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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
74 lines
2.4 KiB
Diff
74 lines
2.4 KiB
Diff
From 51d6e1924fd0e9d075bcef61bea5a475a0ad6634 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 20 Feb 2019 08:49:39 +0000
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Subject: [PATCH] arm: bcm2835: Fix FIQ early ioremap
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The ioremapping creates mappings within the vmalloc area. The
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equivalent early function, create_mapping, now checks that the
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requested explicit virtual address is between VMALLOC_START and
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VMALLOC_END. As there is no reason to have any correlation between
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the physical and virtual addresses, put the required mappings at
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VMALLOC_START and above.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/mach-bcm/board_bcm2835.c | 21 +++++++++++++++------
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1 file changed, 15 insertions(+), 6 deletions(-)
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--- a/arch/arm/mach-bcm/board_bcm2835.c
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+++ b/arch/arm/mach-bcm/board_bcm2835.c
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@@ -14,17 +14,20 @@
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#include <linux/init.h>
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#include <linux/irqchip.h>
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+#include <linux/mm.h>
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#include <linux/of_address.h>
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#include <linux/of_fdt.h>
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#include <asm/system_info.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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+#include <asm/memory.h>
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+#include <asm/pgtable.h>
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#include "platsmp.h"
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-#define BCM2835_USB_VIRT_BASE 0xf0980000
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-#define BCM2835_USB_VIRT_MPHI 0xf0006000
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+#define BCM2835_USB_VIRT_BASE (VMALLOC_START)
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+#define BCM2835_USB_VIRT_MPHI (VMALLOC_START + 0x10000)
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static void __init bcm2835_init(void)
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{
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@@ -83,20 +86,26 @@ static int __init bcm2835_map_usb(unsign
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static void __init bcm2835_map_io(void)
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{
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- const __be32 *ranges;
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+ const __be32 *ranges, *address_cells;
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+ unsigned long root, addr_cells;
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int soc, len;
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unsigned long p2b_offset;
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debug_ll_io_init();
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+ root = of_get_flat_dt_root();
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/* Find out how to map bus to physical address first from soc/ranges */
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- soc = of_get_flat_dt_subnode_by_name(of_get_flat_dt_root(), "soc");
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+ soc = of_get_flat_dt_subnode_by_name(root, "soc");
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if (soc < 0)
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return;
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+ address_cells = of_get_flat_dt_prop(root, "#address-cells", &len);
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+ if (!address_cells || len < (sizeof(unsigned long)))
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+ return;
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+ addr_cells = be32_to_cpu(address_cells[0]);
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ranges = of_get_flat_dt_prop(soc, "ranges", &len);
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- if (!ranges || len < (sizeof(unsigned long) * 3))
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+ if (!ranges || len < (sizeof(unsigned long) * (2 + addr_cells)))
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return;
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- p2b_offset = be32_to_cpu(ranges[0]) - be32_to_cpu(ranges[1]);
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+ p2b_offset = be32_to_cpu(ranges[0]) - be32_to_cpu(ranges[addr_cells]);
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/* Now search for bcm2708-usb node in device tree */
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of_scan_flat_dt(bcm2835_map_usb, &p2b_offset);
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