diff options
| -rw-r--r-- | arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S | 93 | ||||
| -rw-r--r-- | arch/arm/mach-imx/Kconfig | 2 |
2 files changed, 94 insertions, 1 deletions
diff --git a/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S b/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S new file mode 100644 index 0000000000..bcc804b58f --- /dev/null +++ b/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2019 NXP + */ + +#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} + + imx7ulp_ddr_setting + imx7ulp_clock_gating + imx7ulp_qos_setting + +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 parameters 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 diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index ec09ef240f..b6fd1595f0 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -29,7 +29,7 @@ config IMX_BOOTAUX config USE_IMXIMG_PLUGIN bool "Use imximage plugin code" - depends on ARCH_MX7 || ARCH_MX6 + depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP help i.MX6/7 supports DCD and Plugin. Enable this configuration to use Plugin, otherwise DCD will be used. |