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/t194/plat_setup.c b/plat/nvidia/tegra/soc/t194/plat_setup.c
index 278dabe..8c57105 100644
--- a/plat/nvidia/tegra/soc/t194/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t194/plat_setup.c
@@ -21,12 +21,16 @@
#include <mce.h>
#include <mce_private.h>
#include <plat/common/platform.h>
+#include <spe.h>
#include <tegra_def.h>
#include <tegra_mc_def.h>
#include <tegra_platform.h>
#include <tegra_private.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
+/* ID for spe-console */
+#define TEGRA_CONSOLE_SPE_ID 0xFE
+
/*******************************************************************************
* The Tegra power domain tree has a single system level power domain i.e. a
* single root node. The first entry in the power domain descriptor specifies
@@ -68,12 +72,14 @@
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_MC_BASE, 0x10000U, /* 64KB */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
+#if !ENABLE_CONSOLE_SPE
MAP_REGION_FLAT(TEGRA_UARTA_BASE, 0x20000U, /* 128KB - UART A, B*/
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_UARTC_BASE, 0x20000U, /* 128KB - UART C, G */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_UARTD_BASE, 0x30000U, /* 192KB - UART D, E, F */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
+#endif
MAP_REGION_FLAT(TEGRA_FUSE_BASE, 0x10000U, /* 64KB */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_GICD_BASE, 0x20000U, /* 128KB */
@@ -84,6 +90,10 @@
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_RNG1_BASE, 0x10000U, /* 64KB */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
+#if ENABLE_CONSOLE_SPE
+ MAP_REGION_FLAT(TEGRA_AON_HSP_SM_6_7_BASE, 0x10000U, /* 64KB */
+ (uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
+#endif
MAP_REGION_FLAT(TEGRA_CAR_RESET_BASE, 0x10000U, /* 64KB */
(uint8_t)MT_DEVICE | (uint8_t)MT_RW | (uint8_t)MT_SECURE),
MAP_REGION_FLAT(TEGRA_PMC_BASE, 0x40000U, /* 256KB */
@@ -120,6 +130,7 @@
return 31250000;
}
+#if !ENABLE_CONSOLE_SPE
/*******************************************************************************
* Maximum supported UART controllers
******************************************************************************/
@@ -138,21 +149,47 @@
TEGRA_UARTF_BASE,
TEGRA_UARTG_BASE
};
+#endif
/*******************************************************************************
- * 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(int32_t id)
+void plat_enable_console(int32_t id)
{
- uint32_t ret;
+ uint32_t console_clock = 0U;
- if (id > TEGRA194_MAX_UART_PORTS) {
- ret = 0;
- } else {
- ret = tegra194_uart_addresses[id];
+#if ENABLE_CONSOLE_SPE
+ static console_spe_t spe_console;
+
+ if (id == TEGRA_CONSOLE_SPE_ID) {
+ (void)console_spe_register(TEGRA_CONSOLE_SPE_BASE,
+ console_clock,
+ TEGRA_CONSOLE_BAUDRATE,
+ &spe_console);
+ console_set_scope(&spe_console.console, CONSOLE_FLAG_BOOT |
+ CONSOLE_FLAG_RUNTIME | CONSOLE_FLAG_CRASH);
}
+#else
+ static console_16550_t uart_console;
- return ret;
+ if ((id > 0) && (id < TEGRA194_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(tegra194_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);
+ }
+#endif
}
/*******************************************************************************