CACHELINESZ, 0x00000010   /* size of our cache line (read buffer) */
-.equ            COL11_ADR,  0x0e001e00    /* 11 col addrs */
-.equ            COL10_ADR,  0x0e000e00    /* 10 col addrs */
-.equ            COL09_ADR,  0x0e000600    /*  9 col addrs */
-.equ            COL08_ADR,  0x0e000200    /*  8 col addrs */
-.equ            ROW14_ADR,  0x0f000000    /* 14 row addrs */
-.equ            ROW13_ADR,  0x07000000    /* 13 row addrs */
-.equ            ROW12_ADR,  0x03000000    /* 12 row addrs */
-.equ            ROW11_ADR,  0x01000000    /* 11 row addrs/also bank switch */
-.equ            ROW10_ADR,  0x00000000    /* 10 row addrs/also bank switch */
-.equ            COL11_DATA, 0x0b0b0b0b    /* 11 col addrs */
-.equ            COL10_DATA, 0x0a0a0a0a    /* 10 col data */
-.equ            COL09_DATA, 0x09090909    /*  9 col data */
-.equ            COL08_DATA, 0x08080808    /*  8 col data */
-.equ            ROW14_DATA, 0x3f3f3f3f    /* 14 row data (MASK) */
-.equ            ROW13_DATA, 0x1f1f1f1f    /* 13 row data (MASK) */
-.equ            ROW12_DATA, 0x0f0f0f0f    /* 12 row data (MASK) */
-.equ            ROW11_DATA, 0x07070707    /* 11 row data/also bank switch (MASK) */
-.equ            ROW10_DATA, 0xaaaaaaaa    /* 10 row data/also bank switch (MASK) */
-
-
- /*
-  * initialize dram controller registers
-  */
-.globl mem_init
-mem_init:
-	xorw    %ax,%ax
-	movl    $DBCTL, %edi
-	movb     %al, (%edi)             /* disable write buffer */
-
-	movl    $ECCCTL, %edi
-	movb     %al, (%edi)             /* disable ECC */
-
-	movl    $DRCTMCTL, %edi
-	movb    $0x1E,%al                /* Set SDRAM timing for slowest */
-	movb     %al, (%edi)
-
- /*
-  * setup loop to do 4 external banks starting with bank 3
-  */
-	movl    $0xff000000,%eax         /* enable last bank and setup */
-	movl    $DRCBENDADR, %edi        /* ending address register */
-	movl     %eax, (%edi)
-
-	movl    $DRCCFG, %edi            /* setup */
-	movw    $0xbbbb,%ax              /* dram config register for  */
-	movw    %ax, (%edi)
-
- /*
-  * issue a NOP to all DRAMs
-  */
-	movl    $DRCCTL, %edi            /* setup DRAM control register with */
-	movb    $0x1,%al                 /* Disable refresh,disable write buffer */
-	movb     %al, (%edi)
-	movl    $CACHELINESZ, %esi       /* just a dummy address to write for */
-	movw     %ax, (%esi)
- /*
-  * delay for 100 usec? 200?
-  * ******this is a cludge for now *************
-  */
-	movw    $100,%cx
-sizdelay:
-	loop    sizdelay                 /* we need 100 usec here */
- /***********************************************/
-
- /*
-  * issue all banks precharge
-  */
-	movb    $0x2,%al                 /* All banks precharge */
-	movb     %al, (%edi)
-	movw     %ax, (%esi)
-
- /*
-  * issue 2 auto refreshes to all banks
-  */
-	movb    $0x4,%al                 /* Auto refresh cmd */
-	movb     %al, (%edi)
-	movw    $2,%cx
-refresh1:
-	movw     %ax, (%esi)
-	loop    refresh1
-
- /*
-  * issue LOAD MODE REGISTER command
-  */
-	movb    $0x3,%al                 /* Load mode register cmd */
-	movb     %al, (%edi)
-	movw     %ax, (%esi)
-
- /*
-  * issue 8 more auto refreshes to all banks
-  */
-	movb    $0x4,%al                 /* Auto refresh cmd */
-	movb     %al, (%edi)
-	movw    $8,%cx
-refresh2:
-	movw     %ax, (%esi)
-	loop    refresh2
-
- /*
-  * set control register to NORMAL mode
-  */
-	movb    $0x0,%al                 /* Normal mode value */
-	movb     %al, (%edi)
-
- /*
-  * size dram starting with external bank 3 moving to external bank 0
-  */
-	movl    $0x3,%ecx                /* start with external bank 3 */
-
-nextbank:
-
- /*
-  * write col 11 wrap adr
-  */
-	movl    $COL11_ADR, %esi         /* set address to max col (11) wrap addr */
-	movl    $COL11_DATA, %eax        /* pattern for max supported columns(11) */
-	movl    %eax, (%esi)             /* write max col pattern at max col adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write col 10 wrap adr
-  */
-
-	movl    $COL10_ADR, %esi         /* set address to 10 col wrap address */
-	movl    $COL10_DATA, %eax        /* pattern for 10 col wrap */
-	movl    %eax, (%esi)             /* write 10 col pattern @ 10 col wrap adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write col 9 wrap adr
-  */
-	movl    $COL09_ADR, %esi         /* set address to 9 col wrap address */
-	movl    $COL09_DATA, %eax        /* pattern for 9 col wrap */
-	movl    %eax, (%esi)             /* write 9 col pattern @ 9 col wrap adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write col 8 wrap adr
-  */
-	movl    $COL08_ADR, %esi         /* set address to min(8) col wrap address */
-	movl    $COL08_DATA, %eax        /* pattern for min (8) col wrap */
-	movl    %eax, (%esi)             /* write min col pattern @ min col adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write row 14 wrap adr
-  */
-	movl    $ROW14_ADR, %esi         /* set address to max row (14) wrap addr */
-	movl    $ROW14_DATA, %eax        /* pattern for max supported rows(14) */
-	movl    %eax, (%esi)             /* write max row pattern at max row adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write row 13 wrap adr
-  */
-	movl    $ROW13_ADR, %esi         /* set address to 13 row wrap address */
-	movl    $ROW13_DATA, %eax        /* pattern for 13 row wrap */
-	movl    %eax, (%esi)             /* write 13 row pattern @ 13 row wrap adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write row 12 wrap adr
-  */
-	movl    $ROW12_ADR, %esi         /* set address to 12 row wrap address */
-	movl    $ROW12_DATA, %eax        /* pattern for 12 row wrap */
-	movl    %eax, (%esi)             /* write 12 row pattern @ 12 row wrap adr */
-	movl    (%esi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write row 11 wrap adr
-  */
-	movl    $ROW11_ADR, %edi         /* set address to 11 row wrap address */
-	movl    $ROW11_DATA, %eax        /* pattern for 11 row wrap */
-	movl    %eax, (%edi)             /* write 11 row pattern @ 11 row wrap adr */
-	movl    (%edi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * write row 10 wrap adr --- this write is really to determine number of banks
-  */
-	movl    $ROW10_ADR, %edi         /* set address to 10 row wrap address */
-	movl    $ROW10_DATA, %eax        /* pattern for 10 row wrap (AA) */
-	movl    %eax, (%edi)             /* write 10 row pattern @ 10 row wrap adr */
-	movl    (%edi), %ebx             /* optional read */
-	cmpl    %ebx,%eax                /* to verify write */
-	jnz     bad_ram                  /* this ram is bad */
- /*
-  * read data @ row 12 wrap adr to determine  * banks,
-  * and read data @ row 14 wrap adr to determine  * rows.
-  * if data @ row 12 wrap adr is not AA, 11 or 12 we have bad RAM.
-  * if data @ row 12 wrap == AA, we only have 2 banks, NOT 4
-  * if data @ row 12 wrap == 11 or 12, we have 4 banks,
-  */
-	xorw    %di,%di                  /* value for 2 banks in DI */
-	movl    (%esi), %ebx             /* read from 12 row wrap to check banks
-					  * (esi is setup from the write to row 12 wrap) */
-	cmpl    %ebx,%eax                /* check for AA pattern  (eax holds the aa pattern) */
-	jz      only2                    /* if pattern == AA, we only have 2 banks */
-
-	/* 4 banks */
-
-	movw    $8,%di                   /* value for 4 banks in DI (BNK_CNT bit) */
-	cmpl    $ROW11_DATA, %ebx        /* only other legitimate values are 11 */
-	jz      only2
-	cmpl    $ROW12_DATA, %ebx        /* and 12 */
-	jnz     bad_ram                  /* its bad if not 11 or 12! */
-
-	/* fall through */
-only2:
- /*
-  * validate row mask
-  */
-	movl    $ROW14_ADR, %esi         /* set address back to max row wrap addr */
-	movl    (%esi), %eax             /* read actual number of rows @ row14 adr */
-
-	cmpl    $ROW11_DATA, %eax        /* row must be greater than 11 pattern */
-	jb      bad_ram
-
-	cmpl    $ROW14_DATA, %eax        /* and row must be less than 14 pattern */
-	ja      bad_ram
-
-	cmpb    %ah,%al                  /* verify all 4 bytes of dword same */
-	jnz     bad_ram
-	movl    %eax,%ebx
-	shrl    $16,%ebx
-	cmpw    %bx,%ax
-	jnz     bad_ram
- /*
-  * read col 11 wrap adr for real column data value
-  */
-	movl    $COL11_ADR, %esi         /* set address to max col (11) wrap addr */
-	movl    (%esi), %eax             /* read real col number at max col adr */
- /*
-  * validate column data
-  */
-	cmpl    $COL08_DATA, %eax        /* col must be greater than 8 pattern */
-	jb      bad_ram
-
-	cmpl    $COL11_DATA, %eax        /* and row must be less than 11 pattern */
-	ja      bad_ram
-
-	subl    $COL08_DATA, %eax        /* normalize column data to zero */
-	jc      bad_ram
-	cmpb    %ah,%al                  /* verify all 4 bytes of dword equal */
-	jnz     bad_ram
-	movl    %eax,%edx
-	shrl    $16,%edx
-	cmpw    %dx,%ax
-	jnz     bad_ram
- /*
-  * merge bank and col data together
-  */
-	addw    %di,%dx                  /* merge of bank and col info in dl */
- /*
-  * fix ending addr mask based upon col info
-  */
-	movb    $3,%al
-	subb    %dh,%al                  /* dh contains the overflow from the bank/col merge  */
-	movb    %bl,%dh                  /* bl contains the row mask (aa, 07, 0f, 1f or 3f) */
-	xchgw   %cx,%ax                  /* cx = ax = 3 or 2 depending on 2 or 4 bank device */
-	shrb    %cl,%dh	                 /*  */
-	incb    %dh                      /* ending addr is 1 greater than real end */
-	xchgw   %cx,%ax                  /* cx is bank number again */
- /*
-  * issue all banks precharge
-  */
-bad_reint:
-	movl    $DRCCTL, %esi            /* setup DRAM control register with */
-	movb    $0x2,%al                 /* All banks precharge */
-	movb     %al, (%esi)
-	movl    $CACHELINESZ, %esi       /* address to init read buffer */
-	movw     %ax, (%esi)
-
- /*
-  * update ENDING ADDRESS REGISTER
-  */
-	movl    $DRCBENDADR, %edi        /* DRAM ending address register */
-	movl    %ecx,%ebx
-	addl	%ebx, %edi
-	movb    %dh, (%edi)
- /*
-  * update CONFIG REGISTER
-  */
-	xorb    %dh,%dh
-	movw    $0x00f,%bx
-	movw    %cx,%ax
-	shlw    $2,%ax
-	xchgw   %cx,%ax
-	shlw    %cl,%dx
-	shlw    %cl,%bx
-	notw    %bx
-	xchgw   %cx,%ax
-	movl    $DRCCFG, %edi
-	mov     (%edi), %ax
-	andw    %bx,%ax
-	orw     %dx,%ax
-	movw    %ax, (%edi)
-	jcxz    cleanup
-
-	decw    %cx
-	movl    %ecx,%ebx
-	movl    $DRCBENDADR, %edi        /* DRAM ending address register */
-	movb    $0xff,%al
-	addl	%ebx, %edi
-	movb    %al, (%edi)
- /*
-  * set control register to NORMAL mode
-  */
-	movl    $DRCCTL, %esi            /* setup DRAM control register with */
-	movb    $0x0,%al                 /* Normal mode value */
-	movb    %al, (%esi)
-	movl    $CACHELINESZ, %esi       /* address to init read buffer */
-	movw    %ax, (%esi)
-	jmp     nextbank
-
-cleanup:
-	movl    $DRCBENDADR, %edi        /* DRAM ending address register  */
-	movw    $4,%cx
-	xorw    %ax,%ax
-cleanuplp:
-	movb   (%edi), %al
-	orb     %al,%al
-	jz      emptybank
-
-	addb    %ah,%al
-	jns     nottoomuch
-
-	movb    $0x7f,%al
-nottoomuch:
-	movb    %al,%ah
-	orb     $0x80,%al
-	movb    %al, (%edi)
-emptybank:
-	incl    %edi
-	loop    cleanuplp
-
-#if defined CONFIG_SYS_SDRAM_DRCTMCTL
-	/* just have your hardware desinger _GIVE_ you what you need here! */
-	movl    $DRCTMCTL, %edi
-	movb    $CONFIG_SYS_SDRAM_DRCTMCTL,%al
-	movb    (%edi), %al
-#else
-#if defined(CONFIG_SYS_SDRAM_CAS_LATENCY_2T) || defined(CONFIG_SYS_SDRAM_CAS_LATENCY_3T)
-	/* set the CAS latency now since it is hard to do
-	 * when we run from the RAM */
-	movl    $DRCTMCTL, %edi          /* DRAM timing register */
-	movb    (%edi), %al
-#ifdef CONFIG_SYS_SDRAM_CAS_LATENCY_2T
-	andb    $0xef, %al
-#endif
-#ifdef CONFIG_SYS_SDRAM_CAS_LATENCY_3T
-	orb     $0x10, %al
-#endif
-	movb    %al, (%edi)
-#endif
-#endif
-	movl    $DRCCTL, %edi            /* DRAM Control register */
-	movb    $0x3,%al                 /* Load mode register cmd */
-	movb     %al, (%edi)
-	movw     %ax, (%esi)
-
-
-	movl    $DRCCTL, %edi            /* DRAM Control register */
-	movb    $0x18,%al                /*  Enable refresh and NORMAL mode */
-	movb    %al, (%edi)
-
-	jmp     dram_done
-
-bad_ram:
-	xorl    %edx,%edx
-	xorl    %edi,%edi
-	jmp     bad_reint
-
-dram_done:
-
-	/* readback DRCBENDADR and return the number
-	 * of available ram bytes in %eax */
-
-	movl    $DRCBENDADR, %edi        /* DRAM ending address register  */
-
-	movl	(%edi), %eax
-	movl	%eax, %ecx
-	andl	$0x80000000, %ecx
-	jz	bank2
-	andl	$0x7f000000, %eax
-	shrl	$2, %eax
-	movl	%eax, %ebx
-
-bank2:	movl	(%edi), %eax
-	movl	%eax, %ecx
-	andl	$0x00800000, %ecx
-	jz	bank1
-	andl	$0x007f0000, %eax
-	shll	$6, %eax
-	movl	%eax, %ebx
-
-bank1:	movl	(%edi), %eax
-	movl	%eax, %ecx
-	andl	$0x00008000, %ecx
-	jz	bank0
-	andl	$0x00007f00, %eax
-	shll	$14, %eax
-	movl	%eax, %ebx
-
-bank0:	movl	(%edi), %eax
-	movl	%eax, %ecx
-	andl	$0x00000080, %ecx
-	jz	done
-	andl	$0x0000007f, %eax
-	shll	$22, %eax
-	movl	%eax, %ebx
-
-
-done:
-	movl	%ebx, %eax
-
-#if CONFIG_SYS_SDRAM_ECC_ENABLE
-	/* A nominal memory test: just a byte at each address line */
-	movl    %eax, %ecx
-	shrl    $0x1, %ecx
-	movl	$0x1, %edi
-memtest0:
-	movb	$0xa5, (%edi)
-	cmpb    $0xa5, (%edi)
-	jne	out
-	shrl	$1, %ecx
-	andl	%ecx,%ecx
-	jz	set_ecc
-	shll	$1, %edi
-	jmp	memtest0
-
-set_ecc:
-	/* clear all ram with a memset */
-	movl	%eax, %ecx
-	xorl	%esi, %esi
-	xorl	%edi, %edi
-	xorl	%eax, %eax
-	shrl	$2, %ecx
-	cld
-	rep	stosl
-			/* enable read, write buffers */
-	movb    $0x11, %al
-	movl    $DBCTL, %edi
-	movb    %al, (%edi)
-			/* enable NMI mapping for ECC */
-	movl    $ECCINT, %edi
-	mov	$0x10, %al
-	movb    %al, (%edi)
-			/* Turn on ECC */
-	movl    $ECCCTL, %edi
-	mov	$0x05, %al
-	movb    %al, (%edi)
-#endif
-out:
-	movl	%ebx, %eax
-	jmp	*%ebp
-
-#endif /* CONFIG_SC520 */