Commit b1e2c551 authored by Mike Frysinger's avatar Mike Frysinger

Blackfin: move section length calculation to linker script

The length of the sections is fixed at link time, so let the linker do the
calculation rather than doing it ourselves at runtime.
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 446707c9
......@@ -25,13 +25,12 @@ ulong bfin_poweron_retx;
__attribute__ ((__noreturn__))
void cpu_init_f(ulong bootflag, ulong loaded_from_ldr)
{
extern char _stext_l1;
#ifndef CONFIG_BFIN_BOOTROM_USES_EVT1
/* Build a NOP slide over the LDR jump block. Whee! */
char nops[0xC];
serial_early_puts("NOP Slide\n");
memset(nops, 0x00, sizeof(nops));
memcpy(&_stext_l1 - sizeof(nops), nops, sizeof(nops));
memcpy((void *)L1_INST_SRAM, nops, sizeof(nops));
#endif
if (!loaded_from_ldr) {
......@@ -40,10 +39,10 @@ void cpu_init_f(ulong bootflag, ulong loaded_from_ldr)
* checking at build time.
*/
serial_early_puts("L1 Relocate\n");
extern char _stext_l1, _etext_l1, _stext_l1_lma;
memcpy(&_stext_l1, &_stext_l1_lma, (&_etext_l1 - &_stext_l1));
extern char _sdata_l1, _edata_l1, _sdata_l1_lma;
memcpy(&_sdata_l1, &_sdata_l1_lma, (&_edata_l1 - &_sdata_l1));
extern char _stext_l1[], _text_l1_lma[], _text_l1_len[];
memcpy(&_stext_l1, &_text_l1_lma, (unsigned long)_text_l1_len);
extern char _sdata_l1[], _data_l1_lma[], _data_l1_len[];
memcpy(&_sdata_l1, &_data_l1_lma, (unsigned long)_data_l1_len);
}
#if defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__)
/* The BF537 bootrom will reset the EBIU_AMGCTL register on us
......
......@@ -139,11 +139,10 @@ ENTRY(_start)
.Ldma_and_reprogram:
r0.l = LO(L1_INST_SRAM);
r0.h = HI(L1_INST_SRAM);
r1.l = __initcode_start;
r1.h = __initcode_start;
r2.l = __initcode_end;
r2.h = __initcode_end;
r2 = r2 - r1; /* convert r2 into length of initcode */
r1.l = __initcode_lma;
r1.h = __initcode_lma;
r2.l = __initcode_len;
r2.h = __initcode_len;
r1 = r1 - r4; /* convert r1 from load address of initcode ... */
r1 = r1 + r5; /* ... to current (not load) address of initcode */
p3 = r0;
......@@ -173,12 +172,11 @@ ENTRY(_start)
* takes care of clearing things for us.
*/
serial_early_puts("Zero BSS");
r0.l = __bss_start;
r0.h = __bss_start;
r0.l = __bss_vma;
r0.h = __bss_vma;
r1 = 0 (x);
r2.l = __bss_end;
r2.h = __bss_end;
r2 = r2 - r0;
r2.l = __bss_len;
r2.h = __bss_len;
call _memset;
.Lnorelocate:
......
......@@ -65,16 +65,22 @@ MEMORY
ENTRY(_start)
SECTIONS
{
.text :
.text.pre :
{
cpu/blackfin/start.o (.text .text.*)
LDS_BOARD_TEXT
} >ram_code
__initcode_start = .;
.text.init :
{
cpu/blackfin/initcode.o (.text .text.*)
__initcode_end = .;
} >ram_code
__initcode_lma = LOADADDR(.text.init);
__initcode_len = SIZEOF(.text.init);
.text :
{
*(.text .text.*)
} >ram
......@@ -113,7 +119,9 @@ SECTIONS
. = ALIGN(4);
__etext_l1 = .;
} >l1_code AT>ram
__stext_l1_lma = LOADADDR(.text_l1);
__text_l1_lma = LOADADDR(.text_l1);
__text_l1_len = SIZEOF(.text_l1);
ASSERT (__text_l1_len <= L1_INST_SRAM_SIZE, "L1 text overflow!")
.data_l1 :
{
......@@ -124,16 +132,18 @@ SECTIONS
. = ALIGN(4);
__edata_l1 = .;
} >l1_data AT>ram
__sdata_l1_lma = LOADADDR(.data_l1);
__data_l1_lma = LOADADDR(.data_l1);
__data_l1_len = SIZEOF(.data_l1);
ASSERT (__data_l1_len <= L1_DATA_B_SRAM_SIZE, "L1 data B overflow!")
.bss :
{
. = ALIGN(4);
__bss_start = .;
*(.sbss) *(.scommon)
*(.dynbss)
*(.bss .bss.*)
*(COMMON)
__bss_end = .;
} >ram
__bss_vma = ADDR(.bss);
__bss_len = SIZEOF(.bss);
}
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