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/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#define ROM_API_TABLE_BASE_ADDR_LEGACY 0x180
#define ROM_VERSION_OFFSET 0x80
#define ROM_API_HWCNFG_SETUP_OFFSET 0x08
plugin_start:
push {r0-r4, lr}
imx7_ddr_setting
imx7_clock_gating
imx7_qos_setting
/*
* Check if we are in USB serial download mode and immediately return to ROM
* Need to check USB CTRL clock firstly, then check the USBx_nASYNCLISTADDR
*/
ldr r0, =0x30384680
ldr r1, [r0]
cmp r1, #0
beq normal_boot
ldr r0, =0x30B10158
ldr r1, [r0]
cmp r1, #0
beq normal_boot
pop {r0-r4, lr}
bx lr
normal_boot:
/*
* The following is to fill in those arguments for this ROM function
* pu_irom_hwcnfg_setup(void **start, size_t *bytes, const void *boot_data)
* This function is used to copy data from the storage media into DDR.
* start - Initial (possibly partial) image load address on entry.
* Final image load address on exit.
* bytes - Initial (possibly partial) image size on entry.
* Final image size on exit.
* boot_data - Initial @ref ivt Boot Data load address.
*/
adr r0, boot_data2
adr r1, image_len2
adr r2, boot_data2
/*
* check the _pu_irom_api_table for the address
*/
before_calling_rom___pu_irom_hwcnfg_setup:
ldr r3, =ROM_VERSION_OFFSET
ldr r4, [r3]
ldr r3, =ROM_API_TABLE_BASE_ADDR_LEGACY
ldr r4, [r3, #ROM_API_HWCNFG_SETUP_OFFSET]
blx r4
after_calling_rom___pu_irom_hwcnfg_setup:
/* To return to ROM from plugin, we need to fill in these argument.
* Here is what need to do:
* Need to construct the paramters for this function before return to ROM:
* plugin_download(void **start, size_t *bytes, UINT32 *ivt_offset)
*/
pop {r0-r4, lr}
push {r5}
ldr r5, boot_data2
str r5, [r0]
ldr r5, image_len2
str r5, [r1]
ldr r5, second_ivt_offset
str r5, [r2]
mov r0, #1
pop {r5}
/* return back to ROM code */
bx lr
/* make the following data right in the end of the output*/
.ltorg
#define FLASH_OFFSET 0x400
/*
* second_ivt_offset is the offset from the "second_ivt_header" to
* "image_copy_start", which involves FLASH_OFFSET, plus the first
* ivt_header, the plugin code size itself recorded by "ivt2_header"
*/
second_ivt_offset: .long (ivt2_header + 0x2C + FLASH_OFFSET)
/*
* The following is the second IVT header plus the second boot data
*/
ivt2_header: .long 0x0
app2_code_jump_v: .long 0x0
reserv3: .long 0x0
dcd2_ptr: .long 0x0
boot_data2_ptr: .long 0x0
self_ptr2: .long 0x0
app_code_csf2: .long 0x0
reserv4: .long 0x0
boot_data2: .long 0x0
image_len2: .long 0x0
plugin2: .long 0x0
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