This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / mips / sibyte / bcm1480 / setup.c

diff --git a/arch/mips/sibyte/bcm1480/setup.c b/arch/mips/sibyte/bcm1480/setup.c
new file mode 100644 (file)
index 0000000..d90a0b8
--- /dev/null
+++ b/arch/mips/sibyte/bcm1480/setup.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2000,2001,2002,2003,2004 Broadcom Corporation
+ *
+ * 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 <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mipsregs.h>
+#include <asm/io.h>
+#include <asm/sibyte/sb1250.h>
+
+#include <asm/sibyte/bcm1480_regs.h>
+#include <asm/sibyte/bcm1480_scd.h>
+#include <asm/sibyte/sb1250_scd.h>
+
+unsigned int sb1_pass;
+unsigned int soc_pass;
+unsigned int soc_type;
+unsigned int periph_rev;
+unsigned int zbbus_mhz;
+
+static unsigned int part_type;
+
+static char *soc_str;
+static char *pass_str;
+
+static inline int setup_bcm1x80_bcm1x55(void);
+
+/* Setup code likely to be common to all SiByte platforms */
+
+static inline int sys_rev_decode(void)
+{
+       int ret = 0;
+
+       switch (soc_type) {
+           case K_SYS_SOC_TYPE_BCM1x80:
+               if (part_type == K_SYS_PART_BCM1480)
+                   soc_str = "BCM1480";
+               else if (part_type == K_SYS_PART_BCM1280)
+                   soc_str = "BCM1280";
+               else
+                   soc_str = "BCM1x80";
+               ret = setup_bcm1x80_bcm1x55();
+               break;
+
+           case K_SYS_SOC_TYPE_BCM1x55:
+               if (part_type == K_SYS_PART_BCM1455)
+                   soc_str = "BCM1455";
+               else if (part_type == K_SYS_PART_BCM1255)
+                   soc_str = "BCM1255";
+               else
+                   soc_str = "BCM1x55";
+               ret = setup_bcm1x80_bcm1x55();
+               break;
+
+           default:
+               prom_printf("Unknown part type %x\n", part_type);
+               ret = 1;
+               break;
+       }
+       return ret;
+}
+
+static inline int setup_bcm1x80_bcm1x55(void)
+{
+       int ret = 0;
+
+       switch (soc_pass) {
+           case K_SYS_REVISION_BCM1480_S0:
+               periph_rev = 1;
+               pass_str = "S0 (pass1)";
+               break;
+           case K_SYS_REVISION_BCM1480_A1:
+               periph_rev = 1;
+               pass_str = "A1 (pass1)";
+               break;
+           case K_SYS_REVISION_BCM1480_A2:
+               periph_rev = 1;
+               pass_str = "A2 (pass1)";
+               break;
+           case K_SYS_REVISION_BCM1480_A3:
+               periph_rev = 1;
+               pass_str = "A3 (pass1)";
+               break;
+           case K_SYS_REVISION_BCM1480_B0:
+               periph_rev = 1;
+               pass_str = "B0 (pass2)";
+               break;
+           default:
+               prom_printf("Unknown %s rev %x\n", soc_str, soc_pass);
+               periph_rev = 1;
+               pass_str = "Unknown Revision";
+               break;
+       }
+       return ret;
+}
+
+void bcm1480_setup(void)
+{
+       uint64_t sys_rev;
+       int plldiv;
+
+       sb1_pass = read_c0_prid() & 0xff;
+       sys_rev = __raw_readq(IOADDR(A_SCD_SYSTEM_REVISION));
+       soc_type = SYS_SOC_TYPE(sys_rev);
+       part_type = G_SYS_PART(sys_rev);
+       soc_pass = G_SYS_REVISION(sys_rev);
+
+       if (sys_rev_decode()) {
+               prom_printf("Restart after failure to identify SiByte chip\n");
+               machine_restart(NULL);
+       }
+
+       plldiv = G_BCM1480_SYS_PLL_DIV(__raw_readq(IOADDR(A_SCD_SYSTEM_CFG)));
+       zbbus_mhz = ((plldiv >> 1) * 50) + ((plldiv & 1) * 25);
+
+       prom_printf("Broadcom SiByte %s %s @ %d MHz (SB-1A rev %d)\n",
+                   soc_str, pass_str, zbbus_mhz * 2, sb1_pass);
+       prom_printf("Board type: %s\n", get_system_type());
+}