diff options
Diffstat (limited to 'arch/frv/kernel/setup.c')
| -rw-r--r-- | arch/frv/kernel/setup.c | 1178 |
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 |