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target: factor target_init() into pieces

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Moves body of target initialization loop into a helper function,
cleaning up its visual flow in the process.
This commit is contained in:
Zachary T Welch 2009-11-30 18:27:23 -08:00
parent ac1887c703
commit e03f3c57a5
1 changed files with 94 additions and 79 deletions
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173
src/target/target.c
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@ -681,94 +681,109 @@ err_write_phys_memory(struct target *target, uint32_t address,
static int handle_target(void *priv);
static int target_init_one(struct command_context *cmd_ctx,
struct target *target)
{
target_reset_examined(target);
struct target_type *type = target->type;
if (type->examine == NULL)
type->examine = default_examine;
int retval = type->init_target(cmd_ctx, target);
if (ERROR_OK != retval)
{
LOG_ERROR("target '%s' init failed", target_name(target));
return retval;
}
/**
* @todo get rid of those *memory_imp() methods, now that all
* callers are using target_*_memory() accessors ... and make
* sure the "physical" paths handle the same issues.
*/
/* a non-invasive way(in terms of patches) to add some code that
* runs before the type->write/read_memory implementation
*/
type->write_memory_imp = target->type->write_memory;
type->write_memory = target_write_memory_imp;
type->read_memory_imp = target->type->read_memory;
type->read_memory = target_read_memory_imp;
type->soft_reset_halt_imp = target->type->soft_reset_halt;
type->soft_reset_halt = target_soft_reset_halt_imp;
type->run_algorithm_imp = target->type->run_algorithm;
type->run_algorithm = target_run_algorithm_imp;
/* Sanity-check MMU support ... stub in what we must, to help
* implement it in stages, but warn if we need to do so.
*/
if (type->mmu)
{
if (type->write_phys_memory == NULL)
{
LOG_ERROR("type '%s' is missing write_phys_memory",
type->name);
type->write_phys_memory = err_write_phys_memory;
}
if (type->read_phys_memory == NULL)
{
LOG_ERROR("type '%s' is missing read_phys_memory",
type->name);
type->read_phys_memory = err_read_phys_memory;
}
if (type->virt2phys == NULL)
{
LOG_ERROR("type '%s' is missing virt2phys", type->name);
type->virt2phys = identity_virt2phys;
}
}
else
{
/* Make sure no-MMU targets all behave the same: make no
* distinction between physical and virtual addresses, and
* ensure that virt2phys() is always an identity mapping.
*/
if (type->write_phys_memory || type->read_phys_memory
|| type->virt2phys)
{
LOG_WARNING("type '%s' has bad MMU hooks", type->name);
}
type->mmu = no_mmu;
type->write_phys_memory = type->write_memory;
type->read_phys_memory = type->read_memory;
type->virt2phys = identity_virt2phys;
}
return ERROR_OK;
}
int target_init(struct command_context *cmd_ctx)
{
struct target *target;
int retval;
for (target = all_targets; target; target = target->next) {
struct target_type *type = target->type;
target_reset_examined(target);
if (target->type->examine == NULL)
{
target->type->examine = default_examine;
}
if ((retval = target->type->init_target(cmd_ctx, target)) != ERROR_OK)
{
LOG_ERROR("target '%s' init failed", target_name(target));
return retval;
}
/**
* @todo get rid of those *memory_imp() methods, now that all
* callers are using target_*_memory() accessors ... and make
* sure the "physical" paths handle the same issues.
*/
/* a non-invasive way(in terms of patches) to add some code that
* runs before the type->write/read_memory implementation
*/
target->type->write_memory_imp = target->type->write_memory;
target->type->write_memory = target_write_memory_imp;
target->type->read_memory_imp = target->type->read_memory;
target->type->read_memory = target_read_memory_imp;
target->type->soft_reset_halt_imp = target->type->soft_reset_halt;
target->type->soft_reset_halt = target_soft_reset_halt_imp;
target->type->run_algorithm_imp = target->type->run_algorithm;
target->type->run_algorithm = target_run_algorithm_imp;
/* Sanity-check MMU support ... stub in what we must, to help
* implement it in stages, but warn if we need to do so.
*/
if (type->mmu) {
if (type->write_phys_memory == NULL) {
LOG_ERROR("type '%s' is missing %s",
type->name,
"write_phys_memory");
type->write_phys_memory = err_write_phys_memory;
}
if (type->read_phys_memory == NULL) {
LOG_ERROR("type '%s' is missing %s",
type->name,
"read_phys_memory");
type->read_phys_memory = err_read_phys_memory;
}
if (type->virt2phys == NULL) {
LOG_ERROR("type '%s' is missing %s",
type->name,
"virt2phys");
type->virt2phys = identity_virt2phys;
}
/* Make sure no-MMU targets all behave the same: make no
* distinction between physical and virtual addresses, and
* ensure that virt2phys() is always an identity mapping.
*/
} else {
if (type->write_phys_memory
|| type->read_phys_memory
|| type->virt2phys)
LOG_WARNING("type '%s' has broken MMU hooks",
type->name);
type->mmu = no_mmu;
type->write_phys_memory = type->write_memory;
type->read_phys_memory = type->read_memory;
type->virt2phys = identity_virt2phys;
}
}
if (all_targets)
for (target = all_targets; target; target = target->next)
{
if ((retval = target_register_user_commands(cmd_ctx)) != ERROR_OK)
return retval;
if ((retval = target_register_timer_callback(&handle_target, 100, 1, cmd_ctx->interp)) != ERROR_OK)
retval = target_init_one(cmd_ctx, target);
if (ERROR_OK != retval)
return retval;
}
if (!all_targets)
return ERROR_OK;
retval = target_register_user_commands(cmd_ctx);
if (ERROR_OK != retval)
return retval;
retval = target_register_timer_callback(&handle_target,
100, 1, cmd_ctx->interp);
if (ERROR_OK != retval)
return retval;
return ERROR_OK;
}