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Chip starting method, chip and computer readable storage medium
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A read-only memory and chip technology, applied in the direction of program control devices, boot programs, data reset devices, etc., can solve problems such as chip startup failure, inapplicable Flash memory, changes, etc.
Inactive Publication Date: 2019-05-07
SANECHIPS TECH CO LTD
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[0004] In the prior art, the Bootrom code used when the chip starts will vary with the type of the external Flash memory; for example, both SPI Nor Flash memory and SPI Nand Flash memory can be used as memory for storing Bootrom codes, and these two types There are many manufacturers of Flash memory, and there may be differences in the same type of Flash memory manufactured by each manufacturer. These differences will cause the Bootrom code of the chip to change with the change of the Flash memory.
[0005] In this way, after the chip is manufactured, the chip's default instruction to read the Bootrom code may not be applicable to some Flash memory, resulting in chip startup failure
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no. 1 example
[0021] The first embodiment of the present invention records a chip startup method. The chip can be an SOC, a microcontroller unit (Microcontroller Unit, MCU) or other types of chips, and the chip is externally connected to a Flash memory; the embodiments of the present invention can be compatible with various In the case of a type of external Flash memory, the chip can be started.
[0022] figure 1 Is the first flowchart of the chip startup method of the embodiment of the present invention, such as figure 1 As shown, the process includes:
[0023] Step 101: When the chip is reset and the Bootrom process is entered, the instruction signal is read; the type of the Flash memory is determined based on the instruction signal.
[0024] Here, the chip can be used to store an indication signal, which is used to indicate the type of Flash memory.
[0025] In actual implementation, the form of the indication signal includes but is not limited to a clock signal, a high and low level signal, etc...
no. 2 example
[0045] On the basis of the foregoing embodiments of the present invention, the second embodiment of the present invention proposes a chip with an external Flash memory.
[0046] Figure 4 Is a schematic diagram of the structure of a chip according to an embodiment of the present invention, such as Figure 4 As shown, the chip 40 stores an indication signal for indicating the type of the external Flash memory 41 of the chip; the chip is provided with a controller 401; wherein,
[0047] The controller 401 is configured to read the instruction signal when the chip is reset and enter the read-only memory to start the Bootrom process; determine the type of the Flash memory based on the instruction signal; The read operation instruction corresponding to the type of, reads the Bootrom code from the Flash memory; and starts the chip based on the Bootrom code.
[0048] Optionally, the chip includes a pin for storing the indication signal.
[0049] Optionally, the pin is specifically used to la...
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Abstract
The embodiment of the invention provides a chip starting method, which is characterized in that a chip is externally connected with a Flash memory, and the method comprises the following steps: when the chip is reset and enters a Bootrom process, reading an indication signal; determining the type of the Flash memory based on the indication signal; on the basis of a read operation instruction corresponding to the type of the Flash memory, reading a Bootrom code from the Flash memory; and starting the chip on the basis of the Bootrom code. The embodiment of the invention further discloses a chipexternally connected with the flash Flash memory and a computer readable storage medium.
Description
Technical field [0001] The present invention relates to chip startup technology, in particular to a chip startup method, chip and computer readable storage medium. Background technique [0002] For some chips, flash memory can be used as an off-chip storage medium; for example, System on a Chip (SOC) can use Serial Peripheral Interface (Serial Peripheral Interface) Flash memory as off-chip Storage medium. [0003] In actual implementation, a read-only memory startup (Boot Read-Only Memory, Bootrom) code can be stored in the aforementioned Flash memory, and the chip can be started by reading the Bootrom code. [0004] In the prior art, the Bootrom code used when the chip is started will vary with the type of external Flash memory; for example, both SPI Nor Flash memory and SPI Nand Flash memory can be used as the memory for storing Bootrom code, and these two types There are many manufacturers of Flash memory, and the same type of Flash memory manufactured by various manufacturers m...
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