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linux_dsm_epyc7002/arch/arm/mach-omap2/board-generic.c
Tony Lindgren 57df538085 ARM: OMAP2+: Fix imprecise external abort caused by bogus SRAM init 
Some omaps are producing imprecise external aborts because we are
wrongly trying to init SRAM for device tree based booting. Only
omap3 is still using the legacy SRAM code, so we need to make it
omap3 specific. Otherwise we can get errors like this on at least
dm814x:

Unhandled fault: imprecise external abort (0xc06) at 0xc08b156c
...
(omap_rev) from [<c08b12e0>] (omap_sram_init+0xf8/0x3e0)
(omap_sram_init) from [<c08aca0c>] (omap_sdrc_init+0x10/0xb0)
(omap_sdrc_init) from [<c08b581c>] (pdata_quirks_init+0x18/0x44)
(pdata_quirks_init) from [<c08b5478>] (omap_generic_init+0x10/0x1c)
(omap_generic_init) from [<c08a57e0>] (customize_machine+0x1c/0x40)
(customize_machine) from [<c00098a4>] (do_one_initcall+0x80/0x1dc)
(do_one_initcall) from [<c08a2ec4>] (kernel_init_freeable+0x218/0x2e8)
(kernel_init_freeable) from [<c063a554>] (kernel_init+0x8/0xec)
(kernel_init) from [<c000f890>] (ret_from_fork+0x14/0x24)

Let's fix the issue by making sure omap_sdrc_init only gets called for
omap3. To do that, we need to have compatible "ti,omap3" in the dts
files. And let's also use "ti,omap3630" instead of "ti,omap36xx" like
we're supposed to.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-10-19 08:55:46 -07:00

332 lines
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/*
* Copyright (C) 2005 Nokia Corporation
* Author: Paul Mundt <paul.mundt@nokia.com>
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
* Modified from the original mach-omap/omap2/board-generic.c did by Paul
* to support the OMAP2+ device tree boards with an unique board file.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/io.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/irqdomain.h>
#include <asm/mach/arch.h>
#include "common.h"
static const struct of_device_id omap_dt_match_table[] __initconst = {
{ .compatible = "simple-bus", },
{ .compatible = "ti,omap-infra", },
{ }
};
static void __init omap_generic_init(void)
{
omapdss_early_init_of();
pdata_quirks_init(omap_dt_match_table);
omapdss_init_of();
}
#ifdef CONFIG_SOC_OMAP2420
static const char *const omap242x_boards_compat[] __initconst = {
"ti,omap2420",
NULL,
};
DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap242x_map_io,
.init_early = omap2420_init_early,
.init_machine = omap_generic_init,
.init_time = omap2_sync32k_timer_init,
.dt_compat = omap242x_boards_compat,
.restart = omap2xxx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_OMAP2430
static const char *const omap243x_boards_compat[] __initconst = {
"ti,omap2430",
NULL,
};
DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap243x_map_io,
.init_early = omap2430_init_early,
.init_machine = omap_generic_init,
.init_time = omap2_sync32k_timer_init,
.dt_compat = omap243x_boards_compat,
.restart = omap2xxx_restart,
MACHINE_END
#endif
#ifdef CONFIG_ARCH_OMAP3
/* Some boards need board name for legacy userspace in /proc/cpuinfo */
static const char *const n900_boards_compat[] __initconst = {
"nokia,omap3-n900",
NULL,
};
DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_sync32k_timer_init,
.dt_compat = n900_boards_compat,
.restart = omap3xxx_restart,
MACHINE_END
/* Generic omap3 boards, most boards can use these */
static const char *const omap3_boards_compat[] __initconst = {
"ti,omap3430",
"ti,omap3",
NULL,
};
DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_sync32k_timer_init,
.dt_compat = omap3_boards_compat,
.restart = omap3xxx_restart,
MACHINE_END
static const char *const omap36xx_boards_compat[] __initconst = {
"ti,omap3630",
"ti,omap36xx",
NULL,
};
DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3630_init_early,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_sync32k_timer_init,
.dt_compat = omap36xx_boards_compat,
.restart = omap3xxx_restart,
MACHINE_END
static const char *const omap3_gp_boards_compat[] __initconst = {
"ti,omap3-beagle",
"timll,omap3-devkit8000",
NULL,
};
DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3430_init_early,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_secure_sync32k_timer_init,
.dt_compat = omap3_gp_boards_compat,
.restart = omap3xxx_restart,
MACHINE_END
static const char *const am3517_boards_compat[] __initconst = {
"ti,am3517",
NULL,
};
DT_MACHINE_START(AM3517_DT, "Generic AM3517 (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = am35xx_init_early,
.init_machine = omap_generic_init,
.init_late = omap3_init_late,
.init_time = omap3_gptimer_timer_init,
.dt_compat = am3517_boards_compat,
.restart = omap3xxx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_TI81XX
static const char *const ti814x_boards_compat[] __initconst = {
"ti,dm8148",
"ti,dm814",
NULL,
};
DT_MACHINE_START(TI814X_DT, "Generic ti814x (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = ti81xx_map_io,
.init_early = ti814x_init_early,
.init_machine = omap_generic_init,
.init_late = ti81xx_init_late,
.init_time = omap3_gptimer_timer_init,
.dt_compat = ti814x_boards_compat,
.restart = ti81xx_restart,
MACHINE_END
static const char *const ti816x_boards_compat[] __initconst = {
"ti,dm8168",
"ti,dm816",
NULL,
};
DT_MACHINE_START(TI816X_DT, "Generic ti816x (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = ti81xx_map_io,
.init_early = ti816x_init_early,
.init_machine = omap_generic_init,
.init_late = ti81xx_init_late,
.init_time = omap3_gptimer_timer_init,
.dt_compat = ti816x_boards_compat,
.restart = ti81xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_AM33XX
static const char *const am33xx_boards_compat[] __initconst = {
"ti,am33xx",
NULL,
};
DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
.reserve = omap_reserve,
.map_io = am33xx_map_io,
.init_early = am33xx_init_early,
.init_machine = omap_generic_init,
.init_late = am33xx_init_late,
.init_time = omap3_gptimer_timer_init,
.dt_compat = am33xx_boards_compat,
.restart = am33xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_ARCH_OMAP4
static const char *const omap4_boards_compat[] __initconst = {
"ti,omap4460",
"ti,omap4430",
"ti,omap4",
NULL,
};
DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
.l2c_aux_val = OMAP_L2C_AUX_CTRL,
.l2c_aux_mask = 0xcf9fffff,
.l2c_write_sec = omap4_l2c310_write_sec,
.reserve = omap_reserve,
.smp = smp_ops(omap4_smp_ops),
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
.init_irq = omap_gic_of_init,
.init_machine = omap_generic_init,
.init_late = omap4430_init_late,
.init_time = omap4_local_timer_init,
.dt_compat = omap4_boards_compat,
.restart = omap44xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_OMAP5
static const char *const omap5_boards_compat[] __initconst = {
"ti,omap5432",
"ti,omap5430",
"ti,omap5",
NULL,
};
DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
.dma_zone_size = SZ_2G,
#endif
.reserve = omap_reserve,
.smp = smp_ops(omap4_smp_ops),
.map_io = omap5_map_io,
.init_early = omap5_init_early,
.init_irq = omap_gic_of_init,
.init_machine = omap_generic_init,
.init_late = omap5_init_late,
.init_time = omap5_realtime_timer_init,
.dt_compat = omap5_boards_compat,
.restart = omap44xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_AM43XX
static const char *const am43_boards_compat[] __initconst = {
"ti,am4372",
"ti,am43",
NULL,
};
DT_MACHINE_START(AM43_DT, "Generic AM43 (Flattened Device Tree)")
.l2c_aux_val = OMAP_L2C_AUX_CTRL,
.l2c_aux_mask = 0xcf9fffff,
.l2c_write_sec = omap4_l2c310_write_sec,
.map_io = am33xx_map_io,
.init_early = am43xx_init_early,
.init_late = am43xx_init_late,
.init_irq = omap_gic_of_init,
.init_machine = omap_generic_init,
.init_time = omap3_gptimer_timer_init,
.dt_compat = am43_boards_compat,
.restart = omap44xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_SOC_DRA7XX
static const char *const dra74x_boards_compat[] __initconst = {
"ti,am5728",
"ti,am5726",
"ti,dra742",
"ti,dra7",
NULL,
};
DT_MACHINE_START(DRA74X_DT, "Generic DRA74X (Flattened Device Tree)")
#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
.dma_zone_size = SZ_2G,
#endif
.reserve = omap_reserve,
.smp = smp_ops(omap4_smp_ops),
.map_io = dra7xx_map_io,
.init_early = dra7xx_init_early,
.init_late = dra7xx_init_late,
.init_irq = omap_gic_of_init,
.init_machine = omap_generic_init,
.init_time = omap5_realtime_timer_init,
.dt_compat = dra74x_boards_compat,
.restart = omap44xx_restart,
MACHINE_END
static const char *const dra72x_boards_compat[] __initconst = {
"ti,am5718",
"ti,am5716",
"ti,dra722",
NULL,
};
DT_MACHINE_START(DRA72X_DT, "Generic DRA72X (Flattened Device Tree)")
#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
.dma_zone_size = SZ_2G,
#endif
.reserve = omap_reserve,
.map_io = dra7xx_map_io,
.init_early = dra7xx_init_early,
.init_late = dra7xx_init_late,
.init_irq = omap_gic_of_init,
.init_machine = omap_generic_init,
.init_time = omap5_realtime_timer_init,
.dt_compat = dra72x_boards_compat,
.restart = omap44xx_restart,
MACHINE_END
#endif
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