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riscv: Implement the assert/deassert reset functions for v13

This commit is contained in:
Megan Wachs 2017-03-30 19:28:44 -07:00 committed by Palmer Dabbelt
parent 7203102c25
commit b04c6cb3ed
2 changed files with 11 additions and 2 deletions
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10
src/target/riscv/riscv-013.c
View File

@ -1817,12 +1817,18 @@ static int riscv013_resume(struct target *target, int current, uint32_t address,
static int assert_reset(struct target *target)
{
return ERROR_FAIL;
select_dmi(target);
dmi_write(target, DMI_DMCONTROL,
DMI_DMCONTROL_DMACTIVE | DMI_DMCONTROL_NDMRESET);
return ERROR_OK;
}
static int deassert_reset(struct target *target)
{
return ERROR_FAIL;
select_dmi(target);
dmi_write(target, DMI_DMCONTROL,
DMI_DMCONTROL_DMACTIVE);
return ERROR_OK;
}
static int read_memory(struct target *target, uint32_t address,

3
src/target/riscv/riscv.c
View File

@ -310,6 +310,7 @@ static int riscv_examine(struct target *target)
{
LOG_DEBUG("riscv_examine()");
if (target_was_examined(target)) {
LOG_DEBUG("Target was already examined.\n");
return ERROR_OK;
}
@ -348,12 +349,14 @@ static int riscv_resume(struct target *target, int current, uint32_t address,
static int riscv_assert_reset(struct target *target)
{
LOG_DEBUG("RISCV ASSERT RESET");
struct target_type *tt = get_target_type(target);
return tt->assert_reset(target);
}
static int riscv_deassert_reset(struct target *target)
{
LOG_DEBUG("RISCV DEASSERT RESET");
struct target_type *tt = get_target_type(target);
return tt->deassert_reset(target);
}