[U-Boot] [PATCH V2 10/13] ARM: tegra: add common (shared) CPU files

Stephen Warren
2014-01-24T00:42:57Z

From: Tom Warren <twarren.nvidia@gmail.com>

These files are used by both SPL and main U-Boot.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
v2:
* Fixed incorrect brace placement in tegra_get_chip_sku(), and allow any
SKU on Tegra124 just like other SoCs.
* Simplified change to config_cache().
---
arch/arm/cpu/tegra-common/ap.c | 16 ++++++++++++----
arch/arm/cpu/tegra-common/board.c | 10 ++++++++--
arch/arm/cpu/tegra-common/cache.c | 10 ++++------
3 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/arch/arm/cpu/tegra-common/ap.c b/arch/arm/cpu/tegra-common/ap.c
index f205be402abe..91d70da65661 100644
--- a/arch/arm/cpu/tegra-common/ap.c
+++ b/arch/arm/cpu/tegra-common/ap.c
@@ -1,5 +1,5 @@
/*
-* (C) Copyright 2010-2011
+* (C) Copyright 2010-2014
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
@@ -27,7 +27,7 @@ int tegra_get_chip(void)
/*
* This is undocumented, Chip ID is bits 15:8 of the register
* APB_MISC + 0x804, and has value 0x20 for Tegra20, 0x30 for
- * Tegra30, and 0x35 for T114.
+ * Tegra30, 0x35 for T114, and 0x40 for Tegra124.
*/
rev = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >> HIDREV_CHIPID_SHIFT;
debug("%s: CHIPID is 0x%02X\n", __func__, rev);
@@ -84,7 +84,15 @@ int tegra_get_chip_sku(void)
return TEGRA_SOC_T114;
}
break;
+ case CHIPID_TEGRA124:
+ switch (sku_id) {
+ case SKU_ID_T124_ENG:
+ default:
+ return TEGRA_SOC_T124;
+ }
+ break;
}
+
/* unknown chip/sku id */
printf("%s: ERROR: UNKNOWN CHIP/SKU ID COMBO (0x%02X/0x%02X)\n",
__func__, chip_id, sku_id);
@@ -119,8 +127,8 @@ static u32 get_odmdata(void)
* ODMDATA is stored in the BCT in IRAM by the BootROM.
* The BCT start and size are stored in the BIT in IRAM.
* Read the data @ bct_start + (bct_size - 12). This works
- * on T20 and T30 BCTs, which are locked down. If this changes
- * in new chips (T114, etc.), we can revisit this algorithm.
+ * on BCTs for currently supported SoCs, which are locked down.
+ * If this changes in new chips, we can revisit this algorithm.
*/

u32 bct_start, odmdata;
diff --git a/arch/arm/cpu/tegra-common/board.c b/arch/arm/cpu/tegra-common/board.c
index d9cbda8a749f..6a6faf4b2760 100644
--- a/arch/arm/cpu/tegra-common/board.c
+++ b/arch/arm/cpu/tegra-common/board.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2010,2011
+ * (C) Copyright 2010-2014
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
@@ -109,12 +109,18 @@ static int uart_configs[] = {
-1,
-1,
-1,
-#else /* Tegra114 */
+#elif defined(CONFIG_TEGRA114)
-1,
-1,
-1,
FUNCMUX_UART4_GMI, /* UARTD */
-1,
+#else /* Tegra124 */
+ FUNCMUX_UART1_KBC, /* UARTA */
+ -1,
+ -1,
+ FUNCMUX_UART4_GPIO, /* UARTD */
+ -1,
#endif
};

diff --git a/arch/arm/cpu/tegra-common/cache.c b/arch/arm/cpu/tegra-common/cache.c
index 48e9319c7508..94f5bce90ec3 100644
--- a/arch/arm/cpu/tegra-common/cache.c
+++ b/arch/arm/cpu/tegra-common/cache.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -23,8 +23,6 @@

void config_cache(void)
{
- struct apb_misc_gp_ctlr *gp =
- (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
u32 reg = 0;

/* enable SMP mode and FW for CPU0, by writing to Auxiliary Ctl reg */
@@ -33,10 +31,10 @@ void config_cache(void)
"orr r0, r0, #0x41\n"
"mcr p15, 0, r0, c1, c0, 1\n");

- /* Currently, only T114 needs this L2 cache change to boot Linux */
- reg = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK);
- if (reg != (CHIPID_TEGRA114 << HIDREV_CHIPID_SHIFT))
+ /* Currently, only Tegra114+ needs this L2 cache change to boot Linux */
+ if (tegra_get_chip() < CHIPID_TEGRA114)
return;
+
/*
* Systems with an architectural L2 cache must not use the PL310.
* Config L2CTLR here for a data RAM latency of 3 cycles.
--
1.8.1.5