U-Boot
ATCA-8310 Installation and Use (6806800M72D
)
170
autoload
undefined
If set to "no", DHCP will only configure the network
netretry
undefined
Either "yes" (default), "no" or "once". Defines the behaviour of failing
network commands.
pram
0
This is a decimal value encoding a memory size in kilobytes (1024
bytes). The specified amount of memory is reserved at the end of
physical memory and will not ne overwritten by u-boot. This
memory will also be retained over reset (except when the
"pmem_disable" variable is set).
The size of usable memory is reported in the variable "v_
bootm_size". If Linux shall be made aware of this memory limit,
assign the "bootm_size" variable to the value of "v_bootm_size"
before starting Linux.
The second variable encoding the memory size resulting from the
"pram" variable is "mem". This a decimal value in kilobyte (with a "k"
suffix).
clear_mem_top
undefined
If set this variable defines an address up to which memory contents
are set to zero at reset. Memory above this limit remains untouched.
The variable's value can either be a hexadecimal value (aligned to
16MB), or the string "pram".
In the latter case the limit is set according to the "pram" variable (see
above). If the "pram" variable is not defined, no memory is cleared.
pmem_disable
undefined
If set the persistent memory feature is disabled. This means that the
DDR3 memory will not be put into self-refresh mode at reset.
This makes the variables "pram" and "clear_mem_top" obsolete,
since the complete memory will be re-initialized at reset (to initialize
the ECC data).
hwconf
undefined
Can be used to configure DRAM interleaving options. See 2.1.11.
Table 6-3 Variables for Controlling the Boot Progress (continued)
Variable Name
Default
Description
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Страница 26: ...ATCA 8310 Installation and Use 6806800M72D 26 List of Figures ...
Страница 34: ...ATCA 8310 Installation and Use 6806800M72D About this Manual 34 About this Manual ...
Страница 38: ...Introduction ATCA 8310 Installation and Use 6806800M72D 38 Figure 1 1 Declaration of Conformity ...
Страница 54: ...Hardware Preparation and Installation ATCA 8310 Installation and Use 6806800M72D 54 ...
Страница 70: ...Controls Indicators and Connectors ATCA 8310 Installation and Use 6806800M72D 70 ...
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