| /* |
| * Copyright (C) 2015 Freescale Semiconductor, Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * 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; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #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 |