Hello Community, I am new to PowerPC and I have the Freescale MPC5566EVB with me for experimenting with MPC5566. I am using CodeWarrior with PENexus Micro debugger. My aim is to develop a code for FMPLL and store it in MPC internal SRAM. Then I want to boot the device from the internal SRAM. I have two questions regarding this. 1. What is the configuration of BOOTCFG for booting from 'internal SRAM'? 2. At what address should I specify the RCHW and how will I specify it in the linker file? When I am loading the code in Internal SRAM using debugger and executing, the MCU is working properly. But I am not configuring the RCHW in the lcf file. I suspect that the debugger is itself configuring the MCU for proper operation (please correct me if I am wrong). Hence my worry is that the same code won't run when I load it in the internal Flash since it won't configure the MCU properly. Please provide your valuable comments. Thank you. --------------------------------------- Posted through http://www.EmbeddedRelated.com

RCHW for powerpc MPC5566
Started by ●January 29, 2012
Reply by ●January 30, 20122012-01-30
On 30/01/2012 01:25, matrix13 wrote:> Hello Community, > > I am new to PowerPC and I have the Freescale MPC5566EVB with me for > experimenting with MPC5566. I am using CodeWarrior with PENexus Micro > debugger. > My aim is to develop a code for FMPLL and store it in MPC internal SRAM. > Then I want to boot the device from the internal SRAM. I have two questions > regarding this. > 1. What is the configuration of BOOTCFG for booting from 'internal SRAM'? > 2. At what address should I specify the RCHW and how will I specify it in > the linker file? > > When I am loading the code in Internal SRAM using debugger and executing, > the MCU is working properly. But I am not configuring the RCHW in the lcf > file. I suspect that the debugger is itself configuring the MCU for proper > operation (please correct me if I am wrong). Hence my worry is that the > same code won't run when I load it in the internal Flash since it won't > configure the MCU properly. > > Please provide your valuable comments. Thank you. >You can't boot from internal SRAM. You can boot from internal flash, or the internal bootloader (for serial boot, CAN boot, etc., - I don't know exactly which ones the MPC5566 supports), or from external memory. But it doesn't make sense to boot from sram - there is no code in it at power-on.
