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-rw-r--r--contrib/loaders/flash/pic32mx.s131
-rw-r--r--contrib/loaders/flash/stellaris.s66
-rw-r--r--contrib/loaders/flash/stm32x.s52
-rw-r--r--contrib/loaders/flash/str7x.s57
-rw-r--r--contrib/loaders/flash/str9x.s54
5 files changed, 360 insertions, 0 deletions
diff --git a/contrib/loaders/flash/pic32mx.s b/contrib/loaders/flash/pic32mx.s
new file mode 100644
index 00000000..b26ff611
--- /dev/null
+++ b/contrib/loaders/flash/pic32mx.s
@@ -0,0 +1,131 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+ .text
+ .set noreorder
+ .set noat
+
+/* params:
+ * $a0 src adr - ram + result
+ * $a1 dest adr - flash
+ * $a2 count (32bit words)
+ * vars
+ *
+ * temps:
+ * $t0, $t1, $t2, $t3, $t4, $t5
+ * $s0, $s1, $s3, $s4, $s5
+ */
+
+ .type main, @function
+ .global main
+
+.ent main
+main:
+ /* setup constants */
+ lui $t0, 0xaa99
+ ori $t0, 0x6655 /* NVMKEY1 */
+ lui $t1, 0x5566
+ ori $t1, 0x99AA /* NVMKEY2 */
+ lui $t2, 0xBF80
+ ori $t2, 0xF400 /* NVMCON */
+ ori $t3, $zero, 0x4003 /* NVMCON row write cmd */
+ ori $t4, $zero, 0x8000 /* NVMCON start cmd */
+
+write_row:
+ /* can we perform a row write: 128 32bit words */
+ sltiu $s3, $a2, 128
+ bne $s3, $zero, write_word
+ ori $t5, $zero, 0x4000 /* NVMCON clear cmd */
+
+ /* perform row write 512 bytes */
+ sw $a1, 32($t2) /* set NVMADDR with dest addr - real addr */
+ sw $a0, 64($t2) /* set NVMSRCADDR with src addr - real addr */
+
+ bal progflash
+ addiu $a0, $a0, 512
+ addiu $a1, $a1, 512
+ beq $zero, $zero, write_row
+ addiu $a2, $a2, -128
+
+write_word:
+ /* write 32bit words */
+ lui $s5, 0xa000
+ ori $s5, 0x0000
+ or $a0, $a0, $s5 /* convert to virtual addr */
+
+ beq $zero, $zero, next_word
+ ori $t3, $zero, 0x4001 /* NVMCON word write cmd */
+
+prog_word:
+ lw $s4, 0($a0) /* load data - from virtual addr */
+ sw $s4, 48($t2) /* set NVMDATA with data */
+ sw $a1, 32($t2) /* set NVMADDR with dest addr - real addr */
+
+ bal progflash
+ addiu $a0, $a0, 4
+ addiu $a1, $a1, 4
+ addiu $a2, $a2, -1
+next_word:
+ bne $a2, $zero, prog_word
+ nop
+
+done:
+ beq $zero, $zero, exit
+ addiu $a0, $zero, 0
+
+error:
+ /* save result to $a0 */
+ addiu $a0, $s1, 0
+
+exit:
+ sdbbp
+.end main
+
+ .type progflash, @function
+ .global progflash
+
+.ent progflash
+progflash:
+ sw $t3, 0($t2) /* set NVMWREN */
+ sw $t0, 16($t2) /* write NVMKEY1 */
+ sw $t1, 16($t2) /* write NVMKEY2 */
+ sw $t4, 8($t2) /* start operation */
+
+waitflash:
+ lw $s0, 0($t2)
+ and $s0, $s0, $t4
+ bne $s0, $zero, waitflash
+ nop
+
+ /* following is to comply with errata #34
+ * 500ns delay required */
+ nop
+ nop
+ nop
+ nop
+ /* check for errors */
+ lw $s1, 0($t2)
+ andi $s1, $zero, 0x3000
+ bne $s1, $zero, error
+ sw $t5, 4($t2) /* clear NVMWREN */
+ jr $ra
+ nop
+
+.end progflash
diff --git a/contrib/loaders/flash/stellaris.s b/contrib/loaders/flash/stellaris.s
new file mode 100644
index 00000000..166dd52a
--- /dev/null
+++ b/contrib/loaders/flash/stellaris.s
@@ -0,0 +1,66 @@
+/***************************************************************************
+ * Copyright (C) 2006 by Magnus Lundin *
+ * lundin@mlu.mine.nu *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+ .text
+ .syntax unified
+ .cpu cortex-m3
+ .thumb
+ .thumb_func
+ .align 2
+
+/*
+ Call with :
+ r0 = buffer address
+ r1 = destination address
+ r2 = bytecount (in) - endaddr (work)
+
+ Used registers:
+ r3 = pFLASH_CTRL_BASE
+ r4 = FLASHWRITECMD
+ r5 = #1
+ r6 = bytes written
+ r7 = temp reg
+*/
+
+write:
+ ldr r3,pFLASH_CTRL_BASE
+ ldr r4,FLASHWRITECMD
+ movs r5, 1
+ movs r6, #0
+mainloop:
+ str r1, [r3, #0]
+ ldr r7, [r0, r6]
+ str r7, [r3, #4]
+ str r4, [r3, #8]
+waitloop:
+ ldr r7, [r3, #8]
+ tst r7, r5
+ bne waitloop
+ adds r1, r1, #4
+ adds r6, r6, #4
+ cmp r6, r2
+ bne mainloop
+ bkpt #0
+
+pFLASH_CTRL_BASE: .word 0x400FD000
+FLASHWRITECMD: .word 0xA4420001
diff --git a/contrib/loaders/flash/stm32x.s b/contrib/loaders/flash/stm32x.s
new file mode 100644
index 00000000..dcf2b83c
--- /dev/null
+++ b/contrib/loaders/flash/stm32x.s
@@ -0,0 +1,52 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+ .text
+ .arm
+
+/*
+ r0 - source address
+ r1 - target address
+ r2 - count (halfword-16bit)
+ r3 - result
+ r4 - temp
+ r5 - temp
+*/
+
+write:
+ ldr r4, STM32_FLASH_CR
+ ldr r5, STM32_FLASH_SR
+ mov r3, #1
+ str r3, [r4, #0]
+ ldrh r3, [r0], #2
+ strh r3, [r1], #2
+busy:
+ ldr r3, [r5, #0]
+ tst r3, #0x01
+ beq busy
+ tst r3, #0x14
+ bne exit
+ subs r2, r2, #1
+ bne write
+exit:
+ bkpt #0
+
+STM32_FLASH_CR: .word 0x40022010
+STM32_FLASH_SR: .word 0x4002200C
diff --git a/contrib/loaders/flash/str7x.s b/contrib/loaders/flash/str7x.s
new file mode 100644
index 00000000..fcdb007d
--- /dev/null
+++ b/contrib/loaders/flash/str7x.s
@@ -0,0 +1,57 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+ .text
+ .arm
+ .section .init
+/*
+ r0 source address
+ r1 address
+ r2 FLASH_CR0
+ r3 dword count
+ r4 result
+ r5 busy mask
+*/
+
+write:
+ mov r4, #0x10000000 /* set DWPG bit */
+ str r4, [r2, #0x0] /* FLASH_CR0 */
+ str r1, [r2, #0x10] /* FLASH_AR */
+ ldr r4, [r0], #4 /* load data */
+ str r4, [r2, #0x8] /* FLASH_DR0 */
+ ldr r4, [r0], #4 /* load data */
+ str r4, [r2, #0xc] /* FLASH_DR1 */
+ mov r4, #0x90000000 /* set DWPG and WMS bits */
+ str r4, [r2, #0x0] /* FLASH_CR0 */
+busy:
+ ldr r4, [r2, #0x0] /* FLASH_CR0 */
+ tst r4, r5
+ bne busy
+ ldr r4, [r2, #0x14] /* FLASH_ER */
+ tst r4, #0xff /* do we have errors */
+ tsteq r4, #0x100 /* write protection set */
+ bne exit
+ add r1, r1, #0x8 /* next 8 bytes */
+ subs r3, r3, #1 /* decremment dword count */
+ bne write
+exit:
+ b exit
+
+ .end
diff --git a/contrib/loaders/flash/str9x.s b/contrib/loaders/flash/str9x.s
new file mode 100644
index 00000000..9b15b3de
--- /dev/null
+++ b/contrib/loaders/flash/str9x.s
@@ -0,0 +1,54 @@
+/***************************************************************************
+ * Copyright (C) 2010 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+ .text
+ .arm
+ .section .init
+/*
+ r0 source address (in)
+ r1 target address (in)
+ r2 word count (in)
+ r3 result (out)
+*/
+
+write:
+ bic r4, r1, #3 /* word address */
+ mov r3, #0x40 /* write command */
+ strh r3, [r4, #0]
+ ldrh r3, [r0], #2 /* read data */
+ strh r3, [r1], #2 /* write data */
+ mov r3, #0x70 /* status command */
+ strh r3, [r4, #0]
+busy:
+ ldrb r3, [r4, #0] /* status */
+ tst r3, #0x80
+ beq busy
+ mov r5, #0x50 /* clear status command */
+ strh r5, [r4, #0]
+ mov r5, #0xFF /* read array */
+ strh r5, [r4, #0]
+ tst r3, #0x12
+ bne exit
+ subs r2, r2, #1 /* decremment word count */
+ bne write
+exit:
+ bkpt #0
+
+ .end
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