APM821xx: Add CPU support

APM821XX is a new line of SoCs which are derivatives of
PPC44X family of processors. This patch adds support of CPU, cache,
tlb, 32k ocm, bootstraps, PLB and AHB bus.

Signed-off-by: Tirumala R Marri <tmarri@apm.com>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/apm821xx.h b/arch/powerpc/include/asm/apm821xx.h
new file mode 100644
index 0000000..8841bc9
--- /dev/null
+++ b/arch/powerpc/include/asm/apm821xx.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2010, Applied Micro Circuits Corporation
+ * Author: Tirumala R Marri <tmarri@apm.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _APM821XX_H_
+#define _APM821XX_H_
+
+#define CONFIG_SDRAM_PPC4xx_IBM_DDR2	/* IBM DDR(2) controller */
+
+/* Memory mapped registers */
+#define CONFIG_SYS_PERIPHERAL_BASE	0xEF600000
+#define CONFIG_SYS_NS16550_COM1	(CONFIG_SYS_PERIPHERAL_BASE + 0x0200)
+#define CONFIG_SYS_NS16550_COM2	(CONFIG_SYS_PERIPHERAL_BASE + 0x0300)
+
+#define GPIO0_BASE		(CONFIG_SYS_PERIPHERAL_BASE + 0x0700)
+
+#define SDR0_SRST0_DMC		0x00200000
+#define SDR0_SRST1_AHB		0x00000040      /* PLB4XAHB bridge */
+
+/* AHB config. */
+#define AHB_TOP			0xA4
+#define AHB_BOT			0xA5
+
+/* clk divisors */
+#define PLLSYS0_FWD_DIV_A_MASK	0x000000f0	/* Fwd Div A */
+#define PLLSYS0_FWD_DIV_B_MASK	0x0000000f	/* Fwd Div B */
+#define PLLSYS0_FB_DIV_MASK	0x0000ff00	/* Feedback divisor */
+#define PLLSYS0_OPB_DIV_MASK	0x0c000000	/* OPB Divisor */
+#define PLLSYS0_EPB_DIV_MASK	0x00000300      /* EPB divisor */
+#define PLLSYS0_EXTSL_MASK	0x00000080      /* PerClk feedback path */
+#define PLLSYS0_PLBEDV0_DIV_MASK	0xe0000000/* PLB Early Clk Div*/
+#define PLLSYS0_PERCLK_DIV_MASK	0x03000000	/* Peripheral Clk Divisor */
+#define PLLSYS0_SEL_MASK	0x18000000	/* 0 = PLL, 1 = PerClk */
+
+/*
+   + * Clocking Controller
+   + */
+#define CPR0_CLKUPD	0x0020
+#define CPR0_PLLC	0x0040
+#define CPR0_PLLC_SEL(pllc)		(((pllc) & 0x01000000) >> 24)
+#define CPR0_PLLD	0x0060
+#define CPR0_PLLD_FDV(plld)		(((plld) & 0xff000000) >> 24)
+#define CPR0_PLLD_FWDVA(plld)		(((plld) & 0x000f0000) >> 16)
+#define CPR0_CPUD	0x0080
+#define CPR0_CPUD_CPUDV(cpud)		(((cpud) & 0x07000000) >> 24)
+#define CPR0_PLB2D	0x00a0
+#define CPR0_PLB2D_PLB2DV(plb2d)	(((plb2d) & 0x06000000) >> 25)
+#define CPR0_OPBD	0x00c0
+#define CPR0_OPBD_OPBDV(opbd)		(((opbd) & 0x03000000) >> 24)
+#define CPR0_PERD	0x00e0
+#define CPR0_PERD_PERDV(perd)		(((perd) & 0x03000000) >> 24)
+#define CPR0_DDR2D	0x0100
+#define CPR0_DDR2D_DDR2DV(ddr2d) 	(((ddr2d) & 0x06000000) >> 25)
+#define CLK_ICFG	0x0140
+
+#endif /* _APM821XX_H_ */