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-rw-r--r--arch/frv/kernel/setup.c1178
1 files changed, 0 insertions, 1178 deletions
diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c
deleted file mode 100644
index 9f4a9a607dbe..000000000000
--- a/arch/frv/kernel/setup.c
+++ /dev/null
@@ -1,1178 +0,0 @@
-/* setup.c: FRV specific setup
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/setup.c
- *
- * 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.
- */
-
-#include <generated/utsrelease.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/fb.h>
-#include <linux/console.h>
-#include <linux/genhd.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/major.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/seq_file.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/serial_reg.h>
-#include <linux/serial_8250.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/sections.h>
-#include <asm/pgalloc.h>
-#include <asm/busctl-regs.h>
-#include <asm/serial-regs.h>
-#include <asm/timer-regs.h>
-#include <asm/irc-regs.h>
-#include <asm/spr-regs.h>
-#include <asm/mb-regs.h>
-#include <asm/mb93493-regs.h>
-#include <asm/gdb-stub.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_BLK_DEV_INITRD
-#include <asm/pgtable.h>
-#endif
-
-#include "local.h"
-
-#ifdef CONFIG_MB93090_MB00
-static void __init mb93090_display(void);
-#endif
-#ifdef CONFIG_MMU
-static void __init setup_linux_memory(void);
-#else
-static void __init setup_uclinux_memory(void);
-#endif
-
-#ifdef CONFIG_MB93090_MB00
-static char __initdata mb93090_banner[] = "FJ/RH FR-V Linux";
-static char __initdata mb93090_version[] = UTS_RELEASE;
-
-int __nongprelbss mb93090_mb00_detected;
-#endif
-
-const char __frv_unknown_system[] = "unknown";
-const char __frv_mb93091_cb10[] = "mb93091-cb10";
-const char __frv_mb93091_cb11[] = "mb93091-cb11";
-const char __frv_mb93091_cb30[] = "mb93091-cb30";
-const char __frv_mb93091_cb41[] = "mb93091-cb41";
-const char __frv_mb93091_cb60[] = "mb93091-cb60";
-const char __frv_mb93091_cb70[] = "mb93091-cb70";
-const char __frv_mb93091_cb451[] = "mb93091-cb451";
-const char __frv_mb93090_mb00[] = "mb93090-mb00";
-
-const char __frv_mb93493[] = "mb93493";
-
-const char __frv_mb93093[] = "mb93093";
-
-static const char *__nongprelbss cpu_series;
-static const char *__nongprelbss cpu_core;
-static const char *__nongprelbss cpu_silicon;
-static const char *__nongprelbss cpu_mmu;
-static const char *__nongprelbss cpu_system;
-static const char *__nongprelbss cpu_board1;
-static const char *__nongprelbss cpu_board2;
-
-static unsigned long __nongprelbss cpu_psr_all;
-static unsigned long __nongprelbss cpu_hsr0_all;
-
-unsigned long __nongprelbss pdm_suspend_mode;
-
-unsigned long __nongprelbss rom_length;
-unsigned long __nongprelbss memory_start;
-unsigned long __nongprelbss memory_end;
-
-unsigned long __nongprelbss dma_coherent_mem_start;
-unsigned long __nongprelbss dma_coherent_mem_end;
-
-unsigned long __initdata __sdram_old_base;
-unsigned long __initdata num_mappedpages;
-
-char __initdata command_line[COMMAND_LINE_SIZE];
-char __initdata redboot_command_line[COMMAND_LINE_SIZE];
-
-#ifdef CONFIG_PM
-#define __pminit
-#define __pminitdata
-#define __pminitconst
-#else
-#define __pminit __init
-#define __pminitdata __initdata
-#define __pminitconst __initconst
-#endif
-
-struct clock_cmode {
- uint8_t xbus, sdram, corebus, core, dsu;
-};
-
-#define _frac(N,D) ((N)<<4 | (D))
-#define _x0_16 _frac(1,6)
-#define _x0_25 _frac(1,4)
-#define _x0_33 _frac(1,3)
-#define _x0_375 _frac(3,8)
-#define _x0_5 _frac(1,2)
-#define _x0_66 _frac(2,3)
-#define _x0_75 _frac(3,4)
-#define _x1 _frac(1,1)
-#define _x1_5 _frac(3,2)
-#define _x2 _frac(2,1)
-#define _x3 _frac(3,1)
-#define _x4 _frac(4,1)
-#define _x4_5 _frac(9,2)
-#define _x6 _frac(6,1)
-#define _x8 _frac(8,1)
-#define _x9 _frac(9,1)
-
-int __nongprelbss clock_p0_current;
-int __nongprelbss clock_cm_current;
-int __nongprelbss clock_cmode_current;
-#ifdef CONFIG_PM
-int __nongprelbss clock_cmodes_permitted;
-unsigned long __nongprelbss clock_bits_settable;
-#endif
-
-static struct clock_cmode __pminitdata undef_clock_cmode = { _x1, _x1, _x1, _x1, _x1 };
-
-static struct clock_cmode __pminitdata clock_cmodes_fr401_fr403[16] = {
- [4] = { _x1, _x1, _x2, _x2, _x0_25 },
- [5] = { _x1, _x2, _x4, _x4, _x0_5 },
- [8] = { _x1, _x1, _x1, _x2, _x0_25 },
- [9] = { _x1, _x2, _x2, _x4, _x0_5 },
- [11] = { _x1, _x4, _x4, _x8, _x1 },
- [12] = { _x1, _x1, _x2, _x4, _x0_5 },
- [13] = { _x1, _x2, _x4, _x8, _x1 },
-};
-
-static struct clock_cmode __pminitdata clock_cmodes_fr405[16] = {
- [0] = { _x1, _x1, _x1, _x1, _x0_5 },
- [1] = { _x1, _x1, _x1, _x3, _x0_25 },
- [2] = { _x1, _x1, _x2, _x6, _x0_5 },
- [3] = { _x1, _x2, _x2, _x6, _x0_5 },
- [4] = { _x1, _x1, _x2, _x2, _x0_16 },
- [8] = { _x1, _x1, _x1, _x2, _x0_16 },
- [9] = { _x1, _x2, _x2, _x4, _x0_33 },
- [12] = { _x1, _x1, _x2, _x4, _x0_33 },
- [14] = { _x1, _x3, _x3, _x9, _x0_75 },
- [15] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 },
-
-#define CLOCK_CMODES_PERMITTED_FR405 0xd31f
-};
-
-static struct clock_cmode __pminitdata clock_cmodes_fr555[16] = {
- [0] = { _x1, _x2, _x2, _x4, _x0_33 },
- [1] = { _x1, _x3, _x3, _x6, _x0_5 },
- [2] = { _x1, _x2, _x4, _x8, _x0_66 },
- [3] = { _x1, _x1_5, _x3, _x6, _x0_5 },
- [4] = { _x1, _x3, _x3, _x9, _x0_75 },
- [5] = { _x1, _x2, _x2, _x6, _x0_5 },
- [6] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 },
-};
-
-static const struct clock_cmode __pminitconst *clock_cmodes;
-static int __pminitdata clock_doubled;
-
-static struct uart_port __pminitdata __frv_uart0 = {
- .uartclk = 0,
- .membase = (char *) UART0_BASE,
- .irq = IRQ_CPU_UART0,
- .regshift = 3,
- .iotype = UPIO_MEM,
- .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
-};
-
-static struct uart_port __pminitdata __frv_uart1 = {
- .uartclk = 0,
- .membase = (char *) UART1_BASE,
- .irq = IRQ_CPU_UART1,
- .regshift = 3,
- .iotype = UPIO_MEM,
- .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
-};
-
-#if 0
-static void __init printk_xampr(unsigned long ampr, unsigned long amlr, char i_d, int n)
-{
- unsigned long phys, virt, cxn, size;
-
-#ifdef CONFIG_MMU
- virt = amlr & 0xffffc000;
- cxn = amlr & 0x3fff;
-#else
- virt = ampr & 0xffffc000;
- cxn = 0;
-#endif
- phys = ampr & xAMPRx_PPFN;
- size = 1 << (((ampr & xAMPRx_SS) >> 4) + 17);
-
- printk("%cAMPR%d: va %08lx-%08lx [pa %08lx] %c%c%c%c [cxn:%04lx]\n",
- i_d, n,
- virt, virt + size - 1,
- phys,
- ampr & xAMPRx_S ? 'S' : '-',
- ampr & xAMPRx_C ? 'C' : '-',
- ampr & DAMPRx_WP ? 'W' : '-',
- ampr & xAMPRx_V ? 'V' : '-',
- cxn
- );
-}
-#endif
-
-/*****************************************************************************/
-/*
- * dump the memory map
- */
-static void __init dump_memory_map(void)
-{
-
-#if 0
- /* dump the protection map */
- printk_xampr(__get_IAMPR(0), __get_IAMLR(0), 'I', 0);
- printk_xampr(__get_IAMPR(1), __get_IAMLR(1), 'I', 1);
- printk_xampr(__get_IAMPR(2), __get_IAMLR(2), 'I', 2);
- printk_xampr(__get_IAMPR(3), __get_IAMLR(3), 'I', 3);
- printk_xampr(__get_IAMPR(4), __get_IAMLR(4), 'I', 4);
- printk_xampr(__get_IAMPR(5), __get_IAMLR(5), 'I', 5);
- printk_xampr(__get_IAMPR(6), __get_IAMLR(6), 'I', 6);
- printk_xampr(__get_IAMPR(7), __get_IAMLR(7), 'I', 7);
- printk_xampr(__get_IAMPR(8), __get_IAMLR(8), 'I', 8);
- printk_xampr(__get_IAMPR(9), __get_IAMLR(9), 'i', 9);
- printk_xampr(__get_IAMPR(10), __get_IAMLR(10), 'I', 10);
- printk_xampr(__get_IAMPR(11), __get_IAMLR(11), 'I', 11);
- printk_xampr(__get_IAMPR(12), __get_IAMLR(12), 'I', 12);
- printk_xampr(__get_IAMPR(13), __get_IAMLR(13), 'I', 13);
- printk_xampr(__get_IAMPR(14), __get_IAMLR(14), 'I', 14);
- printk_xampr(__get_IAMPR(15), __get_IAMLR(15), 'I', 15);
-
- printk_xampr(__get_DAMPR(0), __get_DAMLR(0), 'D', 0);
- printk_xampr(__get_DAMPR(1), __get_DAMLR(1), 'D', 1);
- printk_xampr(__get_DAMPR(2), __get_DAMLR(2), 'D', 2);
- printk_xampr(__get_DAMPR(3), __get_DAMLR(3), 'D', 3);
- printk_xampr(__get_DAMPR(4), __get_DAMLR(4), 'D', 4);
- printk_xampr(__get_DAMPR(5), __get_DAMLR(5), 'D', 5);
- printk_xampr(__get_DAMPR(6), __get_DAMLR(6), 'D', 6);
- printk_xampr(__get_DAMPR(7), __get_DAMLR(7), 'D', 7);
- printk_xampr(__get_DAMPR(8), __get_DAMLR(8), 'D', 8);
- printk_xampr(__get_DAMPR(9), __get_DAMLR(9), 'D', 9);
- printk_xampr(__get_DAMPR(10), __get_DAMLR(10), 'D', 10);
- printk_xampr(__get_DAMPR(11), __get_DAMLR(11), 'D', 11);
- printk_xampr(__get_DAMPR(12), __get_DAMLR(12), 'D', 12);
- printk_xampr(__get_DAMPR(13), __get_DAMLR(13), 'D', 13);
- printk_xampr(__get_DAMPR(14), __get_DAMLR(14), 'D', 14);
- printk_xampr(__get_DAMPR(15), __get_DAMLR(15), 'D', 15);
-#endif
-
-#if 0
- /* dump the bus controller registers */
- printk("LGCR: %08lx\n", __get_LGCR());
- printk("Master: %08lx-%08lx CR=%08lx\n",
- __get_LEMBR(), __get_LEMBR() + __get_LEMAM(),
- __get_LMAICR());
-
- int loop;
- for (loop = 1; loop <= 7; loop++) {
- unsigned long lcr = __get_LCR(loop), lsbr = __get_LSBR(loop);
- printk("CS#%d: %08lx-%08lx %c%c%c%c%c%c%c%c%c\n",
- loop,
- lsbr, lsbr + __get_LSAM(loop),
- lcr & 0x80000000 ? 'r' : '-',
- lcr & 0x40000000 ? 'w' : '-',
- lcr & 0x08000000 ? 'b' : '-',
- lcr & 0x04000000 ? 'B' : '-',
- lcr & 0x02000000 ? 'C' : '-',
- lcr & 0x01000000 ? 'D' : '-',
- lcr & 0x00800000 ? 'W' : '-',
- lcr & 0x00400000 ? 'R' : '-',
- (lcr & 0x00030000) == 0x00000000 ? '4' :
- (lcr & 0x00030000) == 0x00010000 ? '2' :
- (lcr & 0x00030000) == 0x00020000 ? '1' :
- '-'
- );
- }
-#endif
-
-#if 0
- printk("\n");
-#endif
-} /* end dump_memory_map() */
-
-/*****************************************************************************/
-/*
- * attempt to detect a VDK motherboard and DAV daughter board on an MB93091 system
- */
-#ifdef CONFIG_MB93091_VDK
-static void __init detect_mb93091(void)
-{
-#ifdef CONFIG_MB93090_MB00
- /* Detect CB70 without motherboard */
- if (!(cpu_system == __frv_mb93091_cb70 && ((*(unsigned short *)0xffc00030) & 0x100))) {
- cpu_board1 = __frv_mb93090_mb00;
- mb93090_mb00_detected = 1;
- }
-#endif
-
-#ifdef CONFIG_FUJITSU_MB93493
- cpu_board2 = __frv_mb93493;
-#endif
-
-} /* end detect_mb93091() */
-#endif
-
-/*****************************************************************************/
-/*
- * determine the CPU type and set appropriate parameters
- *
- * Family Series CPU Core Silicon Imple Vers
- * ----------------------------------------------------------
- * FR-V --+-> FR400 --+-> FR401 --+-> MB93401 02 00 [1]
- * | | |
- * | | +-> MB93401/A 02 01
- * | | |
- * | | +-> MB93403 02 02
- * | |
- * | +-> FR405 ----> MB93405 04 00
- * |
- * +-> FR450 ----> FR451 ----> MB93451 05 00
- * |
- * +-> FR500 ----> FR501 --+-> MB93501 01 01 [2]
- * | |
- * | +-> MB93501/A 01 02
- * |
- * +-> FR550 --+-> FR551 ----> MB93555 03 01
- *
- * [1] The MB93401 is an obsolete CPU replaced by the MB93401A
- * [2] The MB93501 is an obsolete CPU replaced by the MB93501A
- *
- * Imple is PSR(Processor Status Register)[31:28].
- * Vers is PSR(Processor Status Register)[27:24].
- *
- * A "Silicon" consists of CPU core and some on-chip peripherals.
- */
-static void __init determine_cpu(void)
-{
- unsigned long hsr0 = __get_HSR(0);
- unsigned long psr = __get_PSR();
-
- /* work out what selectable services the CPU supports */
- __set_PSR(psr | PSR_EM | PSR_EF | PSR_CM | PSR_NEM);
- cpu_psr_all = __get_PSR();
- __set_PSR(psr);
-
- __set_HSR(0, hsr0 | HSR0_GRLE | HSR0_GRHE | HSR0_FRLE | HSR0_FRHE);
- cpu_hsr0_all = __get_HSR(0);
- __set_HSR(0, hsr0);
-
- /* derive other service specs from the CPU type */
- cpu_series = "unknown";
- cpu_core = "unknown";
- cpu_silicon = "unknown";
- cpu_mmu = "Prot";
- cpu_system = __frv_unknown_system;
- clock_cmodes = NULL;
- clock_doubled = 0;
-#ifdef CONFIG_PM
- clock_bits_settable = CLOCK_BIT_CM_H | CLOCK_BIT_CM_M | CLOCK_BIT_P0;
-#endif
-
- switch (PSR_IMPLE(psr)) {
- case PSR_IMPLE_FR401:
- cpu_series = "fr400";
- cpu_core = "fr401";
- pdm_suspend_mode = HSR0_PDM_PLL_RUN;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR401_MB93401:
- cpu_silicon = "mb93401";
- cpu_system = __frv_mb93091_cb10;
- clock_cmodes = clock_cmodes_fr401_fr403;
- clock_doubled = 1;
- break;
- case PSR_VERSION_FR401_MB93401A:
- cpu_silicon = "mb93401/A";
- cpu_system = __frv_mb93091_cb11;
- clock_cmodes = clock_cmodes_fr401_fr403;
- break;
- case PSR_VERSION_FR401_MB93403:
- cpu_silicon = "mb93403";
-#ifndef CONFIG_MB93093_PDK
- cpu_system = __frv_mb93091_cb30;
-#else
- cpu_system = __frv_mb93093;
-#endif
- clock_cmodes = clock_cmodes_fr401_fr403;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR405:
- cpu_series = "fr400";
- cpu_core = "fr405";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR405_MB93405:
- cpu_silicon = "mb93405";
- cpu_system = __frv_mb93091_cb60;
- clock_cmodes = clock_cmodes_fr405;
-#ifdef CONFIG_PM
- clock_bits_settable |= CLOCK_BIT_CMODE;
- clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
-#endif
-
- /* the FPGA on the CB70 has extra registers
- * - it has 0x0046 in the VDK_ID FPGA register at 0x1a0, which is
- * how we tell the difference between it and a CB60
- */
- if (*(volatile unsigned short *) 0xffc001a0 == 0x0046)
- cpu_system = __frv_mb93091_cb70;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR451:
- cpu_series = "fr450";
- cpu_core = "fr451";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-#ifdef CONFIG_PM
- clock_bits_settable |= CLOCK_BIT_CMODE;
- clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
-#endif
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR451_MB93451:
- cpu_silicon = "mb93451";
- cpu_mmu = "Prot, SAT, xSAT, DAT";
- cpu_system = __frv_mb93091_cb451;
- clock_cmodes = clock_cmodes_fr405;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR501:
- cpu_series = "fr500";
- cpu_core = "fr501";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR501_MB93501: cpu_silicon = "mb93501"; break;
- case PSR_VERSION_FR501_MB93501A: cpu_silicon = "mb93501/A"; break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR551:
- cpu_series = "fr550";
- cpu_core = "fr551";
- pdm_suspend_mode = HSR0_PDM_PLL_RUN;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR551_MB93555:
- cpu_silicon = "mb93555";
- cpu_mmu = "Prot, SAT";
- cpu_system = __frv_mb93091_cb41;
- clock_cmodes = clock_cmodes_fr555;
- clock_doubled = 1;
- break;
- default:
- break;
- }
- break;
-
- default:
- break;
- }
-
- printk("- Series:%s CPU:%s Silicon:%s\n",
- cpu_series, cpu_core, cpu_silicon);
-
-#ifdef CONFIG_MB93091_VDK
- detect_mb93091();
-#endif
-
-#if defined(CONFIG_MB93093_PDK) && defined(CONFIG_FUJITSU_MB93493)
- cpu_board2 = __frv_mb93493;
-#endif
-
-} /* end determine_cpu() */
-
-/*****************************************************************************/
-/*
- * calculate the bus clock speed
- */
-void __pminit determine_clocks(int verbose)
-{
- const struct clock_cmode *mode, *tmode;
- unsigned long clkc, psr, quot;
-
- clkc = __get_CLKC();
- psr = __get_PSR();
-
- clock_p0_current = !!(clkc & CLKC_P0);
- clock_cm_current = clkc & CLKC_CM;
- clock_cmode_current = (clkc & CLKC_CMODE) >> CLKC_CMODE_s;
-
- if (verbose)
- printk("psr=%08lx hsr0=%08lx clkc=%08lx\n", psr, __get_HSR(0), clkc);
-
- /* the CB70 has some alternative ways of setting the clock speed through switches accessed
- * through the FPGA. */
- if (cpu_system == __frv_mb93091_cb70) {
- unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;
-
- if (clkswr & 0x1000)
- __clkin_clock_speed_HZ = 60000000UL;
- else
- __clkin_clock_speed_HZ =
- ((clkswr >> 8) & 0xf) * 10000000 +
- ((clkswr >> 4) & 0xf) * 1000000 +
- ((clkswr ) & 0xf) * 100000;
- }
- /* the FR451 is currently fixed at 24MHz */
- else if (cpu_system == __frv_mb93091_cb451) {
- //__clkin_clock_speed_HZ = 24000000UL; // CB451-FPGA
- unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;
-
- if (clkswr & 0x1000)
- __clkin_clock_speed_HZ = 60000000UL;
- else
- __clkin_clock_speed_HZ =
- ((clkswr >> 8) & 0xf) * 10000000 +
- ((clkswr >> 4) & 0xf) * 1000000 +
- ((clkswr ) & 0xf) * 100000;
- }
- /* otherwise determine the clockspeed from VDK or other registers */
- else {
- __clkin_clock_speed_HZ = __get_CLKIN();
- }
-
- /* look up the appropriate clock relationships table entry */
- mode = &undef_clock_cmode;
- if (clock_cmodes) {
- tmode = &clock_cmodes[(clkc & CLKC_CMODE) >> CLKC_CMODE_s];
- if (tmode->xbus)
- mode = tmode;
- }
-
-#define CLOCK(SRC,RATIO) ((SRC) * (((RATIO) >> 4) & 0x0f) / ((RATIO) & 0x0f))
-
- if (clock_doubled)
- __clkin_clock_speed_HZ <<= 1;
-
- __ext_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->xbus);
- __sdram_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- __dsu_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->dsu);
-
- switch (clkc & CLKC_CM) {
- case 0: /* High */
- __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->corebus);
- __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->core);
- break;
- case 1: /* Medium */
- __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- break;
- case 2: /* Low; not supported */
- case 3: /* UNDEF */
- printk("Unsupported CLKC CM %ld\n", clkc & CLKC_CM);
- panic("Bye");
- }
-
- __res_bus_clock_speed_HZ = __ext_bus_clock_speed_HZ;
- if (clkc & CLKC_P0)
- __res_bus_clock_speed_HZ >>= 1;
-
- if (verbose) {
- printk("CLKIN: %lu.%3.3luMHz\n",
- __clkin_clock_speed_HZ / 1000000,
- (__clkin_clock_speed_HZ / 1000) % 1000);
-
- printk("CLKS:"
- " ext=%luMHz res=%luMHz sdram=%luMHz cbus=%luMHz core=%luMHz dsu=%luMHz\n",
- __ext_bus_clock_speed_HZ / 1000000,
- __res_bus_clock_speed_HZ / 1000000,
- __sdram_clock_speed_HZ / 1000000,
- __core_bus_clock_speed_HZ / 1000000,
- __core_clock_speed_HZ / 1000000,
- __dsu_clock_speed_HZ / 1000000
- );
- }
-
- /* calculate the number of __delay() loop iterations per sec (2 insn loop) */
- __delay_loops_MHz = __core_clock_speed_HZ / (1000000 * 2);
-
- /* set the serial prescaler */
- __serial_clock_speed_HZ = __res_bus_clock_speed_HZ;
- quot = 1;
- while (__serial_clock_speed_HZ / quot / 16 / 65536 > 3000)
- quot += 1;
-
- /* double the divisor if P0 is clear, so that if/when P0 is set, it's still achievable
- * - we have to be careful - dividing too much can mean we can't get 115200 baud
- */
- if (__serial_clock_speed_HZ > 32000000 && !(clkc & CLKC_P0))
- quot <<= 1;
-
- __serial_clock_speed_HZ /= quot;
- __frv_uart0.uartclk = __serial_clock_speed_HZ;
- __frv_uart1.uartclk = __serial_clock_speed_HZ;
-
- if (verbose)
- printk(" uart=%luMHz\n", __serial_clock_speed_HZ / 1000000 * quot);
-
- while (!(__get_UART0_LSR() & UART_LSR_TEMT))
- continue;
-
- while (!(__get_UART1_LSR() & UART_LSR_TEMT))
- continue;
-
- __set_UCPVR(quot);
- __set_UCPSR(0);
-} /* end determine_clocks() */
-
-/*****************************************************************************/
-/*
- * reserve some DMA consistent memory
- */
-#ifdef CONFIG_RESERVE_DMA_COHERENT
-static void __init reserve_dma_coherent(void)
-{
- unsigned long ampr;
-
- /* find the first non-kernel memory tile and steal it */
-#define __steal_AMPR(r) \
- if (__get_DAMPR(r) & xAMPRx_V) { \
- ampr = __get_DAMPR(r); \
- __set_DAMPR(r, ampr | xAMPRx_S | xAMPRx_C); \
- __set_IAMPR(r, 0); \
- goto found; \
- }
-
- __steal_AMPR(1);
- __steal_AMPR(2);
- __steal_AMPR(3);
- __steal_AMPR(4);
- __steal_AMPR(5);
- __steal_AMPR(6);
-
- if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551) {
- __steal_AMPR(7);
- __steal_AMPR(8);
- __steal_AMPR(9);
- __steal_AMPR(10);
- __steal_AMPR(11);
- __steal_AMPR(12);
- __steal_AMPR(13);
- __steal_AMPR(14);
- }
-
- /* unable to grant any DMA consistent memory */
- printk("No DMA consistent memory reserved\n");
- return;
-
- found:
- dma_coherent_mem_start = ampr & xAMPRx_PPFN;
- ampr &= xAMPRx_SS;
- ampr >>= 4;
- ampr = 1 << (ampr - 3 + 20);
- dma_coherent_mem_end = dma_coherent_mem_start + ampr;
-
- printk("DMA consistent memory reserved %lx-%lx\n",
- dma_coherent_mem_start, dma_coherent_mem_end);
-
-} /* end reserve_dma_coherent() */
-#endif
-
-/*****************************************************************************/
-/*
- * calibrate the delay loop
- */
-void calibrate_delay(void)
-{
- loops_per_jiffy = __delay_loops_MHz * (1000000 / HZ);
-
- printk("Calibrating delay loop... %lu.%02lu BogoMIPS\n",
- loops_per_jiffy / (500000 / HZ),
- (loops_per_jiffy / (5000 / HZ)) % 100);
-
-} /* end calibrate_delay() */
-
-/*****************************************************************************/
-/*
- * look through the command line for some things we need to know immediately
- */
-static void __init parse_cmdline_early(char *cmdline)
-{
- if (!cmdline)
- return;
-
- while (*cmdline) {
- if (*cmdline == ' ')
- cmdline++;
-
- /* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked
- * out from the SDRAM controller mask register
- */
- if (!strncmp(cmdline, "mem=", 4)) {
- unsigned long long mem_size;
-
- mem_size = memparse(cmdline + 4, &cmdline);
- memory_end = memory_start + mem_size;
- }
-
- while (*cmdline && *cmdline != ' ')
- cmdline++;
- }
-
-} /* end parse_cmdline_early() */
-
-/*****************************************************************************/
-/*
- *
- */
-void __init setup_arch(char **cmdline_p)
-{
-#ifdef CONFIG_MMU
- printk("Linux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
-#else
- printk("uClinux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
-#endif
-
- memcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE);
-
- determine_cpu();
- determine_clocks(1);
-
- /* For printk-directly-beats-on-serial-hardware hack */
- console_set_baud(115200);
-#ifdef CONFIG_GDBSTUB
- gdbstub_set_baud(115200);
-#endif
-
-#ifdef CONFIG_RESERVE_DMA_COHERENT
- reserve_dma_coherent();
-#endif
- dump_memory_map();
-
-#ifdef CONFIG_MB93090_MB00
- if (mb93090_mb00_detected)
- mb93090_display();
-#endif
-
- /* register those serial ports that are available */
-#ifdef CONFIG_FRV_ONCPU_SERIAL
-#ifndef CONFIG_GDBSTUB_UART0
- __reg(UART0_BASE + UART_IER * 8) = 0;
- early_serial_setup(&__frv_uart0);
-#endif
-#ifndef CONFIG_GDBSTUB_UART1
- __reg(UART1_BASE + UART_IER * 8) = 0;
- early_serial_setup(&__frv_uart1);
-#endif
-#endif
-
- /* deal with the command line - RedBoot may have passed one to the kernel */
- memcpy(command_line, boot_command_line, sizeof(command_line));
- *cmdline_p = &command_line[0];
- parse_cmdline_early(command_line);
-
- /* set up the memory description
- * - by now the stack is part of the init task */
- printk("Memory %08lx-%08lx\n", memory_start, memory_end);
-
- BUG_ON(memory_start == memory_end);
-
- init_mm.start_code = (unsigned long) _stext;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
-#if 0 /* DAVIDM - don't set brk just incase someone decides to use it */
- init_mm.brk = (unsigned long) &_end;
-#else
- init_mm.brk = (unsigned long) 0;
-#endif
-
-#ifdef DEBUG
- printk("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
- _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
-#endif
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
-
-#ifdef CONFIG_MMU
- setup_linux_memory();
-#else
- setup_uclinux_memory();
-#endif
-
- /* get kmalloc into gear */
- paging_init();
-
- /* init DMA */
- frv_dma_init();
-#ifdef DEBUG
- printk("Done setup_arch\n");
-#endif
-
- /* start the decrement timer running */
-// asm volatile("movgs %0,timerd" :: "r"(10000000));
-// __set_HSR(0, __get_HSR(0) | HSR0_ETMD);
-
-} /* end setup_arch() */
-
-#if 0
-/*****************************************************************************/
-/*
- *
- */
-static int setup_arch_serial(void)
-{
- /* register those serial ports that are available */
-#ifndef CONFIG_GDBSTUB_UART0
- early_serial_setup(&__frv_uart0);
-#endif
-#ifndef CONFIG_GDBSTUB_UART1
- early_serial_setup(&__frv_uart1);
-#endif
-
- return 0;
-} /* end setup_arch_serial() */
-
-late_initcall(setup_arch_serial);
-#endif
-
-/*****************************************************************************/
-/*
- * set up the memory map for normal MMU linux
- */
-#ifdef CONFIG_MMU
-static void __init setup_linux_memory(void)
-{
- unsigned long bootmap_size, low_top_pfn, kstart, kend, high_mem;
- unsigned long physpages;
-
- kstart = (unsigned long) &__kernel_image_start - PAGE_OFFSET;
- kend = (unsigned long) &__kernel_image_end - PAGE_OFFSET;
-
- kstart = kstart & PAGE_MASK;
- kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;
-
- /* give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map immediately following the kernel image
- */
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- kend >> PAGE_SHIFT, /* map addr */
- memory_start >> PAGE_SHIFT, /* start of RAM */
- memory_end >> PAGE_SHIFT /* end of RAM */
- );
-
- /* pass the memory that the kernel can immediately use over to the bootmem allocator */
- max_mapnr = physpages = (memory_end - memory_start) >> PAGE_SHIFT;
- low_top_pfn = (KERNEL_LOWMEM_END - KERNEL_LOWMEM_START) >> PAGE_SHIFT;
- high_mem = 0;
-
- if (physpages > low_top_pfn) {
-#ifdef CONFIG_HIGHMEM
- high_mem = physpages - low_top_pfn;
-#else
- max_mapnr = physpages = low_top_pfn;
-#endif
- }
- else {
- low_top_pfn = physpages;
- }
-
- min_low_pfn = memory_start >> PAGE_SHIFT;
- max_low_pfn = low_top_pfn;
- max_pfn = memory_end >> PAGE_SHIFT;
-
- num_mappedpages = low_top_pfn;
-
- printk(KERN_NOTICE "%ldMB LOWMEM available.\n", low_top_pfn >> (20 - PAGE_SHIFT));
-
- free_bootmem(memory_start, low_top_pfn << PAGE_SHIFT);
-
-#ifdef CONFIG_HIGHMEM
- if (high_mem)
- printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", high_mem >> (20 - PAGE_SHIFT));
-#endif
-
- /* take back the memory occupied by the kernel image and the bootmem alloc map */
- reserve_bootmem(kstart, kend - kstart + bootmap_size,
- BOOTMEM_DEFAULT);
-
- /* reserve the memory occupied by the initial ramdisk */
-#ifdef CONFIG_BLK_DEV_INITRD
- if (LOADER_TYPE && INITRD_START) {
- if (INITRD_START + INITRD_SIZE <= (low_top_pfn << PAGE_SHIFT)) {
- reserve_bootmem(INITRD_START, INITRD_SIZE,
- BOOTMEM_DEFAULT);
- initrd_start = INITRD_START + PAGE_OFFSET;
- initrd_end = initrd_start + INITRD_SIZE;
- }
- else {
- printk(KERN_ERR
- "initrd extends beyond end of memory (0x%08lx > 0x%08lx)\n"
- "disabling initrd\n",
- INITRD_START + INITRD_SIZE,
- low_top_pfn << PAGE_SHIFT);
- initrd_start = 0;
- }
- }
-#endif
-
-} /* end setup_linux_memory() */
-#endif
-
-/*****************************************************************************/
-/*
- * set up the memory map for uClinux
- */
-#ifndef CONFIG_MMU
-static void __init setup_uclinux_memory(void)
-{
-#ifdef CONFIG_PROTECT_KERNEL
- unsigned long dampr;
-#endif
- unsigned long kend;
- int bootmap_size;
-
- kend = (unsigned long) &__kernel_image_end;
- kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;
-
- /* give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map immediately following the kernel image
- */
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- kend >> PAGE_SHIFT, /* map addr */
- memory_start >> PAGE_SHIFT, /* start of RAM */
- memory_end >> PAGE_SHIFT /* end of RAM */
- );
-
- /* free all the usable memory */
- free_bootmem(memory_start, memory_end - memory_start);
-
- high_memory = (void *) (memory_end & PAGE_MASK);
- max_mapnr = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
-
- min_low_pfn = memory_start >> PAGE_SHIFT;
- max_low_pfn = memory_end >> PAGE_SHIFT;
- max_pfn = max_low_pfn;
-
- /* now take back the bits the core kernel is occupying */
-#ifndef CONFIG_PROTECT_KERNEL
- reserve_bootmem(kend, bootmap_size, BOOTMEM_DEFAULT);
- reserve_bootmem((unsigned long) &__kernel_image_start,
- kend - (unsigned long) &__kernel_image_start,
- BOOTMEM_DEFAULT);
-
-#else
- dampr = __get_DAMPR(0);
- dampr &= xAMPRx_SS;
- dampr = (dampr >> 4) + 17;
- dampr = 1 << dampr;
-
- reserve_bootmem(__get_DAMPR(0) & xAMPRx_PPFN, dampr, BOOTMEM_DEFAULT);
-#endif
-
- /* reserve some memory to do uncached DMA through if requested */
-#ifdef CONFIG_RESERVE_DMA_COHERENT
- if (dma_coherent_mem_start)
- reserve_bootmem(dma_coherent_mem_start,
- dma_coherent_mem_end - dma_coherent_mem_start,
- BOOTMEM_DEFAULT);
-#endif
-
-} /* end setup_uclinux_memory() */
-#endif
-
-/*****************************************************************************/
-/*
- * get CPU information for use by procfs
- */
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- const char *gr, *fr, *fm, *fp, *cm, *nem, *ble;
-#ifdef CONFIG_PM
- const char *sep;
-#endif
-
- gr = cpu_hsr0_all & HSR0_GRHE ? "gr0-63" : "gr0-31";
- fr = cpu_hsr0_all & HSR0_FRHE ? "fr0-63" : "fr0-31";
- fm = cpu_psr_all & PSR_EM ? ", Media" : "";
- fp = cpu_psr_all & PSR_EF ? ", FPU" : "";
- cm = cpu_psr_all & PSR_CM ? ", CCCR" : "";
- nem = cpu_psr_all & PSR_NEM ? ", NE" : "";
- ble = cpu_psr_all & PSR_BE ? "BE" : "LE";
-
- seq_printf(m,
- "CPU-Series:\t%s\n"
- "CPU-Core:\t%s, %s, %s%s%s\n"
- "CPU:\t\t%s\n"
- "MMU:\t\t%s\n"
- "FP-Media:\t%s%s%s\n"
- "System:\t\t%s",
- cpu_series,
- cpu_core, gr, ble, cm, nem,
- cpu_silicon,
- cpu_mmu,
- fr, fm, fp,
- cpu_system);
-
- if (cpu_board1)
- seq_printf(m, ", %s", cpu_board1);
-
- if (cpu_board2)
- seq_printf(m, ", %s", cpu_board2);
-
- seq_printf(m, "\n");
-
-#ifdef CONFIG_PM
- seq_printf(m, "PM-Controls:");
- sep = "\t";
-
- if (clock_bits_settable & CLOCK_BIT_CMODE) {
- seq_printf(m, "%scmode=0x%04hx", sep, clock_cmodes_permitted);
- sep = ", ";
- }
-
- if (clock_bits_settable & CLOCK_BIT_CM) {
- seq_printf(m, "%scm=0x%lx", sep, clock_bits_settable & CLOCK_BIT_CM);
- sep = ", ";
- }
-
- if (clock_bits_settable & CLOCK_BIT_P0) {
- seq_printf(m, "%sp0=0x3", sep);
- sep = ", ";
- }
-
- seq_printf(m, "%ssuspend=0x22\n", sep);
-#endif
-
- seq_printf(m,
- "PM-Status:\tcmode=%d, cm=%d, p0=%d\n",
- clock_cmode_current, clock_cm_current, clock_p0_current);
-
-#define print_clk(TAG, VAR) \
- seq_printf(m, "Clock-" TAG ":\t%lu.%2.2lu MHz\n", VAR / 1000000, (VAR / 10000) % 100)
-
- print_clk("In", __clkin_clock_speed_HZ);
- print_clk("Core", __core_clock_speed_HZ);
- print_clk("SDRAM", __sdram_clock_speed_HZ);
- print_clk("CBus", __core_bus_clock_speed_HZ);
- print_clk("Res", __res_bus_clock_speed_HZ);
- print_clk("Ext", __ext_bus_clock_speed_HZ);
- print_clk("DSU", __dsu_clock_speed_HZ);
-
- seq_printf(m,
- "BogoMips:\t%lu.%02lu\n",
- (loops_per_jiffy * HZ) / 500000, ((loops_per_jiffy * HZ) / 5000) % 100);
-
- return 0;
-} /* end show_cpuinfo() */
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? (void *) 0x12345678 : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
-void arch_gettod(int *year, int *mon, int *day, int *hour,
- int *min, int *sec)
-{
- *year = *mon = *day = *hour = *min = *sec = 0;
-}
-
-/*****************************************************************************/
-/*
- *
- */
-#ifdef CONFIG_MB93090_MB00
-static void __init mb93090_sendlcdcmd(uint32_t cmd)
-{
- unsigned long base = __addr_LCD();
- int loop;
-
- /* request reading of the busy flag */
- __set_LCD(base, LCD_CMD_READ_BUSY);
- __set_LCD(base, LCD_CMD_READ_BUSY & ~LCD_E);
-
- /* wait for the busy flag to become clear */
- for (loop = 10000; loop > 0; loop--)
- if (!(__get_LCD(base) & 0x80))
- break;
-
- /* send the command */
- __set_LCD(base, cmd);
- __set_LCD(base, cmd & ~LCD_E);
-
-} /* end mb93090_sendlcdcmd() */
-
-/*****************************************************************************/
-/*
- * write to the MB93090 LEDs and LCD
- */
-static void __init mb93090_display(void)
-{
- const char *p;
-
- __set_LEDS(0);
-
- /* set up the LCD */
- mb93090_sendlcdcmd(LCD_CMD_CLEAR);
- mb93090_sendlcdcmd(LCD_CMD_FUNCSET(1,1,0));
- mb93090_sendlcdcmd(LCD_CMD_ON(0,0));
- mb93090_sendlcdcmd(LCD_CMD_HOME);
-
- mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(0));
- for (p = mb93090_banner; *p; p++)
- mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));
-
- mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(64));
- for (p = mb93090_version; *p; p++)
- mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));
-
-} /* end mb93090_display() */
-
-#endif // CONFIG_MB93090_MB00