Tegra: introduce plat_enable_console()
This patch introduces the 'plat_enable_console' handler to allow
the platform to enable the right console. Tegra194 platform supports
multiple console, while all the previous platforms support only one
console.
For Tegra194 platforms, the previous bootloader checks the platform
config and sets the uart-id boot parameter, to 0xFE. On seeing this
boot parameter, the platform port uses the proper memory aperture
base address to communicate with the SPE. This functionality is
currently protected by a platform macro, ENABLE_CONSOLE_SPE.
Change-Id: I3972aa376d66bd10d868495f561dc08fe32fcb10
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t132/plat_setup.c b/plat/nvidia/tegra/soc/t132/plat_setup.c
index 570acd9..df62678 100644
--- a/plat/nvidia/tegra/soc/t132/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t132/plat_setup.c
@@ -6,9 +6,11 @@
#include <arch_helpers.h>
#include <common/bl_common.h>
+#include <drivers/console.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
#include <plat/common/platform.h>
#include <tegra_def.h>
+#include <tegra_platform.h>
#include <tegra_private.h>
/* sets of MMIO ranges setup */
@@ -85,14 +87,30 @@
};
/*******************************************************************************
- * Retrieve the UART controller base to be used as the console
+ * Enable console corresponding to the console ID
******************************************************************************/
-uint32_t plat_get_console_from_id(int id)
+void plat_enable_console(int32_t id)
{
- if (id > TEGRA132_MAX_UART_PORTS)
- return 0;
+ static console_16550_t uart_console;
+ uint32_t console_clock;
- return tegra132_uart_addresses[id];
+ if ((id > 0) && (id < TEGRA132_MAX_UART_PORTS)) {
+ /*
+ * Reference clock used by the FPGAs is a lot slower.
+ */
+ if (tegra_platform_is_fpga()) {
+ console_clock = TEGRA_BOOT_UART_CLK_13_MHZ;
+ } else {
+ console_clock = TEGRA_BOOT_UART_CLK_408_MHZ;
+ }
+
+ (void)console_16550_register(tegra132_uart_addresses[id],
+ console_clock,
+ TEGRA_CONSOLE_BAUDRATE,
+ &uart_console);
+ console_set_scope(&uart_console.console, CONSOLE_FLAG_BOOT |
+ CONSOLE_FLAG_RUNTIME | CONSOLE_FLAG_CRASH);
+ }
}
/*******************************************************************************