/*
- * Copyright (C) 2007 OpenWrt.org
- * Copyright (C) Gabor Juhos
- *
- * 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.
+ * $Id$
+ *
+ * Copyright (C) 2007 OpenWrt.org
+ * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ *
+ * 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 <linux/types.h>
-#include <linux/autoconf.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
-#include <adm5120_info.h>
-#include <myloader.h>
+#include <asm/mach-adm5120/adm5120_info.h>
+#include <asm/mach-adm5120/adm5120_defs.h>
+#include <asm/mach-adm5120/adm5120_switch.h>
-/* boot loaders specific definitions */
-#define CFE_EPTSEAL 0x43464531 /* CFE1 is the magic number to recognize CFE from other bootloaders */
+unsigned int adm5120_product_code;
+unsigned int adm5120_revision;
+unsigned int adm5120_package;
+unsigned int adm5120_nand_boot;
+unsigned long adm5120_speed;
-
-struct adm5120_info adm5120_info = {
- .cpu_speed = CPU_SPEED_175,
- .cpu_package = CPU_PACKAGE_PQFP,
- .boot_loader = BOOT_LOADER_UNKNOWN,
- .board_type = BOARD_TYPE_UNKNOWN
-};
-
-static char *boot_loader_names[BOOT_LOADER_LAST+1] = {
- [BOOT_LOADER_UNKNOWN] = "Unknown",
- [BOOT_LOADER_CFE] = "CFE",
- [BOOT_LOADER_UBOOT] = "U-Boot",
- [BOOT_LOADER_MYLOADER] = "MyLoader"
-};
+#define SWITCH_READ(r) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))
+#define SWITCH_WRITE(r,v) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))=(v)
/*
- * Boot loader detection routines
+ * CPU settings detection
*/
-static int __init detect_cfe(void)
-{
- /*
- * This method only works, when we are booted directly from the CFE.
- */
- uint32_t cfe_handle = (uint32_t) fw_arg0;
- uint32_t cfe_a1_val = (uint32_t) fw_arg1;
- uint32_t cfe_entry = (uint32_t) fw_arg2;
- uint32_t cfe_seal = (uint32_t) fw_arg3;
-
- /* Check for CFE by finding the CFE magic number */
- if (cfe_seal != CFE_EPTSEAL) {
- /* We are not booted from CFE */
- return 0;
- }
-
- /* cfe_a1_val must be 0, because only one CPU present in the ADM5120 SoC */
- if (cfe_a1_val != 0) {
- return 0;
- }
-
- /* The cfe_handle, and the cfe_entry must be kernel mode addresses */
- if ((cfe_handle < KSEG0) || (cfe_entry < KSEG0)) {
- return 0;
- }
-
- return 1;
-}
-
-static int __init detect_uboot(void)
-{
- /* FIXME: not yet implemented */
- return 0;
-}
+#define CODE_GET_PC(c) ((c) & CODE_PC_MASK)
+#define CODE_GET_REV(c) (((c) >> CODE_REV_SHIFT) & CODE_REV_MASK)
+#define CODE_GET_PK(c) (((c) >> CODE_PK_SHIFT) & CODE_PK_MASK)
+#define CODE_GET_CLKS(c) (((c) >> CODE_CLKS_SHIFT) & CODE_CLKS_MASK)
+#define CODE_GET_NAB(c) (((c) & CODE_NAB) != 0)
-static int __init detect_myloader(void)
+void adm5120_ndelay(u32 ns)
{
- struct mylo_system_params *sysp;
- struct mylo_board_params *boardp;
- struct mylo_partition_table *parts;
+ u32 t;
- sysp = (struct mylo_system_params *)(MYLO_MIPS_SYS_PARAMS);
- boardp = (struct mylo_board_params *)(MYLO_MIPS_BOARD_PARAMS);
- parts = (struct mylo_partition_table *)(MYLO_MIPS_PARTITIONS);
+ SWITCH_WRITE(SWITCH_REG_TIMER, TIMER_PERIOD_DEFAULT);
+ SWITCH_WRITE(SWITCH_REG_TIMER_INT, (TIMER_INT_TOS | TIMER_INT_TOM));
- /* Check for some magic numbers */
- if ((sysp->magic != MYLO_MAGIC_SYS_PARAMS) ||
- (boardp->magic != MYLO_MAGIC_BOARD_PARAMS) ||
- (parts->magic != MYLO_MAGIC_PARTITIONS))
- return 0;
+ t = (ns+640) / 640;
+ t &= TIMER_PERIOD_MASK;
+ SWITCH_WRITE(SWITCH_REG_TIMER, t | TIMER_TE);
- return 1;
-}
+ /* wait until the timer expires */
+ do {
+ t = SWITCH_READ(SWITCH_REG_TIMER_INT);
+ } while ((t & TIMER_INT_TOS) == 0);
-static int __init detect_bootloader(void)
-{
- if (detect_cfe())
- return BOOT_LOADER_CFE;
-
- if (detect_uboot())
- return BOOT_LOADER_UBOOT;
-
- if (detect_myloader())
- return BOOT_LOADER_MYLOADER;
-
- return BOOT_LOADER_UNKNOWN;
-}
-
-void __init adm5120_info_show(void)
-{
- printk("adm5120: boot loader is %s\n", boot_loader_names[adm5120_info.boot_loader]);
+ /* leave the timer disabled */
+ SWITCH_WRITE(SWITCH_REG_TIMER, TIMER_PERIOD_DEFAULT);
+ SWITCH_WRITE(SWITCH_REG_TIMER_INT, (TIMER_INT_TOS | TIMER_INT_TOM));
}
-void __init adm5120_info_init(void)
+void __init adm5120_soc_init(void)
{
- adm5120_info.boot_loader = detect_bootloader();
-
- adm5120_info_show();
+ u32 code;
+ u32 clks;
+
+ code = SWITCH_READ(SWITCH_REG_CODE);
+
+ adm5120_product_code = CODE_GET_PC(code);
+ adm5120_revision = CODE_GET_REV(code);
+ adm5120_package = (CODE_GET_PK(code) == CODE_PK_BGA) ?
+ ADM5120_PACKAGE_BGA : ADM5120_PACKAGE_PQFP;
+ adm5120_nand_boot = CODE_GET_NAB(code);
+
+ clks = CODE_GET_CLKS(code);
+ adm5120_speed = ADM5120_SPEED_175;
+ if (clks & 1)
+ adm5120_speed += 25000000;
+ if (clks & 2)
+ adm5120_speed += 50000000;
}
projects / openwrt.git / blobdiff