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dm: Add support for all targets which requires MANUAL_RELOC 

Targets with CONFIG_NEEDS_MANUAL_RELOC do not use REL/RELA
relocation (mostly only GOT) where functions aray are not
updated. This patch is fixing function pointers for DM core
and serial-uclass to ensure that relocated functions are called.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Michal Simek 2015-02-02 16:31:59 +01:00 committed by Simon Glass
parent 99c0ae16d8
commit 484fdf5ba0
2 changed files with 80 additions and 0 deletions
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64
drivers/core/root.c
View File

@ -37,6 +37,65 @@ struct udevice *dm_root(void)
return gd->dm_root;
}
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
void fix_drivers(void)
{
struct driver *drv =
ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver);
struct driver *entry;
for (entry = drv; entry != drv + n_ents; entry++) {
if (entry->of_match)
entry->of_match = (const struct udevice_id *)
((u32)entry->of_match + gd->reloc_off);
if (entry->bind)
entry->bind += gd->reloc_off;
if (entry->probe)
entry->probe += gd->reloc_off;
if (entry->remove)
entry->remove += gd->reloc_off;
if (entry->unbind)
entry->unbind += gd->reloc_off;
if (entry->ofdata_to_platdata)
entry->ofdata_to_platdata += gd->reloc_off;
if (entry->child_pre_probe)
entry->child_pre_probe += gd->reloc_off;
if (entry->child_post_remove)
entry->child_post_remove += gd->reloc_off;
/* OPS are fixed in every uclass post_probe function */
if (entry->ops)
entry->ops += gd->reloc_off;
}
}
void fix_uclass(void)
{
struct uclass_driver *uclass =
ll_entry_start(struct uclass_driver, uclass);
const int n_ents = ll_entry_count(struct uclass_driver, uclass);
struct uclass_driver *entry;
for (entry = uclass; entry != uclass + n_ents; entry++) {
if (entry->post_bind)
entry->post_bind += gd->reloc_off;
if (entry->pre_unbind)
entry->pre_unbind += gd->reloc_off;
if (entry->post_probe)
entry->post_probe += gd->reloc_off;
if (entry->pre_remove)
entry->pre_remove += gd->reloc_off;
if (entry->init)
entry->init += gd->reloc_off;
if (entry->destroy)
entry->destroy += gd->reloc_off;
/* FIXME maybe also need to fix these ops */
if (entry->ops)
entry->ops += gd->reloc_off;
}
}
#endif
int dm_init(void)
{
int ret;
@ -47,6 +106,11 @@ int dm_init(void)
}
INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST);
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
fix_drivers();
fix_uclass();
#endif
ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
if (ret)
return ret;

16
drivers/serial/serial-uclass.c
View File

@ -258,6 +258,22 @@ static int serial_post_probe(struct udevice *dev)
#endif
int ret;
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
if (ops->setbrg)
ops->setbrg += gd->reloc_off;
if (ops->getc)
ops->getc += gd->reloc_off;
if (ops->putc)
ops->putc += gd->reloc_off;
if (ops->pending)
ops->pending += gd->reloc_off;
if (ops->clear)
ops->clear += gd->reloc_off;
#if CONFIG_POST & CONFIG_SYS_POST_UART
if (ops->loop)
ops->loop += gd->reloc_off
#endif
#endif
/* Set the baud rate */
if (ops->setbrg) {
ret = ops->setbrg(dev, gd->baudrate);