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comparison src/cs/system/template/gsm_ds_motc139.template @ 0:92470e5d0b9e

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src: partial import from FC Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 01:28:16 +0000
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1 /*
2 * Integrated Protocol Stack Linker command file (all components)
3 *
4 * Target : ARM
5 *
6 * Copyright (c) Texas Instruments 2002, Condat 2002
7 *
8 * This version of the linker script template has been concocted
9 * by Spacefalcon the Outlaw, based on gsm_ds_amd8_lj3.template,
10 * in order to build the GSM firmware for the memory configuration
11 * found in the Motorola C139.
12 */
13
14 -c /* Autoinitialize variables at runtime */
15
16 /*********************************/
17 /* SPECIFY THE SYSTEM MEMORY MAP */
18 /*********************************/
19
20 MEMORY
21 {
22 /* CS0: Flash 4 Mbytes ****************************************************/
23 /* Interrupt Vectors Table */
24 I_MEM (RXI) : org = 0x00000000 len = 0x00000100
25
26 /* Boot Sector */
27 B_MEM (RXI) : org = 0x00000100 len = 0x00001f00
28
29 /* Magic Word for Calypso Boot ROM */
30 MWC_MEM (RXI) : org = 0x00002000 len = 0x00000004 fill = 0x0000001
31
32 /* Program Memory */
33 P_MEM1 (RXI) : org = 0x00010000 len = 0x00000700
34 P_MEM2 (RXI) : org = 0x00010700 len = 0x00000004
35 P_MEM3 (RXI) : org = 0x00010704 len = 0x003af8fc
36
37 /* FFS Area */
38 FFS_MEM (RX) : org = 0x003C0000 len = 0x00030000
39 /**************************************************************************/
40
41 /* CS1: External SRAM 1 Mbytes ********************************************/
42 /* Data Memory */
43
44 /*
45 *** HACK by Spacefalcon the Outlaw ***
46 *
47 * The starting Leonardo version (gsm_ds_amd8_lj3.template) had two
48 * external SRAM regions: D_MEM1 and D_MEM2. When I tried removing
49 * D_MEM2 and keeping only D_MEM1, the linker started behaving oddly
50 * in that the sections were emitted in the wrong order, and the
51 * addresses printed in the map file were bogus. The resulting m0
52 * images seemed to still work correctly, but I feel that having the
53 * linker act "correctly" is better.
54 *
55 * My current hack-solution is to split the 1 MiB physical XRAM
56 * into D_MEM1 and D_MEM2 of 512 KiB each. As it happens, the total
57 * XRAM usage of the current firmware is a little below 512 KiB anyway.
58 *
59 * Update for C139: we only have 512 KiB in total now, but we can still
60 * split the last 4 KiB off into D_MEM2.
61 */
62
63 D_MEM1 (RW) : org = 0x01000000 len = 0x0007F000
64 D_MEM2 (RW) : org = 0x0107F000 len = 0x00001000
65 /**************************************************************************/
66
67 /* CS6: Calypso Internal SRAM 256 kbytes **********************************/
68 /* Code & Variables Memory */
69 S_MEM (RXW) : org = 0x00800000 len = 0x00040000
70 /**************************************************************************/
71 }
72
73 /***********************************************/
74 /* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */
75 /***********************************************/
76
77 /*
78 * Since the bootloader directly calls the INT_Initialize() routine located
79 * in int.s, this int.s code must always be mapped at the same address
80 * (usually in the second flash sector). Its length is about 0x500 bytes.
81 * Then comes the code that need to be loaded into the internal RAM.
82 */
83
84 SECTIONS
85 {
86 .intvecs : {} > I_MEM /* Interrupt Vectors Table */
87 .monitor : > B_MEM /* Monitor Constants & Code */
88 {
89 $(CONST_BOOT_LIB)
90 }
91
92 .inttext : {} > P_MEM1 /* int.s Code */
93
94 .bss_dar : > D_MEM1 /* DAR SWE Variables */
95 {
96 $(BSS_DAR_LIB)
97 }
98
99 /*
100 * The .bss section should not be split to ensure it is initialized to 0
101 * each time the SW is reset. So the whole .bss is mapped either in D_MEM1
102 * or in D_MEM2.
103 *
104 * Falcon's note for K5A3281: see the comments above where the memory
105 * regions are defined.
106 */
107
108 .bss : > D_MEM1 | D_MEM2 /* Global & Static Variables */
109 {
110 $(BSS_BOOT_LIB)
111 }
112
113 /*
114 * All .bss sections, which must be mapped in internal RAM must be
115 * grouped in order to initialized the corresponding memory to 0.
116 * This initialization is done in int.s file before calling the Nucleus
117 * routine.
118 */
119
120 GROUP
121 {
122 S_D_Mem /* Label of start address of .bss section in Int. RAM */
123 .DintMem
124 {
125
126 /*
127 * .bss sections of the application
128 */
129
130 $(BSS_LIBS)
131
132 }
133
134 API_HISR_stack : {}
135
136 E_D_Mem /* Label of end address of .bss section in Int. RAM */
137 } > S_MEM
138
139 /*
140 * .text and .const sections which must be mapped in internal RAM.
141 */
142
143 .ldfl : {} > P_MEM2 /* Used to know the start load address */
144 GROUP load = P_MEM3, run = S_MEM
145 {
146 S_P_Mem /* Label of start address of .text & .const sections in Int. RAM */
147 .PIntMem
148 {
149 /*
150 * .text and .const sections of the application.
151 *
152 * The .veneer sections correspond exactly to .text:v&n sections
153 * implementing the veneer functions. The .text:v$n -> .veneer
154 * translation is performed by PTOOL software when PTOOL_OPTIONS
155 * environement variable is set to veneer_section.
156 */
157
158 $(CONST_LIBS)
159
160 }
161 E_P_Mem /* Label of end address of .text and .const sections in Int. RAM */
162 }
163
164 /*
165 * The rest of the code is mapped in flash, however the trampolines
166 * load address should be consistent with .text.
167 */
168 COMMENT2START
169 `trampolines load = P_MEM3, run = S_MEM
170 COMMENT2END
171
172 .text : {} > P_MEM3 /* Code */
173
174 /*
175 * The rest of the constants is mapped in flash.
176 * The .cinit section should not be split.
177 */
178
179 .cinit : {} > P_MEM3 /* Initialization Tables */
180 .const : {} > P_MEM3 /* Constant Data */
181 KadaAPI : {} > P_MEM3 /* ROMized CLDC */
182
183 .javastack: {} >> D_MEM1 | D_MEM2 /* Java stack */
184
185 .stackandheap : > D_MEM1 /* System Stacks, etc... */
186 {
187 /* Leave 20 32bit words for register pushes. */
188 . = align(8);
189 . += 20 * 4;
190
191 /* Stack for abort and/or undefined modes. */
192 exception_stack = .;
193
194 /* Leave 38 32bit words for state saving on exceptions. */
195 _xdump_buffer = .;
196 . += 38 * 4;
197 . = align(8);
198
199 /* Beginning of stacks and heap area - 2.75 kbytes (int.s) */
200 stack_segment = .;
201 . += 0xB00;
202 }
203
204 .data : {} > D_MEM1 /* Initialized Data */
205 .sysmem : {} > D_MEM1 /* Dynamic Memory Allocation Area */
206
207 }