This pull request contains Broadcom ARM-based SoC changes for 4.9, please pull

the following:
 
 - Rafal adds preliminary support for the new BCM53573 Wi-Fi SoC based on a
   single core Cortex A7 and re-using a bunch of iProc peripherals
 
 - Florian adds support for earlyprintk on Broadcom STB/CM ARM-based chips by
   reading the chip family_id value from a known location and deriving the UART
   based address
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Merge tag 'arm-soc/for-4.9/soc' of http://github.com/Broadcom/stblinux into next/soc

Pull "Broadcom soc changes for 4.9" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoC changes for 4.9, please pull
the following:

- Rafal adds preliminary support for the new BCM53573 Wi-Fi SoC based on a
  single core Cortex A7 and re-using a bunch of iProc peripherals

- Florian adds support for earlyprintk on Broadcom STB/CM ARM-based chips by
  reading the chip family_id value from a known location and deriving the UART
  based address

* tag 'arm-soc/for-4.9/soc' of http://github.com/Broadcom/stblinux:
  ARM: BCM53573: Initial support for Broadcom BCM53573 SoCs
  ARM: brcmstb: Add earlyprintk support using run-time checks
This commit is contained in:
Arnd Bergmann 2016-09-15 00:22:55 +02:00
commit ea58e97d66
5 changed files with 189 additions and 7 deletions

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@ -2574,6 +2574,13 @@ F: arch/arm/mach-bcm/bcm_5301x.c
F: arch/arm/boot/dts/bcm5301x*.dtsi
F: arch/arm/boot/dts/bcm470*
BROADCOM BCM53573 ARM ARCHITECTURE
M: Rafał Miłecki <rafal@milecki.pl>
L: linux-arm-kernel@lists.infradead.org
S: Maintained
F: arch/arm/boot/dts/bcm53573*
F: arch/arm/boot/dts/bcm47189*
BROADCOM BCM63XX ARM ARCHITECTURE
M: Florian Fainelli <f.fainelli@gmail.com>
M: bcm-kernel-feedback-list@broadcom.com

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@ -186,10 +186,11 @@ choice
config DEBUG_BRCMSTB_UART
bool "Use BRCMSTB UART for low-level debug"
depends on ARCH_BRCMSTB
select DEBUG_UART_8250
help
Say Y here if you want the debug print routines to direct
their output to the first serial port on these devices.
their output to the first serial port on these devices. The
UART physical and virtual address is automatically provided
based on the chip identification register value.
If you have a Broadcom STB chip and would like early print
messages to appear over the UART, select this option.
@ -1430,6 +1431,7 @@ config DEBUG_LL_INCLUDE
default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
default "debug/bcm63xx.S" if DEBUG_BCM63XX_UART
default "debug/digicolor.S" if DEBUG_DIGICOLOR_UA0
default "debug/brcmstb.S" if DEBUG_BRCMSTB_UART
default "mach/debug-macro.S"
# Compatibility options for PL01x
@ -1520,7 +1522,6 @@ config DEBUG_UART_PHYS
default 0xe6e60000 if DEBUG_RCAR_GEN2_SCIF0
default 0xe8008000 if DEBUG_R7S72100_SCIF2
default 0xf0000be0 if ARCH_EBSA110
default 0xf040ab00 if DEBUG_BRCMSTB_UART
default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
default 0xf7fc9000 if DEBUG_BERLIN_UART
@ -1604,7 +1605,6 @@ config DEBUG_UART_VIRT
default 0xfb009000 if DEBUG_REALVIEW_STD_PORT
default 0xfb00c000 if DEBUG_AT91_SAMA5D4_USART3
default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
default 0xfc40ab00 if DEBUG_BRCMSTB_UART
default 0xfc705000 if DEBUG_ZTE_ZX
default 0xfcfe8600 if DEBUG_BCM63XX_UART
default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
@ -1677,8 +1677,7 @@ config DEBUG_UART_8250_WORD
DEBUG_ALPINE_UART0 || \
DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
DEBUG_DAVINCI_DA8XX_UART2 || \
DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
DEBUG_BRCMSTB_UART
DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2
config DEBUG_UART_8250_PALMCHIP
bool "8250 UART is Palmchip BK-310x"
@ -1697,7 +1696,8 @@ config DEBUG_UNCOMPRESS
bool
depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
(!DEBUG_TEGRA_UART || !ZBOOT_ROM)
(!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
!DEBUG_BRCMSTB_UART
help
This option influences the normal decompressor output for
multiplatform kernels. Normally, multiplatform kernels disable

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@ -0,0 +1,145 @@
/*
* Copyright (C) 2016 Broadcom
*
* 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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/serial_reg.h>
/* Physical register offset and virtual register offset */
#define REG_PHYS_BASE 0xf0000000
#define REG_VIRT_BASE 0xfc000000
#define REG_PHYS_ADDR(x) ((x) + REG_PHYS_BASE)
/* Product id can be read from here */
#define SUN_TOP_CTRL_BASE REG_PHYS_ADDR(0x404000)
#define UARTA_3390 REG_PHYS_ADDR(0x40a900)
#define UARTA_7250 REG_PHYS_ADDR(0x40b400)
#define UARTA_7268 REG_PHYS_ADDR(0x40c000)
#define UARTA_7271 UARTA_7268
#define UARTA_7364 REG_PHYS_ADDR(0x40b000)
#define UARTA_7366 UARTA_7364
#define UARTA_74371 REG_PHYS_ADDR(0x406b00)
#define UARTA_7439 REG_PHYS_ADDR(0x40a900)
#define UARTA_7445 REG_PHYS_ADDR(0x40ab00)
#define UART_SHIFT 2
#define checkuart(rp, rv, family_id, family) \
/* Load family id */ \
ldr rp, =family_id ; \
/* Compare SUN_TOP_CTRL value against it */ \
cmp rp, rv ; \
/* Passed test, load address */ \
ldreq rp, =UARTA_##family ; \
/* Jump to save UART address */ \
beq 91f
.macro addruart, rp, rv, tmp
adr \rp, 99f @ actual addr of 99f
ldr \rv, [\rp] @ linked addr is stored there
sub \rv, \rv, \rp @ offset between the two
ldr \rp, [\rp, #4] @ linked brcmstb_uart_config
sub \tmp, \rp, \rv @ actual brcmstb_uart_config
ldr \rp, [\tmp] @ Load brcmstb_uart_config
cmp \rp, #1 @ needs initialization?
bne 100f @ no; go load the addresses
mov \rv, #0 @ yes; record init is done
str \rv, [\tmp]
/* Check SUN_TOP_CTRL base */
ldr \rp, =SUN_TOP_CTRL_BASE @ load SUN_TOP_CTRL PA
ldr \rv, [\rp, #0] @ get register contents
and \rv, \rv, #0xffffff00 @ strip revision bits [7:0]
/* Chip specific detection starts here */
20: checkuart(\rp, \rv, 0x33900000, 3390)
21: checkuart(\rp, \rv, 0x72500000, 7250)
22: checkuart(\rp, \rv, 0x72680000, 7268)
23: checkuart(\rp, \rv, 0x72710000, 7271)
24: checkuart(\rp, \rv, 0x73640000, 7364)
25: checkuart(\rp, \rv, 0x73660000, 7366)
26: checkuart(\rp, \rv, 0x07437100, 74371)
27: checkuart(\rp, \rv, 0x74390000, 7439)
28: checkuart(\rp, \rv, 0x74450000, 7445)
/* No valid UART found */
90: mov \rp, #0
/* fall through */
/* Record whichever UART we chose */
91: str \rp, [\tmp, #4] @ Store in brcmstb_uart_phys
cmp \rp, #0 @ Valid UART address?
bne 92f @ Yes, go process it
str \rp, [\tmp, #8] @ Store 0 in brcmstb_uart_virt
b 100f @ Done
92: and \rv, \rp, #0xffffff @ offset within 16MB section
add \rv, \rv, #REG_VIRT_BASE
str \rv, [\tmp, #8] @ Store in brcmstb_uart_virt
b 100f
.align
99: .word .
.word brcmstb_uart_config
.ltorg
/* Load previously selected UART address */
100: ldr \rp, [\tmp, #4] @ Load brcmstb_uart_phys
ldr \rv, [\tmp, #8] @ Load brcmstb_uart_virt
.endm
.macro store, rd, rx:vararg
str \rd, \rx
.endm
.macro load, rd, rx:vararg
ldr \rd, \rx
.endm
.macro senduart,rd,rx
store \rd, [\rx, #UART_TX << UART_SHIFT]
.endm
.macro busyuart,rd,rx
1002: load \rd, [\rx, #UART_LSR << UART_SHIFT]
and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
bne 1002b
.endm
.macro waituart,rd,rx
.endm
/*
* Storage for the state maintained by the macros above.
*
* In the kernel proper, this data is located in arch/arm/mach-bcm/brcmstb.c.
* That's because this header is included from multiple files, and we only
* want a single copy of the data. In particular, the UART probing code above
* assumes it's running using physical addresses. This is true when this file
* is included from head.o, but not when included from debug.o. So we need
* to share the probe results between the two copies, rather than having
* to re-run the probing again later.
*
* In the decompressor, we put the symbol/storage right here, since common.c
* isn't included in the decompressor build. This symbol gets put in .text
* even though it's really data, since .data is discarded from the
* decompressor. Luckily, .text is writeable in the decompressor, unless
* CONFIG_ZBOOT_ROM. That dependency is handled in arch/arm/Kconfig.debug.
*/
#if defined(ZIMAGE)
brcmstb_uart_config:
/* Debug UART initialization required */
.word 1
/* Debug UART physical address */
.word 0
/* Debug UART virtual address */
.word 0
#endif

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@ -159,6 +159,20 @@ config ARCH_BCM2835
This enables support for the Broadcom BCM2835 and BCM2836 SoCs.
This SoC is used in the Raspberry Pi and Roku 2 devices.
config ARCH_BCM_53573
bool "Broadcom BCM53573 SoC series support"
depends on ARCH_MULTI_V7
select ARCH_BCM_IPROC
select HAVE_ARM_ARCH_TIMER
help
BCM53573 series is set of SoCs using ARM Cortex-A7 CPUs with wireless
embedded in the chipset.
This SoC line is mostly used in home routers and is some cheaper
alternative for Northstar family.
The base chip is BCM53573 and there are some packaging modifications
like BCM47189 and BCM47452.
config ARCH_BCM_63XX
bool "Broadcom BCM63xx DSL SoC"
depends on ARCH_MULTI_V7

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@ -19,6 +19,22 @@
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
/*
* Storage for debug-macro.S's state.
*
* This must be in .data not .bss so that it gets initialized each time the
* kernel is loaded. The data is declared here rather than debug-macro.S so
* that multiple inclusions of debug-macro.S point at the same data.
*/
u32 brcmstb_uart_config[3] = {
/* Debug UART initialization required */
1,
/* Debug UART physical address */
0,
/* Debug UART virtual address */
0,
};
static void __init brcmstb_init_irq(void)
{
irqchip_init();