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[src/trunk]: src/sys/arch/arm/broadcom BCM2838 (RPI4) support.
details: https://anonhg.NetBSD.org/src/rev/a3651d8e7e57
branches: trunk
changeset: 459836:a3651d8e7e57
user: skrll <skrll%NetBSD.org@localhost>
date: Fri Sep 27 12:58:54 2019 +0000
description:
BCM2838 (RPI4) support.
Based on a diff from mlelstv
diffstat:
sys/arch/arm/broadcom/bcm283x_platform.c | 170 ++++++++++++++++++++++++++++++-
sys/arch/arm/broadcom/bcm283x_platform.h | 11 +-
2 files changed, 175 insertions(+), 6 deletions(-)
diffs (truncated from 327 to 300 lines):
diff -r 7fd150785909 -r a3651d8e7e57 sys/arch/arm/broadcom/bcm283x_platform.c
--- a/sys/arch/arm/broadcom/bcm283x_platform.c Fri Sep 27 11:57:42 2019 +0000
+++ b/sys/arch/arm/broadcom/bcm283x_platform.c Fri Sep 27 12:58:54 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: bcm283x_platform.c,v 1.24 2019/09/25 18:01:03 skrll Exp $ */
+/* $NetBSD: bcm283x_platform.c,v 1.25 2019/09/27 12:58:54 skrll Exp $ */
/*-
* Copyright (c) 2017 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bcm283x_platform.c,v 1.24 2019/09/25 18:01:03 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bcm283x_platform.c,v 1.25 2019/09/27 12:58:54 skrll Exp $");
#include "opt_arm_debug.h"
#include "opt_bcm283x.h"
@@ -113,6 +113,7 @@
void bcm2835_platform_early_putchar(char c);
void bcm2836_platform_early_putchar(char c);
void bcm2837_platform_early_putchar(char c);
+void bcm2838_platform_early_putchar(char c);
extern void bcmgenfb_set_console_dev(device_t dev);
void bcmgenfb_set_ioctl(int(*)(void *, void *, u_long, void *, int, struct lwp *));
@@ -129,14 +130,19 @@
bs_protos(bcm2835_a4x);
bs_protos(bcm2836);
bs_protos(bcm2836_a4x);
+bs_protos(bcm2838);
+bs_protos(bcm2838_a4x);
struct bus_space bcm2835_bs_tag;
struct bus_space bcm2835_a4x_bs_tag;
struct bus_space bcm2836_bs_tag;
struct bus_space bcm2836_a4x_bs_tag;
+struct bus_space bcm2838_bs_tag;
+struct bus_space bcm2838_a4x_bs_tag;
static paddr_t bcm2835_bus_to_phys(bus_addr_t);
static paddr_t bcm2836_bus_to_phys(bus_addr_t);
+static paddr_t bcm2838_bus_to_phys(bus_addr_t);
#ifdef VERBOSE_INIT_ARM
#define VPRINTF(...) printf(__VA_ARGS__)
@@ -172,6 +178,22 @@
return ba & ~BCM2835_BUSADDR_CACHE_MASK;
}
+static paddr_t
+bcm2838_bus_to_phys(bus_addr_t ba)
+{
+
+ /* Attempt to find the PA device mapping */
+ if (ba >= BCM283X_PERIPHERALS_BASE_BUS &&
+ ba < BCM283X_PERIPHERALS_BASE_BUS + BCM283X_PERIPHERALS_SIZE)
+ return BCM2838_PERIPHERALS_BUS_TO_PHYS(ba);
+
+ if (ba >= BCM2838_ARM_LOCAL_BASE &&
+ ba < BCM2838_ARM_LOCAL_BASE + BCM2838_ARM_LOCAL_SIZE)
+ return ba;
+
+ return ba & ~BCM2835_BUSADDR_CACHE_MASK;
+}
+
int
bcm2835_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag,
bus_space_handle_t *bshp)
@@ -220,6 +242,30 @@
return bcm2836_bs_mmap(t, ba, 4 * offset, prot, flags);
}
+int
+bcm2838_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag,
+ bus_space_handle_t *bshp)
+{
+ const paddr_t pa = bcm2838_bus_to_phys(ba);
+
+ return bus_space_map(&arm_generic_bs_tag, pa, size, flag, bshp);
+}
+
+paddr_t
+bcm2838_bs_mmap(void *t, bus_addr_t ba, off_t offset, int prot, int flags)
+{
+ const paddr_t pa = bcm2838_bus_to_phys(ba);
+
+ return bus_space_mmap(&arm_generic_bs_tag, pa, offset, prot, flags);
+}
+
+paddr_t
+bcm2838_a4x_bs_mmap(void *t, bus_addr_t ba, off_t offset, int prot, int flags)
+{
+
+ return bcm2838_bs_mmap(t, ba, 4 * offset, prot, flags);
+}
+
struct arm32_dma_range bcm2835_dma_ranges[] = {
[0] = {
.dr_sysbase = 0,
@@ -234,6 +280,13 @@
}
};
+struct arm32_dma_range bcm2838_dma_ranges[] = {
+ [0] = {
+ .dr_sysbase = 0,
+ .dr_busbase = BCM2835_BUSADDR_CACHE_DIRECT,
+ }
+};
+
#if defined(SOC_BCM2835)
static const struct pmap_devmap *
@@ -257,7 +310,6 @@
static const struct pmap_devmap devmap[] = {
DEVMAP_ENTRY(BCM2836_PERIPHERALS_VBASE, BCM2836_PERIPHERALS_BASE,
BCM283X_PERIPHERALS_SIZE), /* 16Mb */
-
DEVMAP_ENTRY(BCM2836_ARM_LOCAL_VBASE, BCM2836_ARM_LOCAL_BASE,
BCM2836_ARM_LOCAL_SIZE),
#if defined(MULTIPROCESSOR) && defined(__aarch64__)
@@ -271,6 +323,25 @@
return devmap;
}
#endif
+
+static const struct pmap_devmap *
+bcm2838_platform_devmap(void)
+{
+ static const struct pmap_devmap devmap[] = {
+ DEVMAP_ENTRY(BCM2838_PERIPHERALS_VBASE, BCM2838_PERIPHERALS_BASE,
+ BCM283X_PERIPHERALS_SIZE), /* 16Mb */
+ DEVMAP_ENTRY(BCM2838_ARM_LOCAL_VBASE, BCM2838_ARM_LOCAL_BASE,
+ BCM2838_ARM_LOCAL_SIZE),
+#if defined(MULTIPROCESSOR) && defined(__aarch64__)
+ /* for fdt cpu spin-table */
+ DEVMAP_ENTRY(BCM2836_ARM_SMP_VBASE, BCM2836_ARM_SMP_BASE,
+ BCM2836_ARM_SMP_SIZE),
+#endif
+ DEVMAP_ENTRY_END
+ };
+
+ return devmap;
+}
/*
* Macros to translate between physical and virtual for a subset of the
* kernel address space. *Not* for general use.
@@ -607,6 +678,16 @@
bcm283x_uartinit(iot, ioh);
}
+
+static void
+bcm2838_uartinit(void)
+{
+ const paddr_t pa = BCM2838_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE);
+ const bus_space_tag_t iot = &bcm2838_bs_tag;
+ const bus_space_handle_t ioh = BCM2838_IOPHYSTOVIRT(pa);
+
+ bcm283x_uartinit(iot, ioh);
+}
#endif
#define BCM283x_MINIMUM_SPLIT (128U * 1024 * 1024)
@@ -724,6 +805,16 @@
bcm283x_bootparams(iot, ioh);
}
+static void
+bcm2838_bootparams(void)
+{
+ const paddr_t pa = BCM2838_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE);
+ const bus_space_tag_t iot = &bcm2838_bs_tag;
+ const bus_space_handle_t ioh = BCM2838_IOPHYSTOVIRT(pa);
+
+ bcm283x_bootparams(iot, ioh);
+}
+
#if defined(MULTIPROCESSOR)
static int
cpu_enable_bcm2836(int phandle)
@@ -1152,6 +1243,30 @@
arm_fdt_cpu_bootstrap();
#endif
}
+
+static void
+bcm2838_platform_bootstrap(void)
+{
+
+ bcm2838_bs_tag = arm_generic_bs_tag;
+ bcm2838_a4x_bs_tag = arm_generic_a4x_bs_tag;
+
+ bcm2838_bs_tag.bs_map = bcm2838_bs_map;
+ bcm2838_bs_tag.bs_mmap = bcm2838_bs_mmap;
+ bcm2838_a4x_bs_tag.bs_map = bcm2838_bs_map;
+ bcm2838_a4x_bs_tag.bs_mmap = bcm2838_a4x_bs_mmap;
+
+ fdtbus_set_decoderegprop(false);
+
+ bcm2838_uartinit();
+
+ bcm2838_bootparams();
+
+#ifdef MULTIPROCESSOR
+ arm_cpu_max = RPI_CPU_MAX;
+ arm_fdt_cpu_bootstrap();
+#endif
+}
#endif
#if defined(SOC_BCM2835)
@@ -1182,6 +1297,19 @@
bcm2835_bus_dma_tag._nranges = __arraycount(bcm2836_dma_ranges);
bcm2836_dma_ranges[0].dr_len = bcm283x_memorysize;
}
+
+static void
+bcm2838_platform_init_attach_args(struct fdt_attach_args *faa)
+{
+
+ faa->faa_bst = &bcm2838_bs_tag;
+ faa->faa_a4x_bst = &bcm2838_a4x_bs_tag;
+ faa->faa_dmat = &bcm2835_bus_dma_tag;
+
+ bcm2835_bus_dma_tag._ranges = bcm2838_dma_ranges;
+ bcm2835_bus_dma_tag._nranges = __arraycount(bcm2838_dma_ranges);
+ bcm2838_dma_ranges[0].dr_len = bcm283x_memorysize;
+}
#endif
@@ -1220,8 +1348,6 @@
bcm283x_platform_early_putchar(va, pa, c);
}
-#define BCM283x_REF_FREQ 19200000
-
void
bcm2837_platform_early_putchar(char c)
{
@@ -1236,8 +1362,30 @@
;
uartaddr[com_data] = c;
+#undef AUCONSADDR_VA
+#undef AUCONSADDR_PA
}
+void
+bcm2838_platform_early_putchar(char c)
+{
+#define AUCONSADDR_PA BCM2838_PERIPHERALS_BUS_TO_PHYS(BCM2835_AUX_UART_BASE)
+#define AUCONSADDR_VA BCM2838_IOPHYSTOVIRT(AUCONSADDR_PA)
+ volatile uint32_t *uartaddr =
+ cpu_earlydevice_va_p() ?
+ (volatile uint32_t *)AUCONSADDR_VA :
+ (volatile uint32_t *)AUCONSADDR_PA;
+
+ while ((uartaddr[com_lsr] & LSR_TXRDY) == 0)
+ ;
+
+ uartaddr[com_data] = c;
+#undef AUCONSADDR_VA
+#undef AUCONSADDR_PA
+}
+
+#define BCM283x_REF_FREQ 19200000
+
static void
bcm283x_platform_device_register(device_t dev, void *aux)
{
@@ -1353,6 +1501,18 @@
.ap_mpstart = arm_fdt_cpu_mpstart,
};
+static const struct arm_platform bcm2838_platform = {
+ .ap_devmap = bcm2838_platform_devmap,
+ .ap_bootstrap = bcm2838_platform_bootstrap,
+ .ap_init_attach_args = bcm2838_platform_init_attach_args,
+ .ap_device_register = bcm283x_platform_device_register,
+ .ap_reset = bcm2835_system_reset,
+ .ap_delay = gtmr_delay,
+ .ap_uart_freq = bcm2837_platform_uart_freq,
+ .ap_mpstart = arm_fdt_cpu_mpstart,
+};
+
ARM_PLATFORM(bcm2836, "brcm,bcm2836", &bcm2836_platform);
ARM_PLATFORM(bcm2837, "brcm,bcm2837", &bcm2837_platform);
+ARM_PLATFORM(bcm2838, "brcm,bcm2838", &bcm2838_platform);
#endif
diff -r 7fd150785909 -r a3651d8e7e57 sys/arch/arm/broadcom/bcm283x_platform.h
--- a/sys/arch/arm/broadcom/bcm283x_platform.h Fri Sep 27 11:57:42 2019 +0000
+++ b/sys/arch/arm/broadcom/bcm283x_platform.h Fri Sep 27 12:58:54 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: bcm283x_platform.h,v 1.2 2018/09/10 11:05:12 ryo Exp $ */
+/* $NetBSD: bcm283x_platform.h,v 1.3 2019/09/27 12:58:54 skrll Exp $ */
/*-
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