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Diffstat (limited to 'u-boot/arch/arm/cpu/arm926ejs/armada100/cpu.c')
-rw-r--r--u-boot/arch/arm/cpu/arm926ejs/armada100/cpu.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/u-boot/arch/arm/cpu/arm926ejs/armada100/cpu.c b/u-boot/arch/arm/cpu/arm926ejs/armada100/cpu.c
new file mode 100644
index 0000000..62aa175
--- /dev/null
+++ b/u-boot/arch/arm/cpu/arm926ejs/armada100/cpu.c
@@ -0,0 +1,92 @@
+/*
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ * Contributor: Mahavir Jain <mjain@marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <asm/arch/armada100.h>
+#include <asm/io.h>
+
+#define UARTCLK14745KHZ (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1))
+#define SET_MRVL_ID (1<<8)
+#define L2C_RAM_SEL (1<<4)
+
+int arch_cpu_init(void)
+{
+ u32 val;
+ struct armd1cpu_registers *cpuregs =
+ (struct armd1cpu_registers *) ARMD1_CPU_BASE;
+
+ struct armd1apb1_registers *apb1clkres =
+ (struct armd1apb1_registers *) ARMD1_APBC1_BASE;
+
+ struct armd1mpmu_registers *mpmu =
+ (struct armd1mpmu_registers *) ARMD1_MPMU_BASE;
+
+ /* set SEL_MRVL_ID bit in ARMADA100_CPU_CONF register */
+ val = readl(&cpuregs->cpu_conf);
+ val = val | SET_MRVL_ID;
+ writel(val, &cpuregs->cpu_conf);
+
+ /* Enable Clocks for all hardware units */
+ writel(0xFFFFFFFF, &mpmu->acgr);
+
+ /* Turn on AIB and AIB-APB Functional clock */
+ writel(APBC_APBCLK | APBC_FNCLK, &apb1clkres->aib);
+
+ /* ensure L2 cache is not mapped as SRAM */
+ val = readl(&cpuregs->cpu_conf);
+ val = val & ~(L2C_RAM_SEL);
+ writel(val, &cpuregs->cpu_conf);
+
+ /* Enable GPIO clock */
+ writel(APBC_APBCLK, &apb1clkres->gpio);
+
+ /*
+ * Enable Functional and APB clock at 14.7456MHz
+ * for configured UART console
+ */
+#if (CONFIG_SYS_NS16550_COM1 == ARMD1_UART3_BASE)
+ writel(UARTCLK14745KHZ, &apb1clkres->uart3);
+#elif (CONFIG_SYS_NS16550_COM1 == ARMD1_UART2_BASE)
+ writel(UARTCLK14745KHZ, &apb1clkres->uart2);
+#else
+ writel(UARTCLK14745KHZ, &apb1clkres->uart1);
+#endif
+ icache_enable();
+
+ return 0;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+ u32 id;
+ struct armd1cpu_registers *cpuregs =
+ (struct armd1cpu_registers *) ARMD1_CPU_BASE;
+
+ id = readl(&cpuregs->chip_id);
+ printf("SoC: Armada 88AP%X-%X\n", (id & 0xFFF), (id >> 0x10));
+ return 0;
+}
+#endif