From e59581c56ab5d6e0207ddac3b2c1d55cb36ec706 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Tue, 28 Nov 2006 17:55:49 +0100
Subject: [PATCH] [PATCH] Enable the IceCube/lite5200 variants to pass a device
tree to Linux.
This patch adds the code and configuration necessary to boot with an
arch/powerpc Linux kernel.
Signed-off-by: Grant Likely <grant.likely@gmail.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
---
board/icecube/icecube.c | 12 ++++++++++++
cpu/mpc5xxx/cpu.c | 28 ++++++++++++++++++++++++++++
include/configs/IceCube.h | 13 +++++++++++++
3 files changed, 53 insertions(+)
diff --git a/board/icecube/icecube.c b/board/icecube/icecube.c
index f958b32dbd..ddad1bbb9e 100644
--- a/board/icecube/icecube.c
+++ b/board/icecube/icecube.c
@@ -29,6 +29,10 @@
#include <pci.h>
#include <asm/processor.h>
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
+
#if defined(CONFIG_LITE5200B)
#include "mt46v32m16.h"
#else
@@ -332,3 +336,11 @@ void ide_set_reset (int idereset)
}
}
#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
+
+#if defined(CONFIG_OF_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP)
+void
+ft_board_setup(void *blob, bd_t *bd)
+{
+ ft_cpu_setup(blob, bd);
+}
+#endif
diff --git a/cpu/mpc5xxx/cpu.c b/cpu/mpc5xxx/cpu.c
index 6b6f8282cf..20e6735de4 100644
--- a/cpu/mpc5xxx/cpu.c
+++ b/cpu/mpc5xxx/cpu.c
@@ -31,6 +31,10 @@
#include <mpc5xxx.h>
#include <asm/processor.h>
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
int checkcpu (void)
@@ -102,3 +106,27 @@ unsigned long get_tbclk (void)
}
/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_OF_FLAT_TREE
+void
+ft_cpu_setup(void *blob, bd_t *bd)
+{
+ u32 *p;
+ ulong clock;
+ int len;
+
+ clock = bd->bi_busfreq;
+ p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
+ if (p != NULL)
+ *p = cpu_to_be32(clock);
+
+ p = ft_get_prop(blob, "/" OF_SOC "/bus-frequency", &len);
+ if (p != NULL)
+ *p = cpu_to_be32(clock);
+
+ p = ft_get_prop(blob, "/" OF_SOC "/ethernet@3000/mac-address", &len);
+ if (p != NULL)
+ memcpy(p, bd->bi_enetaddr, 6);
+
+}
+#endif
diff --git a/include/configs/IceCube.h b/include/configs/IceCube.h
index 1152f838d9..0d3825413e 100644
--- a/include/configs/IceCube.h
+++ b/include/configs/IceCube.h
@@ -172,6 +172,19 @@
#undef CFG_IPBSPEED_133 /* define for 133MHz speed */
#endif
#endif /* CONFIG_MPC5200 */
+
+/* pass open firmware flat tree */
+#define CONFIG_OF_FLAT_TREE 1
+#define CONFIG_OF_BOARD_SETUP 1
+
+/* maximum size of the flat tree (8K) */
+#define OF_FLAT_TREE_MAX_SIZE 8192
+
+#define OF_CPU "PowerPC,5200@0"
+#define OF_SOC "soc5200@f0000000"
+#define OF_TBCLK (bd->bi_busfreq / 8)
+#define OF_STDOUT_PATH "/soc5200@f0000000/serial@2000"
+
/*
* I2C configuration
*/
--
2.39.5