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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-12-03 15:02:36 +1100 |
|---|---|---|
| committer | Thomas Huth <thuth@linux.vnet.ibm.com> | 2011-03-22 15:22:00 +0100 |
| commit | 39426bad550f340dcf2b544ae23f465fbbbc42f5 (patch) | |
| tree | 1974f16adec8b1322b4adeaa65783780a5ebeb25 /lib/libhvcall/hvcall.S | |
| parent | cf69a59a3edefc3bea57cceea2cbedd25c7b680d (diff) | |
| download | SLOF-39426bad550f340dcf2b544ae23f465fbbbc42f5.zip SLOF-39426bad550f340dcf2b544ae23f465fbbbc42f5.tar.gz SLOF-39426bad550f340dcf2b544ae23f465fbbbc42f5.tar.bz2 | |
Initial qemu/KVM board support
Added a new board for SLOF running on KVM/qemu.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Diffstat (limited to 'lib/libhvcall/hvcall.S')
| -rw-r--r-- | lib/libhvcall/hvcall.S | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/libhvcall/hvcall.S b/lib/libhvcall/hvcall.S new file mode 100644 index 0000000..5cc0bd7 --- /dev/null +++ b/lib/libhvcall/hvcall.S @@ -0,0 +1,86 @@ +#define _ASM +#define __ASSEMBLY__ +#include "macros.h" +#include "libhvcall.h" + +#define HVCALL .long 0x44000022 + + .text + .align 3 + +ENTRY(hv_generic) + HVCALL + blr + +ENTRY(hv_putchar) + sldi r6,r3,(24+32) + li r3,H_PUT_TERM_CHAR + li r4,0 + li r5,1 + HVCALL + blr + +ENTRY(hv_getchar) + mflr r10 + bl .hv_haschar + mtlr r10 + cmpwi cr0,r3,0 + beqlr + lis r9,inbuf@h + ori r9,r9,inbuf@l + lwz r4,20(r9) + lbzx r3,r4,r9 + addi r4,r4,1 + stw r4,20(r9) + blr + +ENTRY(hv_haschar) + li r3,-1 + lis r9,inbuf@h + ori r9,r9,inbuf@l + lwz r5,16(r9) + lwz r6,20(r9) + cmplw cr0,r5,r6 + bnelr + li r3,H_GET_TERM_CHAR + li r4,0 + HVCALL + lis r9,inbuf@h + ori r9,r9,inbuf@l + stw r4,16(r9) + li r3,0 + stw r3,20(r9) + cmplwi cr0,r4,0 + beqlr + li r3,-1 + std r5,0(r9) + std r6,8(r9) + blr + +ENTRY(hv_send_crq) + ld r5,0(r4) + ld r6,8(r4) + mr r4,r3 + li r3,H_SEND_CRQ + HVCALL + blr + +ENTRY(hv_send_logical_lan) + li r11,0 /* no continue token for now */ + mr r10,r9 + mr r9,r8 + mr r8,r7 + mr r7,r6 + mr r6,r5 + mr r5,r4 + mr r4,r3 + li r3,H_SEND_LOGICAL_LAN + HVCALL + blr + + .section ".bss" + inbuf: .space 16 +inlen: .space 4 +inpos: .space 4 + .text +
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