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Sansa Connect: change bootloader linker file

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This change ensures that Sansa Connect bootloader.bin will fit in its flash
partition.

Fix _flash_sizem calculation, division was not working properly because
FLASHSIZE included subtraction and defined value was not in parenthesis.
Prior to this change _flash_sizem was 0x00800000, now it is correctly set
to 4 in case of Sansa Connect and 8 in case of other TMS320DM320 players.
This significantly improves boot time as cache is now enabled only for
real flash memory region.

Change-Id: If3e50a3075c840dcb69dfafe5bba608a0acd2bf8
This commit is contained in:
Tomasz Moń 2016-05-19 20:57:20 +03:00 • committed by Gerrit Rockbox
parent 9327885d14
commit 94b23da3c4
2 changed files with 14 additions and 7 deletions
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19
firmware/target/arm/tms320dm320/boot.lds
View file

@ -34,6 +34,8 @@ STARTUP(target/arm/tms320dm320/crt0.o)
#define IRAMORIG 0x00000000
#define IRAMSIZE 0x4000
#define FLASHORIG 0x00100000
#ifdef SANSA_CONNECT
/* Offset in flash from beginning, we don't want overwrite OF bootloader
due to recovery mode and more importantly - hardware block protection.
@ -41,15 +43,18 @@ STARTUP(target/arm/tms320dm320/crt0.o)
In .srr file header add any valid memory address from following
<0x1000000; 0x1300180) u (0x131EAF4; 0x1420000) u (0x1440000; 0x5000000>
ensuring that complete bootloader fits in.
Entry point in .srr file should be 0x120010. */
#define FLASHOFFSET 0x20010
Entry point in .srr file should be equal to _loadaddress. */
#define FLASHSIZE 0x00400000
#define FLASHMEMORIG 0x00120010
/* Kernel partition is 2 M, srr header is 16 bytes, sig is 2048 bytes */
#define FLASHMEMSIZE 0x001FF7F0
#else
#define FLASHOFFSET 0
/* On targets other than Sansa Connect use whole flash for bootloader */
#define FLASHSIZE 0x00800000
#define FLASHMEMORIG FLASHORIG
#define FLASHMEMSIZE FLASHSIZE
#endif
#define FLASHORIG 0x00100000
#define FLASHSIZE 0x00800000-FLASHOFFSET
PRO_STACK_SIZE = 0x2000;
IRQ_STACK_SIZE = 0x400;
FIQ_STACK_SIZE = 0x400;
@ -61,7 +66,7 @@ MEMORY
{
DRAM : ORIGIN = DRAMORIG, LENGTH = DRAMSIZE
IRAM : ORIGIN = IRAMORIG, LENGTH = IRAMSIZE
FLASH : ORIGIN = FLASHORIG+FLASHOFFSET, LENGTH = FLASHSIZE
FLASH : ORIGIN = FLASHMEMORIG, LENGTH = FLASHMEMSIZE
}
SECTIONS

2
firmware/target/arm/tms320dm320/crt0.S
View file

@ -121,9 +121,11 @@ _start:
ldr r2, =_vectorsend
bl _copy_section
#if !defined(SANSA_CONNECT)
/* Add some delay time to make sure JTAG can be accessed cleanly */
mov r0, #0x100000
bl _delay_cycles
#endif
#if defined(BOOTLOADER)
/* Copy the DRAM */