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authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-05-30 23:57:05 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-05-30 23:57:05 -0500
commit5bc65793cbf8da0d35f19ef025dda22887e79e80 (patch)
tree8291998abd73055de6f487fafa174ee2a5d3afee /arch/blackfin/mach-bf561/head.S
parent6edae708bf77e012d855a7e2c7766f211d234f4f (diff)
parent3f0a6766e0cc5a577805732e5adb50a585c58175 (diff)
downloadblackbird-op-linux-5bc65793cbf8da0d35f19ef025dda22887e79e80.tar.gz
blackbird-op-linux-5bc65793cbf8da0d35f19ef025dda22887e79e80.zip
[SCSI] Merge up to linux-2.6 head
Conflicts: drivers/scsi/jazz_esp.c Same changes made by both SCSI and SPARC trees: problem with UTF-8 conversion in the copyright. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'arch/blackfin/mach-bf561/head.S')
-rw-r--r--arch/blackfin/mach-bf561/head.S79
1 files changed, 18 insertions, 61 deletions
diff --git a/arch/blackfin/mach-bf561/head.S b/arch/blackfin/mach-bf561/head.S
index 7bca478526b9..ad9187a866a5 100644
--- a/arch/blackfin/mach-bf561/head.S
+++ b/arch/blackfin/mach-bf561/head.S
@@ -127,7 +127,8 @@ ENTRY(__stext)
STI R2;
#endif
- /* Initialise UART*/
+ /* Initialise UART - when booting from u-boot, the UART is not disabled
+ * so if we dont initalize here, our serial console gets hosed */
p0.h = hi(UART_LCR);
p0.l = lo(UART_LCR);
r0 = 0x0(Z);
@@ -414,12 +415,6 @@ ENTRY(_bfin_reset)
w[p0] = r0.l;
#endif
- /* Clear the bits 13-15 in SWRST if they werent cleared */
- p0.h = hi(SICA_SWRST);
- p0.l = lo(SICA_SWRST);
- csync;
- r0.l = w[p0];
-
/* Clear the IMASK register */
p0.h = hi(IMASK);
p0.l = lo(IMASK);
@@ -433,68 +428,30 @@ ENTRY(_bfin_reset)
[p0] = r0;
SSYNC;
- /* Disable the WDOG TIMER */
- p0.h = hi(WDOGA_CTL);
- p0.l = lo(WDOGA_CTL);
- r0.l = 0xAD6;
- w[p0] = r0.l;
- SSYNC;
-
- /* Clear the sticky bit incase it is already set */
- p0.h = hi(WDOGA_CTL);
- p0.l = lo(WDOGA_CTL);
- r0.l = 0x8AD6;
- w[p0] = r0.l;
+ /* make sure SYSCR is set to use BMODE */
+ P0.h = hi(SICA_SYSCR);
+ P0.l = lo(SICA_SYSCR);
+ R0.l = 0x20;
+ W[P0] = R0.l;
SSYNC;
- /* Program the count value */
- R0.l = 0x100;
- R0.h = 0x0;
- P0.h = hi(WDOGA_CNT);
- P0.l = lo(WDOGA_CNT);
- [P0] = R0;
+ /* issue a system soft reset */
+ P1.h = hi(SICA_SWRST);
+ P1.l = lo(SICA_SWRST);
+ R1.l = 0x0007;
+ W[P1] = R1;
SSYNC;
- /* Program WDOG_STAT if necessary */
- P0.h = hi(WDOGA_CTL);
- P0.l = lo(WDOGA_CTL);
- R0 = W[P0](Z);
- CC = BITTST(R0,1);
- if !CC JUMP .LWRITESTAT;
- CC = BITTST(R0,2);
- if !CC JUMP .LWRITESTAT;
- JUMP .LSKIP_WRITE;
-
-.LWRITESTAT:
- /* When watch dog timer is enabled,
- * a write to STAT will load the contents of CNT to STAT
- */
- R0 = 0x0000(z);
- P0.h = hi(WDOGA_STAT);
- P0.l = lo(WDOGA_STAT)
- [P0] = R0;
- SSYNC;
-
-.LSKIP_WRITE:
- /* Enable the reset event */
- P0.h = hi(WDOGA_CTL);
- P0.l = lo(WDOGA_CTL);
- R0 = W[P0](Z);
- BITCLR(R0,1);
- BITCLR(R0,2);
- W[P0] = R0.L;
- SSYNC;
- NOP;
-
- /* Enable the wdog counter */
- R0 = W[P0](Z);
- BITCLR(R0,4);
- W[P0] = R0.L;
+ /* clear system soft reset */
+ R0.l = 0x0000;
+ W[P0] = R0;
SSYNC;
- IDLE;
+ /* issue core reset */
+ raise 1;
RTS;
+ENDPROC(_bfin_reset)
.data
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