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121 lines
3.7 KiB
Diff
121 lines
3.7 KiB
Diff
From e5810fa0c1bed16fdfb408862a2e17e962ec5cf6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Tue, 28 Oct 2014 14:40:38 +0100
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Subject: [PATCH 158/158] MIPS: BCM47XX: Initialize bcma bus later (with mm
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available)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Initializaion with memory allocator available will be much simpler, this
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will allow cleanup in the bcma code.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
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Cc: linux-mips@linux-mips.org
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Patchwork: https://patchwork.linux-mips.org/patch/8234/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/bcm47xx/bcm47xx_private.h | 3 +++
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arch/mips/bcm47xx/irq.c | 8 ++++++++
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arch/mips/bcm47xx/setup.c | 33 +++++++++++++++++++++++++++------
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3 files changed, 38 insertions(+), 6 deletions(-)
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diff --git a/arch/mips/bcm47xx/bcm47xx_private.h b/arch/mips/bcm47xx/bcm47xx_private.h
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index 12a112d..ea909a5 100644
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--- a/arch/mips/bcm47xx/bcm47xx_private.h
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+++ b/arch/mips/bcm47xx/bcm47xx_private.h
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@@ -15,6 +15,9 @@ int __init bcm47xx_buttons_register(void);
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/* leds.c */
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void __init bcm47xx_leds_register(void);
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+/* setup.c */
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+void __init bcm47xx_bus_setup(void);
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+
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/* workarounds.c */
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void __init bcm47xx_workarounds(void);
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diff --git a/arch/mips/bcm47xx/irq.c b/arch/mips/bcm47xx/irq.c
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index e0585b7..21b4497 100644
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--- a/arch/mips/bcm47xx/irq.c
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+++ b/arch/mips/bcm47xx/irq.c
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@@ -22,6 +22,8 @@
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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+#include "bcm47xx_private.h"
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+
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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@@ -65,6 +67,12 @@ DEFINE_HWx_IRQDISPATCH(7)
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void __init arch_init_irq(void)
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{
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+ /*
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+ * This is the first arch callback after mm_init (we can use kmalloc),
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+ * so let's finish bus initialization now.
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+ */
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+ bcm47xx_bus_setup();
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+
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#ifdef CONFIG_BCM47XX_BCMA
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if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
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bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
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diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
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index 444c65a..e43b504 100644
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--- a/arch/mips/bcm47xx/setup.c
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+++ b/arch/mips/bcm47xx/setup.c
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@@ -156,15 +156,14 @@ static void __init bcm47xx_register_bcma(void)
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err = bcma_host_soc_register(&bcm47xx_bus.bcma);
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if (err)
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panic("Failed to register BCMA bus (err %d)", err);
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-
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- err = bcma_host_soc_init(&bcm47xx_bus.bcma);
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- if (err)
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- panic("Failed to initialize BCMA bus (err %d)", err);
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-
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- bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
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}
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#endif
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+/*
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+ * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
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+ * to detect memory and record it with add_memory_region.
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+ * Any extra initializaion performed here must not use kmalloc or bootmem.
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+ */
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void __init plat_mem_setup(void)
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{
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struct cpuinfo_mips *c = ¤t_cpu_data;
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@@ -193,6 +192,28 @@ void __init plat_mem_setup(void)
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_machine_restart = bcm47xx_machine_restart;
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_machine_halt = bcm47xx_machine_halt;
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pm_power_off = bcm47xx_machine_halt;
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+}
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+
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+/*
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+ * This finishes bus initialization doing things that were not possible without
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+ * kmalloc. Make sure to call it late enough (after mm_init).
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+ */
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+void __init bcm47xx_bus_setup(void)
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+{
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+#ifdef CONFIG_BCM47XX_BCMA
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+ if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
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+ int err;
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+
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+ err = bcma_host_soc_init(&bcm47xx_bus.bcma);
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+ if (err)
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+ panic("Failed to initialize BCMA bus (err %d)", err);
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+
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+ bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
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+ NULL);
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+ }
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+#endif
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+
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+ /* With bus initialized we can access NVRAM and detect the board */
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bcm47xx_board_detect();
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mips_set_machine_name(bcm47xx_board_get_name());
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}
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--
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1.8.4.5
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