[PATCH] Add AMCC Acadia (405EZ) eval board support
This patch adds support for the new AMCC Acadia eval board.
Please note that this Acadia/405EZ support is still in a beta stage.
Still lot's of cleanup needed but we need a preliminary release now.
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/amcc/acadia/cpr.c b/board/amcc/acadia/cpr.c
new file mode 100644
index 0000000..10d8290
--- /dev/null
+++ b/board/amcc/acadia/cpr.c
@@ -0,0 +1,195 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <ppc405.h>
+
+/* test-only: move into cpu directory!!! */
+
+#if defined(PLLMR0_200_133_66)
+void board_pll_init_f(void)
+{
+ /*
+ * set PLL clocks based on input sysclk is 33M
+ *
+ * ----------------------------------
+ * | CLK | FREQ (MHz) | DIV RATIO |
+ * ----------------------------------
+ * | CPU | 200.0 | 4 (0x02)|
+ * | PLB | 133.3 | 6 (0x06)|
+ * | OPB | 66.6 | 12 (0x0C)|
+ * | EBC | 66.6 | 12 (0x0C)|
+ * | SPI | 66.6 | 12 (0x0C)|
+ * | UART0 | 10.0 | 40 (0x28)|
+ * | UART1 | 10.0 | 40 (0x28)|
+ * | DAC | 2.0 | 200 (0xC8)|
+ * | ADC | 2.0 | 200 (0xC8)|
+ * | PWM | 100.0 | 4 (0x04)|
+ * | EMAC | 25.0 | 16 (0x10)|
+ * -----------------------------------
+ */
+
+ /* Initialize PLL */
+ mtcpr(cprpllc, 0x0000033c);
+ mtcpr(cprplld, 0x0c010200);
+ mtcpr(cprprimad, 0x04060c0c);
+ mtcpr(cprperd0, 0x000c0000); /* SPI clk div. eq. OPB clk div. */
+ mtcpr(cprclkupd, 0x40000000);
+}
+
+#elif defined(PLLMR0_266_160_80)
+
+void board_pll_init_f(void)
+{
+ /*
+ * set PLL clocks based on input sysclk is 33M
+ *
+ * ----------------------------------
+ * | CLK | FREQ (MHz) | DIV RATIO |
+ * ----------------------------------
+ * | CPU | 266.64 | 3 |
+ * | PLB | 159.98 | 5 (0x05)|
+ * | OPB | 79.99 | 10 (0x0A)|
+ * | EBC | 79.99 | 10 (0x0A)|
+ * | SPI | 79.99 | 10 (0x0A)|
+ * | UART0 | 28.57 | 7 (0x07)|
+ * | UART1 | 28.57 | 7 (0x07)|
+ * | DAC | 28.57 | 7 (0xA7)|
+ * | ADC | 4 | 50 (0x32)|
+ * | PWM | 28.57 | 7 (0x07)|
+ * | EMAC | 4 | 50 (0x32)|
+ * -----------------------------------
+ */
+
+ /* Initialize PLL */
+ mtcpr(cprpllc, 0x20000238);
+ mtcpr(cprplld, 0x03010400);
+ mtcpr(cprprimad, 0x03050a0a);
+ mtcpr(cprperc0, 0x00000000);
+ mtcpr(cprperd0, 0x070a0707); /* SPI clk div. eq. OPB clk div. */
+ mtcpr(cprperd1, 0x07323200);
+ mtcpr(cprclkupd, 0x40000000);
+}
+
+#elif defined(PLLMR0_333_166_83)
+
+void board_pll_init_f(void)
+{
+ /*
+ * set PLL clocks based on input sysclk is 33M
+ *
+ * ----------------------------------
+ * | CLK | FREQ (MHz) | DIV RATIO |
+ * ----------------------------------
+ * | CPU | 333.33 | 2 |
+ * | PLB | 166.66 | 4 (0x04)|
+ * | OPB | 83.33 | 8 (0x08)|
+ * | EBC | 83.33 | 8 (0x08)|
+ * | SPI | 83.33 | 8 (0x08)|
+ * | UART0 | 16.66 | 5 (0x05)|
+ * | UART1 | 16.66 | 5 (0x05)|
+ * | DAC | ???? | 166 (0xA6)|
+ * | ADC | ???? | 166 (0xA6)|
+ * | PWM | 41.66 | 3 (0x03)|
+ * | EMAC | ???? | 3 (0x03)|
+ * -----------------------------------
+ */
+
+ /* Initialize PLL */
+ mtcpr(cprpllc, 0x0000033C);
+ mtcpr(cprplld, 0x0a010000);
+ mtcpr(cprprimad, 0x02040808);
+ mtcpr(cprperd0, 0x02080505); /* SPI clk div. eq. OPB clk div. */
+ mtcpr(cprperd1, 0xA6A60300);
+ mtcpr(cprclkupd, 0x40000000);
+}
+
+#elif defined(PLLMR0_100_100_12)
+
+void board_pll_init_f(void)
+{
+ /*
+ * set PLL clocks based on input sysclk is 33M
+ *
+ * ----------------------
+ * | CLK | FREQ (MHz) |
+ * ----------------------
+ * | CPU | 100.00 |
+ * | PLB | 100.00 |
+ * | OPB | 12.00 |
+ * | EBC | 49.00 |
+ * ----------------------
+ */
+
+ /* Initialize PLL */
+ mtcpr(cprpllc, 0x000003BC);
+ mtcpr(cprplld, 0x06060600);
+ mtcpr(cprprimad, 0x02020004);
+ mtcpr(cprperd0, 0x04002828); /* SPI clk div. eq. OPB clk div. */
+ mtcpr(cprperd1, 0xC8C81600);
+ mtcpr(cprclkupd, 0x40000000);
+}
+#endif /* CPU_<speed>_405EZ */
+
+#if defined(CONFIG_NAND_SPL) || defined(CONFIG_SPI_SPL)
+/*
+ * Get timebase clock frequency
+ */
+unsigned long get_tbclk (void)
+{
+ unsigned long cpr_plld;
+ unsigned long cpr_primad;
+ unsigned long primad_cpudv;
+ unsigned long pllFbkDiv;
+ unsigned long freqProcessor;
+
+ /*
+ * Read PLL Mode registers
+ */
+ mfcpr(cprplld, cpr_plld);
+
+ /*
+ * Read CPR_PRIMAD register
+ */
+ mfcpr(cprprimad, cpr_primad);
+
+ /*
+ * Determine CPU clock frequency
+ */
+ primad_cpudv = ((cpr_primad & PRIMAD_CPUDV_MASK) >> 24);
+ if (primad_cpudv == 0)
+ primad_cpudv = 16;
+
+ /*
+ * Determine FBK_DIV.
+ */
+ pllFbkDiv = ((cpr_plld & PLLD_FBDV_MASK) >> 24);
+ if (pllFbkDiv == 0)
+ pllFbkDiv = 256;
+
+ freqProcessor = (CONFIG_SYS_CLK_FREQ * pllFbkDiv) / primad_cpudv;
+
+ return (freqProcessor);
+}
+#endif /* defined(CONFIG_NAND_SPL) || defined(CONFIG_SPI_SPL) */