diff options
| author | Harald Welte <laforge@gnumonks.org> | 2010-02-23 01:31:03 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2010-02-23 01:44:37 +0100 |
| commit | 3f3a84d5164927aaa430596da773fb96cf5ee890 (patch) | |
| tree | 4493bfce75d2aa7219db9ec839bcf073fe9f82dd /src/target/firmware/calypso | |
| parent | c7224b79bd8631b16aea3825d11b6cd0624b8d17 (diff) | |
Calypso TPU: initialize TPU RAM to zero at tpu_init() time
Diffstat (limited to 'src/target/firmware/calypso')
| -rw-r--r-- | src/target/firmware/calypso/tpu.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/target/firmware/calypso/tpu.c b/src/target/firmware/calypso/tpu.c index 0df70a2c..37564f72 100644 --- a/src/target/firmware/calypso/tpu.c +++ b/src/target/firmware/calypso/tpu.c @@ -190,7 +190,7 @@ void tpu_rewind(void) void tpu_enqueue(uint16_t instr) { - printd("tpu_enqueue(tpu_ptr=%p, instr=0x%04x\n", tpu_ptr, instr); + printd("tpu_enqueue(tpu_ptr=%p, instr=0x%04x)\n", tpu_ptr, instr); *tpu_ptr++ = instr; if (tpu_ptr > (uint16_t *) TPU_RAM_END) puts("TPU enqueue beyond end of TPU memory\n"); @@ -198,9 +198,17 @@ void tpu_enqueue(uint16_t instr) void tpu_init(void) { - /* Get TPU out of reset */ + uint16_t *ptr; + + /* Put TPU into Reset and enable clock */ tpu_reset(1); tpu_clk_enable(1); + + /* set all TPU RAM to zero */ + for (ptr = (uint16_t *) BASE_ADDR_TPU_RAM; ptr < (uint16_t *) TPU_RAM_END; ptr++) + *ptr = 0x0000; + + /* Get TPU out of reset */ tpu_reset(0); /* Disable all interrupts */ writeb(0x7, TPU_REG(INT_CTRL)); |