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soc/cavium: dynamic UART initialization for cavium cn8100 

Now only those UARTs that are enabled in devicetree.cb are initialized.

Tested on Opencellular Elgon.

Change-Id: I145c224148f0cc078bb1c76f588f603e73121a62
Signed-off-by: Jens Drenhaus <jens.drenhaus@9elements.com>
Reviewed-on: https://review.coreboot.org/28975
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Jens Drenhaus 2018-10-09 13:02:49 +02:00 committed by Patrick Rudolph
parent 6ae7a2a101
commit fe66a0760c
3 changed files with 28 additions and 12 deletions
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6
src/mainboard/cavium/cn8100_sff_evb/mainboard.c
View File

@ -83,12 +83,6 @@ static void mainboard_init(struct device *dev)
{
size_t i;
/* Init UARTs */
for (i = 0; i < 4; i++) {
if (!uart_is_enabled(i))
uart_setup(i, 0);
}
/* Init timer */
soc_timer_init();

6
src/mainboard/opencellular/elgon/mainboard.c
View File

@ -101,12 +101,6 @@ static void mainboard_init(struct device *dev)
{
size_t i;
/* Init UARTs */
for (i = 0; i < 4; i++) {
if (!uart_is_enabled(i))
uart_setup(i, 0);
}
/* Init timer */
soc_timer_init();

28
src/soc/cavium/cn81xx/soc.c
View File

@ -24,6 +24,7 @@
#include <soc/clock.h>
#include <soc/sdram.h>
#include <soc/timer.h>
#include <soc/uart.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
@ -207,6 +208,21 @@ static int dt_platform_fixup(struct device_tree_fixup *fixup,
printk(BIOS_ERR, "%s: Node not found. OS might miss-behave !\n",
__func__);
/* Remove unused UART entries */
for (i = 0; i < 4; i++) {
char path[32];
const uint64_t addr = UAAx_PF_BAR0(i);
/* Remove the node */
snprintf(path, sizeof(path), "soc@0/serial@%llx", addr);
dt_node = dt_find_node_by_path(tree->root, path, NULL, NULL, 0);
if (!dt_node || uart_is_enabled(i)) {
printk(BIOS_INFO, "%s: ignoring %s\n", __func__, path);
continue;
}
printk(BIOS_INFO, "%s: Removing node %s\n", __func__, path);
list_remove(&dt_node->list_node);
}
/* Remove unused PEM entries */
for (i = 0; i < 8; i++) {
char path[32];
@ -374,6 +390,18 @@ static void soc_init(struct device *dev)
}
}
/* Init UARTs */
size_t i;
struct device *uart_dev;
for (i = 0; i <= 3; i++) {
uart_dev = dev_find_slot(1, PCI_DEVFN(8, i));
/* using device enable state from devicetree.cb */
if (uart_dev && uart_dev->enabled) {
if (!uart_is_enabled(i))
uart_setup(i, 0);
}
}
if (IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE))
soc_init_atf();
}