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7b9334215f
The Broadcom BCM3368 Cable Modem SoC is extremely similar to the existing BCM63xx DSL SoCs, in particular BCM6358, therefore little effort in the existing code base is required to get it supported. This patch adds support for the following on-chip peripherals: - two UARTS - GPIO - Ethernet - SPI - PCI - NOR Flash The most noticeable difference with 3368 is that it has its peripheral register at 0xfff8_0000 we check that separately in ioremap.h. Since 3368 is identical to 6358 for its clock and reset bits, we use them verbatim. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: cernekee@gmail.com Cc: jogo@openwrt.org Patchwork: https://patchwork.linux-mips.org/patch/5499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
167 lines
3.6 KiB
C
167 lines
3.6 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/bootmem.h>
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#include <linux/ioport.h>
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#include <linux/pm.h>
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <asm/reboot.h>
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#include <asm/cacheflush.h>
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#include <bcm63xx_board.h>
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#include <bcm63xx_cpu.h>
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#include <bcm63xx_regs.h>
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#include <bcm63xx_io.h>
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void bcm63xx_machine_halt(void)
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{
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printk(KERN_INFO "System halted\n");
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while (1)
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;
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}
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static void bcm6348_a1_reboot(void)
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{
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u32 reg;
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/* soft reset all blocks */
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printk(KERN_INFO "soft-resetting all blocks ...\n");
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reg = bcm_perf_readl(PERF_SOFTRESET_REG);
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reg &= ~SOFTRESET_6348_ALL;
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bcm_perf_writel(reg, PERF_SOFTRESET_REG);
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mdelay(10);
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reg = bcm_perf_readl(PERF_SOFTRESET_REG);
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reg |= SOFTRESET_6348_ALL;
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bcm_perf_writel(reg, PERF_SOFTRESET_REG);
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mdelay(10);
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/* Jump to the power on address. */
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printk(KERN_INFO "jumping to reset vector.\n");
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/* set high vectors (base at 0xbfc00000 */
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set_c0_status(ST0_BEV | ST0_ERL);
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/* run uncached in kseg0 */
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change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
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__flush_cache_all();
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/* remove all wired TLB entries */
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write_c0_wired(0);
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__asm__ __volatile__(
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"jr\t%0"
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:
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: "r" (0xbfc00000));
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while (1)
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;
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}
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void bcm63xx_machine_reboot(void)
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{
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u32 reg, perf_regs[2] = { 0, 0 };
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unsigned int i;
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/* mask and clear all external irq */
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switch (bcm63xx_get_cpu_id()) {
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case BCM3368_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_3368;
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break;
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case BCM6328_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6328;
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break;
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case BCM6338_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6338;
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break;
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case BCM6345_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6345;
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break;
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case BCM6348_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6348;
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break;
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case BCM6358_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6358;
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break;
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case BCM6362_CPU_ID:
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perf_regs[0] = PERF_EXTIRQ_CFG_REG_6362;
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break;
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}
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for (i = 0; i < 2; i++) {
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if (!perf_regs[i])
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break;
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reg = bcm_perf_readl(perf_regs[i]);
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if (BCMCPU_IS_6348()) {
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reg &= ~EXTIRQ_CFG_MASK_ALL_6348;
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reg |= EXTIRQ_CFG_CLEAR_ALL_6348;
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} else {
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reg &= ~EXTIRQ_CFG_MASK_ALL;
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reg |= EXTIRQ_CFG_CLEAR_ALL;
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}
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bcm_perf_writel(reg, perf_regs[i]);
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}
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if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() == 0xa1))
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bcm6348_a1_reboot();
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printk(KERN_INFO "triggering watchdog soft-reset...\n");
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if (BCMCPU_IS_6328()) {
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bcm_wdt_writel(1, WDT_SOFTRESET_REG);
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} else {
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reg = bcm_perf_readl(PERF_SYS_PLL_CTL_REG);
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reg |= SYS_PLL_SOFT_RESET;
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bcm_perf_writel(reg, PERF_SYS_PLL_CTL_REG);
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}
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while (1)
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;
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}
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static void __bcm63xx_machine_reboot(char *p)
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{
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bcm63xx_machine_reboot();
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}
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/*
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* return system type in /proc/cpuinfo
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*/
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const char *get_system_type(void)
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{
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static char buf[128];
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snprintf(buf, sizeof(buf), "bcm63xx/%s (0x%04x/0x%02X)",
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board_get_name(),
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bcm63xx_get_cpu_id(), bcm63xx_get_cpu_rev());
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return buf;
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}
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void __init plat_time_init(void)
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{
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mips_hpt_frequency = bcm63xx_get_cpu_freq() / 2;
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}
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void __init plat_mem_setup(void)
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{
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add_memory_region(0, bcm63xx_get_memory_size(), BOOT_MEM_RAM);
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_machine_halt = bcm63xx_machine_halt;
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_machine_restart = __bcm63xx_machine_reboot;
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pm_power_off = bcm63xx_machine_halt;
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set_io_port_base(0);
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ioport_resource.start = 0;
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ioport_resource.end = ~0;
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board_setup();
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}
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int __init bcm63xx_register_devices(void)
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{
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return board_register_devices();
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}
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arch_initcall(bcm63xx_register_devices);
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