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https://github.com/Telecominfraproject/OpenCellular.git
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b42dd73603
When a chip has special/non-contiguous SRAM physical memory region, rather than extending the generic linker file ad nauseam, define a mechanism to declare a chip specific list of those regions. To do so, a chip must declare the CONFIG_CHIP_MEMORY_REGIONS configuration and have a memory_regions.inc with the list of regions. The special-purpose preprocessed chip/<chip_name>/memory_regions.inc file has one region declaration per line using the following macro: REGION(name, attributes, start_address, size) Each region will get a proper MEMORY entry and a section in the linker file. the __SECTION(region_name) helper is provided as a convenience to declare variable in a specific region. Note: those 'special' regions are NOT cleared at startup contrary to .bss. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=b:67081508 TEST=on ZerbleBarn, along with the following CLs, run the firmware with large arrays in special AHB memory regions. Change-Id: I3f156ef6e5feb4a6a0b2ae2468bae8a20483f17c Reviewed-on: https://chromium-review.googlesource.com/946368 Commit-Ready: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Symbols from linker definitions
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*/
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#ifndef __CROS_EC_LINK_DEFS_H
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#define __CROS_EC_LINK_DEFS_H
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#include "console.h"
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#include "hooks.h"
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#include "host_command.h"
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#include "mkbp_event.h"
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#include "task.h"
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#include "test_util.h"
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/* Console commands */
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extern const struct console_command __cmds[];
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extern const struct console_command __cmds_end[];
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/* Extension commands. */
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extern const void *__extension_cmds;
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extern const void *__extension_cmds_end;
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/* Hooks */
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extern const struct hook_data __hooks_init[];
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extern const struct hook_data __hooks_init_end[];
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extern const struct hook_data __hooks_pre_freq_change[];
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extern const struct hook_data __hooks_pre_freq_change_end[];
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extern const struct hook_data __hooks_freq_change[];
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extern const struct hook_data __hooks_freq_change_end[];
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extern const struct hook_data __hooks_sysjump[];
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extern const struct hook_data __hooks_sysjump_end[];
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extern const struct hook_data __hooks_chipset_pre_init[];
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extern const struct hook_data __hooks_chipset_pre_init_end[];
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extern const struct hook_data __hooks_chipset_startup[];
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extern const struct hook_data __hooks_chipset_startup_end[];
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extern const struct hook_data __hooks_chipset_resume[];
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extern const struct hook_data __hooks_chipset_resume_end[];
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extern const struct hook_data __hooks_chipset_suspend[];
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extern const struct hook_data __hooks_chipset_suspend_end[];
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extern const struct hook_data __hooks_chipset_shutdown[];
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extern const struct hook_data __hooks_chipset_shutdown_end[];
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extern const struct hook_data __hooks_chipset_reset[];
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extern const struct hook_data __hooks_chipset_reset_end[];
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extern const struct hook_data __hooks_ac_change[];
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extern const struct hook_data __hooks_ac_change_end[];
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extern const struct hook_data __hooks_lid_change[];
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extern const struct hook_data __hooks_lid_change_end[];
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extern const struct hook_data __hooks_tablet_mode_change[];
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extern const struct hook_data __hooks_tablet_mode_change_end[];
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extern const struct hook_data __hooks_pwrbtn_change[];
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extern const struct hook_data __hooks_pwrbtn_change_end[];
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extern const struct hook_data __hooks_battery_soc_change[];
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extern const struct hook_data __hooks_battery_soc_change_end[];
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#ifdef CONFIG_CASE_CLOSED_DEBUG_V1
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extern const struct hook_data __hooks_ccd_change[];
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extern const struct hook_data __hooks_ccd_change_end[];
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#endif
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#ifdef CONFIG_USB_SUSPEND
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extern const struct hook_data __hooks_usb_change[];
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extern const struct hook_data __hooks_usb_change_end[];
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#endif
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extern const struct hook_data __hooks_tick[];
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extern const struct hook_data __hooks_tick_end[];
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extern const struct hook_data __hooks_second[];
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extern const struct hook_data __hooks_second_end[];
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/* Deferrable functions and firing times*/
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extern const struct deferred_data __deferred_funcs[];
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extern const struct deferred_data __deferred_funcs_end[];
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extern uint64_t __deferred_until[];
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extern uint64_t __deferred_until_end[];
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/* I2C fake devices for unit testing */
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extern const struct test_i2c_xfer __test_i2c_xfer[];
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extern const struct test_i2c_xfer __test_i2c_xfer_end[];
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/* Host commands */
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extern const struct host_command __hcmds[];
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extern const struct host_command __hcmds_end[];
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/* MKBP events */
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extern const struct mkbp_event_source __mkbp_evt_srcs[];
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extern const struct mkbp_event_source __mkbp_evt_srcs_end[];
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/* IRQs (interrupt handlers) */
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extern const struct irq_priority __irqprio[];
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extern const struct irq_priority __irqprio_end[];
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extern const void *__irqhandler[];
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/* Shared memory buffer. Use via shared_mem.h interface. */
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extern uint8_t __shared_mem_buf[];
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/* Image sections used by the TPM2 library */
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extern uint8_t *__bss_libtpm2_start;
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extern uint8_t *__bss_libtpm2_end;
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extern uint8_t *__data_libtpm2_start;
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extern uint8_t *__data_libtpm2_end;
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/* Image sections. */
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extern const void *__ro_end;
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extern const void *__data_start;
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extern const void *__data_end;
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/* Helper for special chip-specific memory sections */
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#ifdef CONFIG_CHIP_MEMORY_REGIONS
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#define __SECTION(name) __attribute__((section("." STRINGIFY(name) ".50_auto")))
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#else
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#define __SECTION(name)
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#endif /* CONFIG_MEMORY_REGIONS */
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#endif /* __CROS_EC_LINK_DEFS_H */
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