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cc35b67668
This patch add the Chroma platform to WSP/PowerEN, which is a PCIe card (a defconfig is included). The card includes an H8 service processor that is used to manage the card. The H8 is connected over the second serial UART on the PowerEN chip so this patch includes a simple 16550 driver to enable communication, mostly for "power off" and "rebooting". This patch also includes a, WSP specific, "halt" method that will shut of all A2 cores but still leave power on at the chip level. This is desirable, especially if you wish to interrogate the chip with a hardware probe after the halt. Signed-off-by: Jimi Xenidis <jimix@pobox.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/*
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* Copyright 2008-2011, IBM Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/of.h>
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#include <linux/smp.h>
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#include <linux/time.h>
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#include <asm/machdep.h>
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#include <asm/system.h>
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#include <asm/udbg.h>
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#include "ics.h"
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#include "wsp.h"
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void __init chroma_setup_arch(void)
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{
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wsp_setup_arch();
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wsp_setup_h8();
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}
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static int __init chroma_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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if (!of_flat_dt_is_compatible(root, "ibm,wsp-chroma"))
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return 0;
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return 1;
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}
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define_machine(chroma_md) {
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.name = "Chroma PCIe",
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.probe = chroma_probe,
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.setup_arch = chroma_setup_arch,
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.restart = wsp_h8_restart,
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.power_off = wsp_h8_power_off,
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.halt = wsp_halt,
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.calibrate_decr = generic_calibrate_decr,
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.init_IRQ = wsp_setup_irq,
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.progress = udbg_progress,
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.power_save = book3e_idle,
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};
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machine_arch_initcall(chroma_md, wsp_probe_devices);
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